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Porsche IMS Bearing Replacement

If you don’t know what the IMS bearing is….then read on for sure, and check out all the write ups on the forums about the Intermediate Shaft Bearing (IMS) as well.  While many posts and articles have been written about the IMS, we wanted to make sure we also share this info with all of our customer and reader base.  This is one of those items, like the rubber timing belts on Audi motors, or the poor cooling system on BMW motors, that if not understood, could result in the complete destruction of the motor.

We just did this upgrade and replacement on a customers Porsche Boxster, 1999, and can attest to the issue and the need for the upgrade.

Most of the technical information in this write up is from LN Engineering, who developed the upgrade kit.

Pictured below is the failed IMS and the damage it did, and left alone, the whole motor would soon go with it.

What can be done to prevent an IMS failure?

There is no quick, cheap or easy fix. Like with many aircooled engines, many get torn down and rebuild BEFORE an engine failure so that engines can get upgraded. Short of a pre-emptive rebuild, the best preventative measures that can be taken are to be religious with your maintenance schedule. But keep reading, there’s more that you can do.

What can be done is to change your oil more often. We recommend oil changes for the M96 and later engines (as we do for air-cooled engines) every 5,000 miles or 6 months. If you drive short distances frequently or in cold climates, more frequent changes every 3,000 miles or 3 months is advisable.  We’re not just saying this to drive up the oil change business, as you will read below, the lubrication or lack of it to the IMS will accelerate the deterioration of the IMS bearing.

If you track your car, you should change the oil after every race weekend or every other event at the bare minimum and should also consider used oil analysis to monitor the health of your engine.

Use a higher viscosity motor oil. There are several Porsche approved oils that are 5w40, rather than Mobil 1 0w40. We also use and recommend Motul 8100 5w40, which is an excellent Porsche approved lubricant for both street and track use.

By no means should you use any oil thinner than a 0w40 – do not use 0w30, 5w30, or 10w30 viscosities! Also, use of a low SAPS oil (has less Zn and P) isn’t recommended.

Timken Falex bearing tests tend to indicate increased load capacity and less wear scarring with oils with high levels of moly as documented here and may prolong the IMS bearing life.

Also, make sure you drive your Porsche as it was intended to be driven! We like to see the revs kept above 2,500 rpm – higher rpms provide better protection than lower rpms for the IMS bearing (more on why this is so further down this page). Just make sure you’re engine’s warmed up first before putting a large load or high rpms on it!  There are also other side benefits of driving your Porsche the way it was meant to be driven…..the clogged air passages, the air/oil separator, the RMS.

On a new or remanufactured engine built in or after MY06 utilizing the revised M97 IMS, the only “preventative” measure that can be taken short of our retrofit kits is to remove the seal off the front of the IMS bearing, to allow for engine oil to lubricate the bearing. Alternatively, you can repack the bearing with a quality synthetic bearing grease and put a new seal (available from any place that sells bearings). This same technique could be applied also to MY97-05 bearings, if found to be in excellent condition, but by this point, the majority of the labor that is required to do an IMS retrofit would have already been spent, so it’s a better value to replace rather than solely inspect and reseal the IMS flange.

With proper lubrication, more frequent oil changes, and spirited driving, longevity of your original IMS can be greatly extended. The LN Engineering retrofit kits use ceramic bearings with significantly longer service life and come with seals removed for improved oiling as well.

Why do intermediate shafts fail (or rather, why do the bearings fail)?

Thanks to a fellow Porsche Boxster owner who is also a retired bearing engineer who worked for Timken Bearing, we have gained much insight towards the root causes of intermediate shaft failures. Here’s the reader’s digest version of his bearing analysis and how LN Engineering has used this information in developing its IMS solutions. By their estimates, they figure a 90% survival rate of the bearing used in the IMS at 90,000 miles* – resulting in a staggering 10% failure rate (called the Ll0 life)! *Assuming an average speed of 60mph in top gear.

There are two configurations of intermediate shafts – the major variations are in the drive, where the early have a bicycle chain style sprocket where the later is a gear type sprocket. The other differences are in the intermediate shaft bearing configurations, with three bearing configurations – an early dual row, single row, then final version, with the larger single row bearing.

Both intermediate shaft assemblies use a bearing support visible as a small stud from the exterior of the engine in the center of the IMS hub flange. This stud has a flange that centers and rests on the inboard side of the bearing and torques the inner race to the stationary IMS hub flange. The outer race is allowed to rotate which allows the IMS to rotate. A few problems stem from the support stud which is undercut for an o-ring to keep oil from leaking out of the IMS hub flange. This severely weakens the stud as it is undercut deeper than the threads by a good margin. The main problem stems from the use of a sealed bearing. Although the seals are intended to keep oil out of the IMS tube and keep the permanent lubricant in the bearing, neither happens.

On engines observant of factory recommended long drain intervals, oil heavily laden from fuel or just dirty from too long of drain intervals provides poor lubrication for the IMS bearing. Even .002% water in the oil can reduce bearing life by up to 48%. Higher moisture levels up to 6% can reduce bearing life by up to 83%. Excessive oil temperatures also have a negative effect on bearing life – the life of the permanent lubricant used in these bearings is cut in half by every 18F increase in temperature – from an uncontaminated life of up to 30 years at 86F to a useful life of only 90 days at 212F! This is why the bearing engineer recommended removing the seal and allowing the engine oil to lubricate the bearing, and why frequent changes are so important. Oils high in ZDDP and moly further improve longevity as suggested in the article referenced above. More info about ball bearings can be found here.

Now it gets more technical…. Where the exact reason for IMS failures cannot be known for sure, in the bearing analysis it was noted that bearings used in the IMS position are unusual in that they are double sealed and have outer race rotation. Bearings were found to be void of grease and had light oil in them and wear patterns in the ball grooves indicate marginal lubrication due to the relatively low viscosity of motor oil compared to grease.

In addition, conventional class 1 bearings, like the 52100-series bearing steel used in the factory bearings, is typically only stable to 250F, suffering from fatigue and weakening exposed to elevated engine temperatures that slowly affect the bearing’s strength over its lifespan. Attempting to reduce engine coolant operating temperatures directly reduces oil temperatures, further improving bearing life! That’s why trying to lower the coolant AND oil temperature is so important!

Computer simulation of the 6204 bearing showed that only three balls are under load at any given time. Hertz stress is moderate. Lube film thickness is very small. Ideally it should be greater than the worst surface finish. Speed is not high enough to develop an elastohydrodynamic film to overcome surface finish/film issue. Fatigue life is high due to relative light load but with no EHD film there will be metal/metal contact and wear. With only three balls under load at any one time the unloaded balls will be dragged around by the ball separator. When a ball leaves the loaded zone it will tend to be driven into the separator pocket.

The engineer’s initial thoughts were that the ball-separator failure led to bearing collapse, but after analysis of said IMS bearings, it would appear that bearing wear/fatigue spalls lead to separator wear and outer race failure. Separator failure and bearing collapse causes catastrophic failure of the mounting bolt(s) and IMS/timing chain components. The first recommendation was to use a bearing without seals and secondly to use a higher viscosity oil (with greater film strength). More frequent changes will also improve lubrication quality. An oil with extreme pressure additives like Moly might also further assist in increasing bearing life. Higher rpms also increases bearing life as this lessens the viscosity requirements of the lubricant to maintain EHD lubrication, also providing a reasonable explanation of the lack of IMS failures in tracked cars or those driven “like they were stolen.” Likewise, far more failures are found in engines with low mileage that are garage queens and never driven to their full potential. Further recommendations by the retired Timken engineer are evident in the design of LN Engineering’s IMS upgrade and retrofit kits.

How is the IMS Bearing lubricated?

As supplied, the original IMS bearing employed a sealed bearing and relied on a permanent lubricant (grease) to lubricate the bearing. (Similar to the sealed bearing that fails in the gearboxes found in MY97-08 5 and 6 speed manual).

The problem with a sealed bearing with a permanent lubricant is that during the life of the bearing, the seal is subjected to oil temperatures near the maximum rating for the seal, eventually degrading the seal. At this point, the seal fails to retain the permanent grease, which is washed out by the engine oil. When this happens, the little amount of oil in the bearing is not sufficient to lubricate AND cool the bearing, leading to accelerated wear.

Several solutions have been suggested from more frequent replacement of the bearing and or seal and a lubrication schedule to replenish the permanent grease.

With the LN Engineering IMS Retrofit and IMS Upgrade, they chose to use a ceramic hybrid bearing which requires less lubrication and is designed specifically for poor lubrication environments. Coupled with the lack of grease seals, the new bearing is lubricated by splash as well as submersion lubrication (depending on operating conditions). With its longer service life under these conditions, the ceramic bearing is intended to provide extended service above and beyond the original IMS bearing.

Here is the motor and the IMS before removal.  The outer cover will be removed to expose the inner bearing for the Intermediate shaft.

For this motor, this is a double row version of the bearing (which is what was used on the early motors), and special tools are required to retrieve the inner bearing and break / destroy (yes, DESTROY) the inner bearing race retainer.

Here is the first part of the tools installed to break the inner race.

The complete tool assembly in place, the force can then be applied to the bearing to extract it and break the race retainer and not damage any of the inner motor surfaces.

The bearing is now completely removed.

The bearing on the left is the original IMS, and the little thin spring retainer is what had to be broken to retrieve the bearing.  The new upgraded single row bearing on the right is not as thick, and requires a traditional circlip to be installed to retain the bearing in the proper location.

Besides the upgraded bearing, the main bolt shaft is significantly upgraded, and you can see how this bearing has no outer or inner seal to keep the motor oil from lubricating it.

In addition, since the bearing and shaft changed, LN Engineering also upgraded and changed the main cover seal to further prevent leakage.  Here you can see the new cover completely installed and ready for use.

Don’t wait till its too late……if you have an older generation water cooled motor, regardless of mileage, you are a candidate for the IMS upgrade.

BRracing – your complete Porsche service and maintenance expert.

Porsche intro’s new Boxster

Porsche has released the first photos of the long awaited next generation Boxster. Touted as the most comprehensive generational change in the mid-engined roadster’s history, the Type 981 Boxster has a longer wheelbase and a wider track, is lighter, more fuel efficient and has electromechanical steering. Sound like something else you just read about? No surprise, the 981 has

incorporated many of the technical and some of the styling features of the 991, the “new 911.” In addition to a new lightweight body, the Boxster chassis is said to have been completely revamped. There has been a redesign of the top, which now folds into place as its own cover in the fashion of the 911 cabriolet. Inside the more spacious interior there is a continuation of the Carrera GT rising-console theme.

The harder core elements of the Boxster’s evolution include changes in engine displacement for the basic model, which is reduced to 2.7 liters, but with added direct injection and a ten horsepower increase in output at 265 hp. The S, with displacement unchanged at 3.4 liters, gets five more horses for a total of 315. Both deliver their power through either the standard six-speed manual or the seven-speed PDK, the latter producing both the best acceleration and economy by Porsche’s testing. Zero to 60 times of 5.4 and 4.7 are claimed for the Boxster and the S respectively.

Again taking a page from the 991’s engineering sheet, “dynamic transmission mounts”—using technology similar to the magnetic engine mounts in the GT3 and 991—are now part of the optional Sport Chrono package, and torque vectoring with mechanical rear axle differential lock is a Boxster option for the first time.

Expected to be in dealer’s hands early this summer, base prices have increased to $49,500 for the Boxster and $60,900 for the Boxster S.

BMW Announces new model category

BMW has been bouncing between trying to be the “ultimate driving machine” and a car targeted to the mass market.  One comes out stiff, w amazing handling, but not great to go get groceries in.  The next has ride and comfort that are akin to a Lexus, and the core contingent of BMW owners wonders if BMW lost its head.  So, to address that bi-lateral modality, BMW has announced the introduction of a new segment in their car lineup that allows them to bridge the gap…stay true w the hard edged M cars (M3, M5, M6, etc), and provide a mass market car (BMW 535i).  Read below for the details from the BMW press release.

12th January 2012

M genes as standard: the BMW M Performance Automobiles.

New model category with emphasis on sporting characteristics combines exclusive engine line-up, enhanced agility, precise chassis tuning and emotional design. Driving experience defined by the development expertise of BMW M GmbH. World premiere at the International Geneva Motor Show 2012.

In spring 2012, BMW M GmbH will unveil a new product range for drivers seeking a particularly sporty driving experience, yet who also value the familiar comfort and practicality of BMW models. The BMW M Performance Automobiles offer exclusive engine variants, noticeably enhanced agility and outstanding precision on the road, plus design laced with emotional appeal. The harmonious interplay of engine output, power transfer, chassis technology and aerodynamic balance provides a captivating showcase for the familiar M genes – in day-to-day driving and beyond. The BMW M Performance Automobiles will be presented to the global public for the first time at the International Geneva Motor Show 2012 which takes place from 8-18 March.

The BMW M Performance Automobiles represent a totally new model category none of its rivals can offer. Only the high-performance sports cars from BMW M GmbH provide a more convincing execution of an overall concept focused on inspirational driving dynamics. “We are targeting our efforts at customers looking for more emotionality and more performance, but who don’t want to forgo the everyday usability of their cars,” said Dr. Friedrich Nitschke, President of BMW M GmbH. Nitschke announced plans for further additions to the new product line-up, referring to “a range including a wide variety of model series, as well as both petrol and diese-engined variants”. The intelligent all-wheel-drive system BMW xDrive would also play a significant role in the BMW M Performance Automobiles, he added.

2011 will go down as one of the most successful years for BMW M GmbH since the company was founded. In addition to the BMW 1 Series M Coupe, which marked BMW M GmbH’s first ever foray into the premium compact segment, last year also saw the successful introduction of the new BMW M5. The imminent arrival of the BMW M Performance Automobiles provides 2012 – which will also feature the world premiere of the new BMW M6, among others – with an early highlight.

“The BMW M Performance Automobiles benefit from the full expertise of BMW M GmbH,” explained Nitschke. The BMW Group subsidiary can call on decades of motor sport experience when it comes to translating outstanding engine power into excellent dynamics. This development expertise also imbues the BMW M Performance Automobiles with their distinctive character.

The models in the new product category follow in the tyre tracks of the BMW M535i, which was unveiled in 1980 and went on to capture the hearts of performance-minded customers with its extra power, precisely tuned chassis technology and subtly modified design. A fresh addition to the BMW 5 Series ranks, the Sedan remained a highly successful member of the line-up through two model generations and – up to 1987 – with the BMW M5 for company within the range. “Our aim with the BMW M Performance Automobiles is to continue this tradition,” confirmed Nitschke.

BRracing – 2012 Track Events Schedule

We had expected last year to be a growing year for track events…but we had no clue it would get to the high rate of activity it did near the end of the year in 2011.  We were almost at the track every week.

So, to say that this year will be unlike any other year in our history would be redundant, but it will be just that.  Isn’t that GREAT!  The number of customers we have participating with us just continues to grow and grow.  We did a large number of events in 2011,  but 2012 will see us expand into more diverse and even farther away events and locations (we already have a tentative set of dates for Montreal and Toronto to participate in the support events for the Canadian F1 race, thank goodness we don’t award frequent miles driven awards).  We also have a contingent of customers who continue to move up in their driving experience, and are looking for more serious forms of participation, so we are adding those type events to the schedule for 2012…..but all of it is for FUN.

Here is a quick snapshot of the outlook for 2012.  In 2011, we were able to do a fair number of events at Laguna Seca still, but Laguna continues to crack down on sound, further restricting the number of events that clubs and driving groups can use the track in 2012.  So we have to alter our track and event focus again for 2012.  On the other side, Hooked On Driving has secured a weekend date at Miller Motorsport Park in Utah again, and we already have customers who have committed to returning to this great venue….this is a world class location,….this is one of the biggest and most technical tracks in all of North America….Woo Hoo, we will be there.  Infineon has made more club dates available, so there will be more events there than last year, but we will also be going father distances to try more new tracks and events (like Fontana, Spring Mountain, Buttonwillow, Willow Springs).

Due to the number of events, and the growth of our shop and core service business, 2012 will see us focus more of our event activity to those available on weekend events rather than one day events during the week.  The logistics of transporting all our customers cars along with all the supplies, tires, wheels (heck, we now have 56 wheels that we are managing for customers track cars) has made going to an event an event in and of itself.  But make no mistake….we love the activity and will grow in 2012 to support even more.

We will also be stepping up the performance event participation, and have set the goal for ourselves of taking the title of top Time Trialer in the POC group for 2012, both at individual events, and for the whole year.  Based on our results at the end of 2011, we think we can do it, but it may be our own customers who challenge us the most.

Finally, as part of our overall business development, in 2011 we continued our staff participation as dedicated crew members of the GMG American Le Mans team, and we will be expanding our participation and experience at the pro level in 2012.

Come out and join us at any and all levels, and if the initial interest and inquiries from our customers about 2012 is any indication, this will be a very busy year.   The schedule below will be under a constant state of change, so check back all the time, and if you are interested in an event and don’t see it detailed below, and desire our participation, please reach out to us so we can discuss the opportunity.  I’m sure we will find a way to make more dates work.

February 11-12, 2012                Sat/Sunday                                    Willow Springs             Porsche Owners Club

February 17, 2012                    Friday only                                      Thunderhill                   PCA GGR

February 18, 2012                    Saturday only                                  Thunderhill                  Hooked On Driving

March 10 – 11, 2012                 Sat/Sunday                                      Infineon                         Porsche Racing Club (PRC)

March 17 – 18, 2012                Sat/Sunday                                      Thunderhill                   Hooked On Driving

March 23 – 25, 2012               Fri/Sat/Sunday                              Thunderhill                    PCA GGR

March 30 – April 1, 2012       Sat/Sunday                                       Buttonwillow                AROSC

April 21 – 22, 2012                  Sat/Sunday                                       Willow Springs            Porsche Owners Club

April 28 – 29, 2012                Fri/Sat/Sunday                                 Infineon                        Ferrari Challenge

May 26 – 27, 2012                 Sat/ Sunday                                       Buttonwillow                PCA GGR

June 1 – 3, 2012                      Fri/Sat/Sunday                                 Fontana                         Porsche Owners Club

June 9 – 10, 2012                  Sat/Sunday                                         Thunderhill                  Hooked On Driving

June 16 – 17, 2012                 Sat/Sunday                                         Infineon                        Porsche Racing Club (PRC)

July 14 – 15, 2012                  Sat/Sunday                                         Thunderhill                  PCA GGR

July 21 – 22, 2012                 Sat/Sunday                                         Miller                             Hooked On Driving

August 24 – 26, 2012             Fri/Sat/Sunday                                 Laguna                          Porsche Owners Club

Sept 8 – 9, 2012                    Sat/Sunday                                          Thunderhill                  PCA GGR

Sept 22 – 23, 2012                 Sat/Sunday                                         Thunderhill                 Hooked On Driving

Sept 29 – 30, 2012                 Sat/Sunday                                         Fontana                        Porsche Owners Club

Oct 13 – 14, 2012                   Sat/Sunday                                         Fontana                        Porsche Owners Club

Oct 27 – 28, 2012                  Sat/Sunday                                         Infineon                       Porsche Owners Club & PRC

Dec 1-2, 2012                         Sat/Sunday                                        Willow Springs           Porsche Owners Club

 

Competition events (to participate in, or to also attend as fans)

April 13  14, 2012                 Weekend                                             Long Beach                    American Le Mans

May 10 – 12, 2012                Weekend                                             Laguna Seca                  American Le Mans

Sept 7 – 9, 2012                   Weekend                                             Laguna Seca                  Rolex Grand-Am Series (ASTsponsor of series)

Sept 21 – 23, 2012              Weekend                                             Infineon                         FIA World Touring Car

 

Let us know if you have other events that you want to attend and or need track support.

Porsche Club Racing Championship announced

January 8, 2012

PCA Club Racing announces a National Championship Point Series for 2012 and welcomes our series sponsor
PCA is about to enter a new frontier with the Club Racing program – a National Championship Points Series! In addition, Jackson Motorsports Group and Michelin will be sponsoring the featured program within PCA Club Racing. The purpose of a PCA National Championship Points System is to determine a National Champion and a subsequent finishing order in each class for each calendar year, as well as a Zone Champion for each PCA Zone.
Michelin Competition tires will be the specified tire for PCA Club Racing’s GTC-3, GTC-4 and GTC-5 classes which are made up of 996 and 997 Porsche Cup Cars in an “as delivered from the factory” form. Jackson Motorsports Group and Michelin’s support of PCA’s National Championship series brings a new level of competition and visibility to PCA’s already strong Club Racing program. Working with JMG and Michelin gives PCA Club Racing a strong support system and a proven high quality race tire to help provide a championship series which will be the ultimate in safe, fun and competitive racing.
Michelin has been a longtime supporter of PCA’s club racing program and their recent commitment to be the points series sponsor further illustrates how they intend to be beside PCA as we take our program to the next level. PCA Club Racing is delighted to be involved with JMG and Michelin and looks forward to a strong and lasting mutually beneficial partnership.
“The recent Club Racing partnership between Jackson Motorsports Group and PCA is the result of years of hard work, proven successes and PCA’s belief in our capabilities,” said Matt Caldwell, executive director, Account Service, Jackson Motorsports Group. “Jackson Motorsports Group is excited to partner with the PCA Club Racing GTC-3, GTC-4 and GTC-5 National Points Championship and provide the spec tires that will enable Porsches to truly thrive in their element.”

StopTech releases new brake fluid

If you have been reading our other blog posts, you know we have seen quite a bit of change in the brake fluid area…..which is not normal.  There used to be just a couple of alternatives out there.  Now, we are seeing all sorts of options, and the value proposition and pricing are getting refined….which means competition, which then means better priced solutions for our customers.

To make the evaluation simple, we see three key features to define the product positioning for brake fluid.

The fluid boiling point (moisture content), the compressibility (which can be related to the boiling point), and the price.

The new StopTech fluid is positioned to be a better alternative to the products from MOTUL (RBF600 and RBF660) and ATE, and the specs bear this out, and the pricing makes this a GREAT option.  The product is available now, and we will have some in stock shortly.

Here are the details on the new products -

StopTech Racing STR-600 & 660 High Performance Brake Fluid
Like all StopTech products, StopTech High Performance Brake Fluid is carefully designed to give drivers an edge in the punishing world of high performance motoring. For over a decade StopTech has engineered and delivered race- and championship-winning brake components and systems for high performance street driving as well as pure racing. StopTech High Performance Brake Fluid adds a new dimension to the company’s offerings.

Available in STR-600 and STR-660 formulations for high performance street and racing applications respectively, the new StopTech High Performance Brake Fluid is a DOT 4 motor vehicle brake fluid, engineered to optimize brake system performance at high operating temperatures. In addition to guarding against boiling and subsequent loss of efficiency at severe racing temperatures, StopTech Brake Fluid maintains its excellent viscosity, lubricity and non-compressibility.

StopTech Racing Brake Fluid stands out not just for its exceptional performance, but also its stylish and functional packaging. StopTech Brake Fluid comes bottled in a special metal container that is not only more durable, but also gives the fluid up to 25 percent longer shelf life than typical plastic bottles provide. both in looks and performance, StopTech Brake Fluid stands out from the crowd.

StopTech High Performance Brake Fluid conforms to and exceeds the current specification of U.S. FMVSS 116 (§ 571.116) DOT 4, is road legal, and compatible with modern ABS and other vehicle dynamic control systems. StopTech brake fluid is mixable with all DOT 3 and 4 products but should not be used in vehicles with mineral oil systems.

StopTech STR-600 High Performance Street Brake Fluid (Part No. CHM501.00001)
• Typical Dry Boiling Point 5940F (3120C). 
• Typical Wet Boiling Point 4040F (2060C).
• Minimum Wet Boiling Point 3830F (1950C).
• Metal container gives fluid a 25% longer shelf life.

StopTech STR-660 Ultra Performance Race Brake Fluid (Part No. CHM501.00002)
• Typical Dry Boiling Point 6220F (3280C). 
• Typical Wet Boiling Point 4040F (2060C).
• Minimum Wet Boiling Point 3830F (1950C).
• Metal container gives fluid a 25% longer shelf life.

To give a complete view of the world, here is how we see them stacking up and the specs -

ATE Super Gold -

- Dry Boiling Point: 280 degrees C (536 degrees F)
- Wet Boiling Point: 198 degrees C (388 degrees F)

ATE Super Blue -

- Dry Boiling Point: 280 degrees C (536 degrees F)
- Wet Boiling Point: 198 degrees C (388 degrees F)

Motul RBF600

- Dry Boiling Point: 312 degrees C (594 degrees F)
- Wet Boiling Point: 216 degrees C (421 degrees F)

Motul RBF660

- Dry Boiling Point: 325 degrees C (617 degrees F)
- Wet Boiling Point: 204 degrees C (399 degrees F)

Endless RF650

- Dry boiling point: 323 degrees C (613 degrees F)

- Wet boiling point: 218 degrees C (424 degrees F)

- Freezing point: – 40 degrees C (- 40 degrees F)

Castrol SRF

- Dry Boiling Point: 310 degrees C (590 degrees F)
- Wet Boiling Point: 270 degrees C (518 degrees F)

StopTech STR600

- Dry Boiling Point: 312 degrees C (5940F)
- Wet Boiling Point : 206 degrees C (4040F )

StopTech STR660

- Dry Boiling Point : 328 degrees C (6220F)
- Wet Boiling Point : 206 degrees C (4040F)

Now that you are armed w the specs, here is how the pricing stacks up – (this is not exact, but gives you and idea….and these are not just good prices, but the BEST prices as provided by the BRR online store….shop and compare, you will find we offer the best prices on the net plus superior knowledge and support)

ATE Super Gold = $12 a bottle

ATE Super Blue = $12 a bottle

StopTech STR600 = $17 a bottle (half liter)

Motul RBF600 = $17 a bottle (half liter)

StopTech STR660 = $27 a bottle (half liter)

Motul RBF660 = $29 a bottle (half liter)

Castrol SRF = $72 a bottle (liter bottle)

Endless RF650 = $40 a bottle (half liter)

 

OUR VIEW -

If you a “do it yourself” person, and are looking for a better fluid (DOT 4 or DOT 4+)…..then chose the new StopTech STR600.  If you own a Porsche or Audi or Mercedes….then choose this over the Motul.  If you own a BMW, then use this versus the ATE (ps, do NOT use the ATE Blue in Porsche or Audi cars…we have seen long term issues w the brake and clutch system seals).

If you are a performance oriented car user, and you drive aggressively, and want a fluid that will outperform almost all others, and you do either autocross or track days, then choose the StopTech STR660.

If you do lots of track days, or have a race car, or are looking for the best fluid and the best value in the best fluid, then pick the Endless fluid…hands down.  This is the best fluid there is without question.   We had an issue recently again w an ALFA Milano full race car, upgraded to the new fluid at the track, and presto….problems solved.

BRracing….providing the best solutions at the best price.

Vorsteiner BMW F10 products released

The new BMW cars being released are being called some of the best designed cars from BMW in over a decade.  Many are receiving awards, and even the BMW 1M recently received the “Car of the Year” award.  So, the question for aftermarket parts designers, is how do you make the great car even better?

We have seen the design results from Vorsteiner for years now, and almost all their products truly enhance the overall look and feel, and even the function of the car.  With the new BMW F10 5 Series, this was a tall demand.  But the new products from Vorsteiner sure do make a great car even better.

Here are the details on the new products.  They are available now, and can even be ordered from our website (BRR online store).

Check these out -

VMS Front Spoiler
The newly designed VMS front spoiler has been specifically designed to fit F10 5 series vehicles with the optional M Tech package. The front spoiler not only creates a purposeful and functional balance to the front end but is also unmistakably beautiful and precise.


VMS Rear Spoiler
The VMS rear add on carbon deck lid spoiler balances the additional down force created from the new front end and also elegantly extends the tail of the factory boot lid to distinguish the vehicle from other standard production cars. The VMS rear deck lid spoiler is compatible with all standard F10 5 series with our signature pre-preg autoclave construction and automotive clear lacquer finishing.


Rear Diffuser
The VMS high temperature resistant carbon pre-preg rear diffuser replaces the factory plastic unit and precisely clips into all the original rear bumper mounting point with ease. The design of this rear diffuser draws roots from our GTS-V track line with its signature upper splitter elements with it sporty centrally located aero fins that frames our new quad sports exhaust system.

BRracing – producing the best overall solutions for your car.

BUY online from our store here -

BRracing ONLINE store

Mini Cooper S R56 – engine woes

SERVICE Alert

If you own, or know someone who owns a MINI Cooper S (R56) car, from 2006.5 to 2011, read on with great interest or concern.

With the push to get more new cars produced, broaden the product line, the life cycle has gotten shorter and shorter, and manufacturers have also taken other steps to outsource some major parts of the car to help in the rush to get this all done.  Add in the change in technology, push for greater gas mileage and more power, hybrids, and there is a certain formula that something along the way may not go according to plan.  We have seen this with many of the manufacturers…it doesn’t seem limited to any category or segment.  Now enter MINI…and with the introduction of the second version of the second generation MINI, they have fallen in this hole.  They outsourced the first MINI motor for the Cooper and Cooper S, and now have taken that same path again with the current version of the MINI, albeit with now a different engine supplier and having moved from a first version Supercharged motor to the current version Turbocharged model.

None of that would be bad….unless something could go wrong.  Most of our customers today believe their car should run nearly trouble free, and not have any significant engine issues till the car nears 200k miles.  Some of that is forgiven if the car is a specialty or high performance car (read Porsche and Ferrari).

The other concern is when the manufacturer tries to turn their head the other way when an obvious, and recurrent problem pops up.  This is what we are seeing w the current model MINI Cooper S, the one with the turbocharged motor.  Due to the size of our MINI customer base, we first started to see this issue about 2010, and now are seeing a more steady stream of occurrences.  As one would expect, MINI themselves first saw the issue arise, and after a full year of issues, had issued a Technical Service Bulletin….first to its dealers, and then to the public.  But, this doesn’t mean the were stating they knew there was a problem, a Service Bulletin is to make service managers and technicians aware of how to test and repair a known issue.  That is how MINI positioned it, and continues to do so.  Their first Service bulletin even took a more backhanded approach as it communicated the issue to the dealer network.

The issue – as low as 20k miles, and we have seen it mostly around 50k miles, the motor starts to make loud rattle.  This noise is louder on cold start up, and is less noisy or may sound like a normal engine sound once the engine is fully warm.  The issue is the chain tensioner….and it is not working as designed, and not producing the tension the timing chain needs, and the timing chain hits the outer enclosure and makes the rattle sound.  But, that in and of itself wouldn’t be too bad, but what can happen if this is not taken care of is.  If the customer doesn’t have this addressed, and this tensioner continues to get worse, and the wear occurs to the timing chain guides as well, the customer could experience complete engine failure (the chain will jump the timing chain gears, timing will get off, motor won’ t run well, valves open at the wrong time, and then really bad things happen as the pistons and valves do direct battle, with the engine losing)…read the motor will break.

There is a known fix to this, and MINI even has a test to determine if the tensioner is producing less than desired tension.  Depending on when this issue is identified, and the longevity of the wear period, the extent of the fix can be minor or major.  At a minimum, it requires a new timing chain tensioner (not a quick fix, but not out of the ball park in cost either).  But, if the wear is greater, then several parts need to be replaced (timing chain, timing chain tensioner, gear, guides (3), and some key bolts).

If your car or someone you know has this, and the car is under warranty, MINI will test the car, and should cover the repair.  If you are outside the warranty period, then even though MINI knows of this, the repair will not be covered.

The current TSB related to this issue is:

SI M11 02 07
Engine – February 2011
Technical Service

This Service Information bulletin supersedes SI M11 02 07 dated October 2010.

So, be aware, listen to your motor, and you may want to have MINI test your car to see that all is OK.

McLaren MP4-12C – customer review

We often read the various magazine reviews about the new sports cars and exotics, and really wonder if they are going to be all that the reviews say they are.  Often, they are not, and reality is much different…..which you don’t know till much later.

One of the new cars, exotics, that has been highly acclaimed and heralded is the entry of the new McLaren MP4-12C.  When you read the specs, you just stand in awe, and we all know what McLaren can do….but is this street exotic truly great?

One of our customers recently had the opportunity to truly do a full test drive of the car in the Bay Area, and has shared with us their findings….read on to see what this new car is like for a daily driver here in the Bay Area.

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This great write up was penned by April (BRracing customer)….a great write up indeed -

The local dealer was kind enough to extend an invitation to test drive the new MP4-12C, so I drove our Ferrari 458 Italia the 15 miles to the McLaren dealer.

Upon arrival, the salesperson conducted me to a demo car that he indicated was loaded with every option except carbon brakes and the louder inconel exhaust system. Lots of carbon trim inside, in the engine bay, and even on the exposed from wheel tubs when the door opened, super-light wheels, etc. There is no telling how a base model would have changed my perceptions.

Opening the door of the MP4-12C was interesting with the proximity sensor switch under the character line. There is no pad or button – just smooth paint. (Makes me wonder what will happen when the battery goes dead) The angle of the semi-gull wing door as it swung wide was a logistical concern from the standpoint of garage clearance. You’d be hard pressed to fit it under a 2 post lift or very close to another car needing some door room. I put my feet into the narrow pedal box and then slid my bottom over the wide sill. There doesn’t appear to be any way to gracefully enter the car, and numerous scuffs on the leather of the lower outside dash suggested that people’s shoes had not cleared the leather there. In some ways shades of the Lotus Evora. The door was a bit hard to pull down for a smaller person like myself, due to the angle and resistance from the strut, but not impossibly so. It required a firm heave to latch however. No clunks, rattles or other unwanted sounds.

Power seats were adjustable either while the car was running, or when the door was open. But not when the car was turned off and door closed.

While most folks might remark on the climate control switches on the doors, I wished the seat controls were placed in a slightly more ergonomic location. They were under the edge of the front of the seat next to the tunnel, so you needed to lean forward to adjust. That all highlights how tight space is inside the car. It’s MUCH smaller than the 458. Not much space behind the seats, no door pockets, etc. The center stack is very narrow, with only a small sprinkling of buttons, the doors loom close, and even the seats are narrow. The dash is somewhat if not hugely lower than the 458, and the side mirrors are at least as informative as the 458, but views out of the rear are perhaps even more restrictive. Both feature a nice view of the front fender arches.

Something extremely distracting were the vertical ripples in the windshield. Looking across at a angle made them quite evident.

Once in place, I noted the seats were more snug than the 458. A good thing for smaller humans, but it might prove a challenge for larger folks. Not sure how larger seats might fit if available since the wide sills and fat doors take up a lot of width. However, the ones in the car allowed me to find a comfortable position quickly – rare in my case. I didn’t play with the stereo or center stack. News on McLaren forums have suggested that the I.R.I.S. (touch screen interface) system is still in gestation, with only the radio and media player functioning, while missing the track data, nav, and phone system. Claims were that the factory had delayed release of the car in part due to this.

I inserted the key into the column and pushed the unremarkable silver (the Ferrari one is bright red) ‘start’ button on the center stack produced a mild roar, then the engine settled into a grumble. Not quite as refined at tickover as the new 458, but not exactly rorty.

Upon setting out, what was immediately obvious was the smoothness of the ride in normal mode. It was amazing. Stuff that had us jiggling in the 458 even on the “bumpy road suspension setting” were glossed over nearly as well as the Maserati GT-S in the baby Mac! The Maser is a long wheel base car that does a marvelous job of soaking up vibrations while being sporty. Stunning job by McLaren. Moving into sport mode had us riding in comfort similar to the Ferrari’s regular street “sport” mode. Track mode in the McLaren was very harsh and really meant for track. It would be hard to find traction on our cratered streets in that mode.

A nice touch was that there were two small dials on the center stack that allowed you to control suspension and engine/drivetrain independently. Just 3 positions for each. ‘Standard’, ‘sport’, and ‘track’. So engine noise and shift firmness were controlled separately from the ride. Very simple one the surface (although you can go into the menus and adjust the levels for each setting). The dash display showed the status of all with a simple bar graph. The shifter paddles followed normal convention of right for upshift and left for downshift, although requiring a firmer tug than most other paddle shifts I’ve used. Alas the shifter paddles rotate with the steering wheel and they are quite small. Fine on the track where the wheel never turns far, nor would you want to shift in a corner, but annoying for the street. I foresee larger fixed paddles in the future. Neutral could only be selected by hitting a button in the center stack, not by pulling back both paddles simultaneously as in Ferrari or Lamborghinis. This is just a personal quibble, but I like to pop the car into neutral a short distance before stopping for a light, so that the dual clutch transmission can complete it’s downshifts a bit more smoothly, while disengaged from the rest of the drivetrain.

Shift quality in ‘normal mode” with the dual clutch gearbox was about on par with other such systems offered by Porsche, Audi, BMW, and Ferrari. Acceptable, but not as smooth as a good stickshift driver. It works best during continuous acceleration, not mixed throttle states. And like all systems, it’s possible to ‘outsmart’ the gearbox by choosing a gear it was not expecting you to choose, causing a lurch and clunk. In the middle ‘sport’ mode, the shift quality was very firm – just shy of harsh. Almost, but not quite as violent as say a Ferrari Challenge Stradale in street mode, or a Lamborghini Gallardo in ‘corsa’. In ‘race’ is was easily as abrupt as the CS in ‘race’ mode. Please note I never did try the ‘auto’ mode, since I never drive paddle cars in that mode.

The MP4-12C does creep forward when you release the brake from a halt. The 458 stays in place until you touch the throttle.

The steering wheel was markedly smaller than the 458, and lacking many of the steering located controls. That said, feedback was MUCH more natural than the 458 for a first time user. There was none of the sometimes odd kingpin angle sensation you get in the 458 just off center. Assist was very linear. This was actually aspect I liked best about the McLaren.

The steel brakes felt like they had weak initial bite (panic!), but turned out to be incredibly easy to modulate at low speeds when compared to the carbon brakes of the 458. No lurching stops! No idea how the optional carbon stoppers would feel, but unless spending a lot of time at the track, the steel disks might be the more civilized choice. I didn’t have much chance to explore high speed braking as I didn’t break the ton, but everything seemed very linear. Given the forced induction nature, engine braking was respectable, if not exactly fierce as in the 458.

Finally we arrived at the engine. Not especially refined at idle when compared to the 458, but still rather remarkable given that sports exotics of not very long ago spluttered, splatted, and were generally not very happy at low rpms. It pulled briskly from idle, but predictably once the tach swung past 3000 rms, things woke up really really quickly thanks to the twin turbos! There was an odd almost infinitesimal pause as the tach swung past 3000 rpms – maybe an intake tract runner switching over for the extra demands of the turbos? Easily as quick as the 458 in gear, even if the delivery was quite different. In the 458 you downshift to gain revs to make power. In the Mac, you just give the turbos a moment to build boost. Each happens in nearly the same space of time, but clearly the driving style needs to be adjusted.

The sound was a massive let-down for me. Mechanical, but maybe not in the best way possible. Different in note, but similar to the Porsche 997 turbo. Purposeful might be the best way to describe it. It has a hard thrummy aspect I did not especially care for coming from years of Italian car ownership. The dial on the stack could be switched to open a tube from the engine bay to the cabin (outside noise doesn’t change), which made things much louder, but in either case it’s not my idea of a perfect engine note. This might be a case where McLaren needs to suck up and do something like the new turbo M5 – create an artificial soundtrack of how the car would sound under ideal situations and then play it back via the trunk mounted stereo system whenever the car is switched on as a kind of backup singer to the real sound.

Since the car was new to me and I didn’t own it, I didn’t even begin to probe the boundaries. However, at sane speeds, it was at once a more comfortable car to drive, and despite the purposefully minimalist appointed interior surroundings, a less special car to inhabit. There is no telling whether with more practice (at higher speeds) one would continue to explore nuances of character that were not immediately evident, or whether it has a single character. That said, it was clearly a very focussed car, if not exactly passionate. More of an ultimate Nissan GT-R?

The salesperson suggested the McLaren was all about producing the quickest numbers, and not about show-boating, thus it’s understated demeanor when compared to the Italians. Let’s face it, most of us aren’t professional race car drivers, able to wring the last ounce of performance out of a car. Thus so long as the numbers are similar, it all comes down to personal preference and “feel”. There is no wrong choice at this level. There will always be a faster car in the future, so numbers aren’t everything.

I came back from the 25 minute test drive (we had to cut it short) thinking that at “normal speeds” if offered in stickshift, I would probably pick the McLaren over a stickshift 458 for a daily. Alas that is not destined to be be offered in either car. It feels more civilized and exploitable at lower speeds. That might change upon exposure to more speed and familiarity. Just because the McLaren felt friendlier upon first acquaintance does not mean it’s a great car in the long run. Great cars often require more seat time to recognize the nuances of how special they are. Initially they often terrify you. ;)

However, neither is my ideal car by any stretch, as wonderful as they might be. They don’t make my nerve endings “fizz” long after the test drive is over, so please take my review with a grain of salt. McLaren dealers are being fairly open handed with test drives at the moment, so I suggest you form your own conclusions.

And let’s not forget that this is version 1.0. Who knows what surprises lay in store? Word is that several owners have sold/had their cars bought back due to numerous software and safety updates. You can follow the online McLaren community here: http://www.mclarenlife.com/forums/mclaren-mp4-12c-p11/

Online brochure: http://www.millermotorcars.com/contentimages/media/9f4a24ecfdf86199fff382000a39b114.pdf

Note: The MP4-12C does not offer a nose lift option. The 458 sits taller, but the nose juts out further. Overall clearance is likely similar, which while not great, is workable in most instances. Ferrari however does offer a nose lift option.

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Note: Front trunk space was about the same width as the 458, but with slightly less depth and length. Much more useable than any Lamborghini, but if throwing in a couple of helmets and track suits, there wouldn’t be much extra space left over.

Note: The McLaren factory has the final capacity of producing 4000 cars (across all models) a year. However, their past record with producing the F1 and Mercedes SLR have indicated that it may take time and luck to reach full capacity. This means potentially soft resale.

Note: Oh, and nobody waved, honked, or took our picture. Not that I like that aspect, but it’s something to take note if you want attention with your $200K+ exotic. Traveling in a red Ferrari is like traveling with a circus (give me the cloaking device to make the Ferrari look like a Camry please). The McLaren is not. Maybe it was just the deep Volcano Red (almost maroon) shade of our tester.

Final note: The dealer had both the Volcano Red car, a SuperNova Silver car, and McLaren Orange car. The orange looks stunning, although sure to be a cop magnet. The Volcano thoroughly pleasant, if maybe not special enough, and the metallic flakes in the SuperNova paint were just too large for my tastes, making the car look a bit like a Matchbox special. However, the silver car did have the mid-level split spoke light weight wheels, and those looked incredible! Also reasonably easy to clean.

Willow Springs POC weekend – review

BRR group Wilows Dec11 small

(If you look closely at the image above, you will see our GT3, a BRAND NEW Porsche 997.2 GT3-RS 4.0, and Jesse’s 997.2 Cup Car)

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We have been gathering a growing group of customers who have moved up the food chain in terms of track activity, and many of these are now actively participating in time trials, with some even doing full Club Racing.  With these customers, the requirements for their cars and the weekends expands, with more specific development needed for active track participation.  Most of these cars have now made the leap, evolution, move or mind altering position of being a full time track asset….for those that were street cars, they have now made the transition to the dark side, where they are now a track car that may….may, still be driven on the street.  Some are 100% dedicated race cars….these can not be driven on the street nor to the events (like our growing base of Porsche Cup Cars).

The requirements on us as service provider continue to evolve as our customers evolve, and one of the key components that we have to demonstrate is that we have the experience, skill, resources, tools, data knowledge, track tuning capabilities…to be not only their shop, but again, one of the best shops for their cars.  To that end, that means we are having to consider that we need to change our role a little, for this is a point where head knowledge is not enough, we need to demonstrate that we can deliver the results as well.  This is not a small challenge…all shops would like to say they can play at this level, but how many actually have cars where they drive, where they compete, where their customers compete, and are at the top of the field.   Merely playing here is not enough.    We can’t choose our customers and their cars, so the ability to play at the front of the field really takes extraordinary effort.

So, rather than just sit on the sidelines, we wanted to start making a real splash in this pond, and that meant we would start to play ourselves. At no time do we ever want our role and our participation to take away from our customers…..they are and will always be our focus, and their efforts are supreme.  This is a difficult role to play….there have been many shops that want to play themselves, and they find that playing takes a larger effort and skill that it looked like from the sidelines or the stands…and as a result, their attention focused away from their customers, and their crew and time focused on themselves….a dooming effort.  That is a lose-lose proposition.  So, it is with some trepidation that we say we want to play in the pond ourselves, but when you hold yourself out that you know the best components, elements, software, tuning……at some point, you have to have results to back up those words.  So, off to the track we set.

Now, we didn’t need to do this because our customers can’t carry the flag for us on their own.  Far from it……and, as mentioned, we don’t “recruit” our customers, they recruit us, so who we have as customers is more due to our role and geographic location.  And our customers have immediately jumped to the top of the heap.  They didn’t just show up and play, they showed up and put themselves all over the podium….in fact, at Thunderhill in early November, at the POC race weekend, our customer won the main event (Jesse M in his 2011 Cup Car), and our other customers placed 2nd, 4th and 5th in the Time Trial.  That’s about as good as it gets.  And, that wasn’t with a small group, that was one of the larger grids.  So, together, BRR and our customers delivered the goods….and the results.   This was a HUGE achievement….you don’t just go say you are going to play in a golf tournament, and walk away w the trophy on your first try (but we did), you don’t enter your first sailing event and stun the participants with your strategy (but we did).  We even pulled off events that no one expected.  That was the first splash….but to make a name for your business, you need to do this on a regular basis.  And the sharks we are playing with are not idle hands…..they all want this.   You better be ready for what you have set out to achieve…..there are many failures.

So, our next step in the pond would be the Porsche Owners Club race weekend at Willow Springs.  Our customer Jesse M would be entering his Cup Car in the fast race group again, and we would be entering our street GT3 in the Time Trial event.   I will now chronicle the event from my view (Bruce), as I would be driving our GT3 for this event in the Time Trial.  I have driven a lot of cars, and driven lots of miles on lots tracks, but it has been 10 years since I’ve placed myself back into a full competitive event.  Plus, heck, I’m freakin OLD as well, I’m not one of those spring chickens that has no fear, or no family.  I’m on the other side of the hill, and taking the risk for the company to put myself in that role is questionable theory, and in fact, some would say the wrong play….but, what the heck.

Next, consider the track.  It has been 10 years as well since I’ve driven Willow Springs (WS) in anger and aggression, and driving that track at the limit is a LOT different than driving it for DE events.  There are stories a plenty about turns 8 & 9 at WS….most stories end badly…. “I tried a new line thru turn 8 and tried holding the throttle later…and hit the bumps, and quickly ran out of track, and ended up sampling the desert dirt”….or worse.  So, you don’t go attacking WS like any other track.  There are only a few turns that matter, but on a very fast track, those turns make all the difference in the world in terms of your track time.  Again, doing a DE and talking about the track is one thing, but driving in the race or the TT and competing for top time of the day puts the mindset in a completely different frame.  I wasn’t coming to drive just to see how it goes….I was stupid, bold, egomaniac enough to think that we could be near the top end of the scale.  But, to get there meant I would have to come to play, and play hard.  So, now all I had to deal with was my psychological unstable state, my anxiety, a very fast track, and a car that I had not driven at the limit yet.

For most POC weekends, there are events on both Saturday and Sunday.   Oh yeah, just to make things a little more interesting, why not change the wheels and tires, their widths, offsets, and front and rear balance, just to make things more interesting.  We had just added new wheels to the car, which allowed us to change the offset on the front and increase the track, along w the wheel width, and new wheels to the rear.  We had done this w full knowledge and planning, so again, time to put our designs to the test.

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Willow Springs has interesting weather too.  It is usually hot and windy, or cold and windy.  For Saturday, it started very cold (just above freezing for the first track session) with a slight breeze.  It continued to warm during the day, ultimately getting to about 55 degrees, or almost perfect.  And the wind was there too, but really not an issue.   For the first session, I just wanted to get used to the track again, and get the tires working, as the temps were cold, the track was cold, and the driver was cold.   The first session was good….all went to plan, the car felt great, the grip was there, but I had forgotten about all the bumps.   There are bumps coming out of turn 1, there are bumps going into turn 2, there are bumps going into turn 3, there are bumps….big bumps on the most critical turn, turn 8.   They talked in the download sessions about guys having 20+ years at this track, and knowing the line and the bumps.  I thought to myself….heck, this will take the whole weekend w my aging brain to remember all the friggin bumps and to find the right way thru them.  Goal for the weekend not looking too good right now.  The tire temps and pressures had come to right where we wanted, but I had not counted on the bumps.  So, talked thru the issue w our gang, and decided to make a quick shock valving change.   We have a plan to add data acquisition for shock potentiometers, but we didn’t have that now, so it was a question of which change should we make first…..compression or rebound, as those who play w race cars know, you can make lots of changes, but you don’ t want to make too many changes at once.  So, a small shock valve change we made (to compression).  In the first session, we ended up in good shape.  We were indeed at the head of the class, and turned a 1:33 on the few clear laps we had.  There was a large group all around that time, so I felt like we could indeed play.

Second session on Saturday would be with the shock valve change, and the heat was getting into the track.  Plus, I now knew what the track was, and time to start exploring the car and its limits.   But, I”m no Pro…and I don’t have the ability to assimilate the whole track and all the turn in points, braking points, throttle points for all the turns all at once.  So, lots more learning to be had in this session.  I had started at the back of the pack in the 1st session, but they motion me to move the head of the grid for the start of the 2nd session.  OK w me…should give me some clean track, time to explore and play hard.  The track was indeed warmer, and the shock change was good, the car could hold itself better coming out of turn 1 and thru turn 8.  But, it wasn’t enough.  The car felt like it had far more grip in store.  I was watching everyones lines as well….making sure that “my” fast line was the line that others that looked quick were also running.  We improved some in this session, we got down into the 1:32′s, and again, were at the head of the pack.  I felt good, and knew the car had more, but everyone else had made a better jump in their times…so, the group would be coming, and now, with us at the lead of the group for the first two sessions (and who the heck is that guy and that car…..this is often a Southern CA group…and you could tell that not many knew who BRR was).

For the third session, we made more shock changes.  This time, we continued the progression we had started with shock compression settings, but we had not gone far enough….and I wanted to make some changes to rebound as well.  As we were now pushing the car a little harder, we also had a small adjustment that was needed to tire pressures.  WS is mostly a right hand turn track, and you will see a big difference in the gain in tire pressures on the left side versus the right side.  What was both good and bad, was that I could feel that the car had a lot more in it, but with the bumps, I wasn’t feeling confident about exploring that limit.  I knew there were much faster times to be had, but would the car step out at the right time and bite me?  Between the 2nd and 3rd sessions, there was a drivers meeting for the time trial, and they also wanted to review the first 2 sessions of the day.   And, of course, I got called out in the meeting ( I swear it happens every time I get into a competitive mode :) …….  “who is the driver of the white, fast GT3?”  I raised my hand.  “OK, you’re too bloody fast, especially on the out lap.  We want you to lead the group out, but hold the whole group till you reach turn 3….then you can take off.  OK, got it?  Slow and steady till turn 3.  Got it”.

So, we line up for the third session, warmth still getting into the track, the air is cold and dense (can you smell power?).  I head out on the track, and play like this is a warm up lap for a race, holding the pace down.  The flaggers are all looking at me like I’ve gone mad….they’re waving the green flags like mad, trying to get us to go.   I can just hear them talking to themselves, “stupid driver, thinks he is pretending to be a race car driver….no really, I want to go, it’s race controls fault”.  I don’t believe in the weaving back and forth to get heat into the tires, but I do believe in the accelerate like mad, then stomp on the brakes like mad.  I also believe in dragging the brake on the exit of the pits on the out lap to also get heat into the brakes…I want those suckers as hot as I can get as soon as I can get.  So, exiting turn 2, I look over and see the whole group lined up and grouped together, and we’re approaching turn 3.  Time to go….so, just before turn 3, I take off like a canon.  The Porsche right behind decides he wants to come w me…OK, lets go, dive into turn 3, hard left, up the hill, then hard right at the top of the hill….but, I see in my mirror the Porsche right behind trying a new line….off he goes, into the dirt at the top of the hill….hmmm, maybe we needed a little more heat in those tires.  I’m now playing w different lines thru turn 6.  If I come out of turn 5 hard to the right, and stay right going over the crest in the middle of turn 6, I get wheel spin on the rear, and have to lift briefly to keep the car settled.  I reason that this is bad, as I want to be hard on the throttle from turn 5 all the way down the hill into 8.  That is the fastest section of the track, and I believe it is costing me time.  So, I try exiting turn 5 a little earlier, pulling to the left side of the track, and try crossing the crest of turn 6 at a slight angle to the track, but the car is steering straight ahead.   Seems to work, less wheel spin, and I can stay on the throttle longer.  Now its time to start exploring the limits of adhesion of the car thru turn 8….bumps and all.   So, I hold my breadth, and push harder thru 8.  I’m not flat out, and it feels like the car could take it, just not my heart.  Each lap is better, the car feels great, the changes worked as well.  The time came, not quite as far as I would have hoped, but improvement none the less.  We’ve recorded a low 1:31.  I know the car has more in it for sure, and set a goal of 1:30 for the Time Trial session, with a reach goal of 1:29.

The Time Trial is next.  Now, normally, I tell customers that new and used Hoosiers take about 2 full laps to come in, and after that they are great.  I don’t like to puss the tires hard on the first two laps, first, I’ve seen how they come in, and second, it just eats into the tire too quickly, they just become greasy at the end of the session.  But, for the Time Trial, we only have one warm up, and 2 flyers.  No time to worry about the breakin now, I’ve got to push.   But, my mind is playing w me.  If I warm them up too fast, and I’m trying to push thru harder in turn 2 and turn 8, will our two worlds come colliding together, and I’ll get to explore the desert?   Remember, no coasting…we’re either going fast, or we’re stopping, no in between…..that’s lazy ground in between.  Rico tells me….just go 9 feet deeper into the three key braking zones…just 9 feet.  So, tires, laps, 9 feet, turn 8 speed….got it.  We probably shouldn’t have, but since our other shock changes were working, we make one last change to the shocks, as we have tomorrow as well.  Off we go…..the car eating up all that I can give her.  I push beyond where I thought I had found the limit…and the car is just fine.  No abrupt breakaway, no nasty habits, no swapping of ends…..it just gets a little out of line, but you can play w throttle modulation even as the car is sliding sideways.  I push harder thru turn 8, and the car just soaks up the bumps (I’m amazed at the working of the shocks)….no loss of grip there either.  Two laps coming flying by, we head in.  I’m stoked, the car felt great, and I’m sure I got the 1:30.   Time passes, they finally post the time sheets, and we found new territory.  We made it into the low 1:29s….we were flying, and the car was a HOOT to drive.  Man, I haven’t had this much fun in a long time.  Can I go back out and play some more?   Can I, can I?  I want to go try some more…I want to see what the dark side is like w this car.

I think we showed well….we beat the next car by nearly 4 seconds….the 2nd place car turned a 1:33 lap to our 1:29.  Heck, I could have qualified in about 3/4 of the grid for the fast race group w Cup Cars.  I’m dazed, giddy, smiling….stoked.  And, I know the car has more to go.

Sundays dawns cold and clear….did I say cold?  I mean cold.  It is about 22 degrees at 7am.  When we filled up at the service station that morning, the windshield washer bucket was frozen solid.  It is cold…real cold.  And, just to make us know that we are in Willow Springs, there is a slight breeze blowing at 7am.  Did I say it was cold.   We get the cars prepped and warmed, and Jesse and I look at each other just before our 1st run group.  “You going out?  Not sure, you going out?  Not sure, I’ve never driven in snow conditions before w race slicks.”  So, I pass on the 1st session.  The car had felt great, almost too good, and now I’m wondering if I really want to test the limits of the car in these conditions.  But, then I watch the first session from the sidelines, and out go all those thoughts.  We chat amongst the team, and wonder since the car is so hooked up, if we should make a wing change since this is such a fast track.  We’re hitting over 145mph in 2 places on the track, and if we are running too much wing, then we’re just slowing ourselves down.  So, we decide…sure, lets try it, lets take a hole out of the wing, go flatter (less rake), and see if we can even tell.   The other groups report that the track is holding well, plenty of grip.  I don’t want to waste the tires, I just want to test the changes we made, and start exploring the limits again……they may be more my limits, not the cars.  Now realize that we’re talking about one hole change in the wing.  Can we even feel a one hole change in the wing?  We can’t see any difference when we look at the wing.  But, there was a change.  With the new wing change, I can feel the change in total speed coming off the hill and I can feel the speed coming down the front straight.  But the big change is the grip exiting turn 2.  At about 7/8ths of the way thru turn 2, the rear of the car gets light, and I start getting rear wheel spin under full throttle exit.  Sort of the same thing in turn 8…the car feels less settled, jumping around a little more.   Car works fine, but robs me of some confidence, and not the direction I wanted go to find the extra speed in the car.   We only got 1 clean lap, so I didn’t expect much from the timesheets, and they bear this out.  Our times are in the high 1:29s…..not where I wanted to be, but we leaned something.

We make the change back on the wing, and wait for the TT session later in the day.  I use the next session to try some different lines again, to see if I’m leaving time on the track.  Session shows that we didn’t gain anything.  Since we don’t have any data acq on the GT3 yet, I don’t have the ability to really break the track down into sections to compare w other laps to see where the speed is (just wait for next year).  I’m still ecstatic with the car, and come in after each session with a huge smile on my face……what can be better than this?  WOW.

For the TT, we are grouped at the head of the pack, and use the same process that worked so well on Saturday.  But, just like the gain we made in the TT yesterday, I want to push really hard in this run group and see if we can’t break into the 1:28s.   First lap, I decide to push deeper into the braking zone in turn 1.  That works just fine, carrying more speed thru the turn and into the exit as well.  Ahhh….the exit.  Haven’t talked about the exit of turn 1 yet.  Just to make the turn exciting, turn 1 has banking, and you can carry a good amount of speed from the fast front straight into turn 1.  That is the good news.  The bad news is that at the exit of turn 1, the track falls away, and goes from being banked to being off camber.   And, just do you know that others have found this limit, there is a big rut on the edge of the track where many have dropped wheels there.  So, my speed into turn 1 was great.  Mid turn felt great.  The exit…not so great….and we carried too much speed there, and sure enough dropped a wheel into the dirt on the exit.  Crap…there goes that lap.  Since this lap has now turned into a throw away lap, I try a different exit off the top of the hill in turn 4 to see if I can get the car to rotate better (I”ve been using left foot stab of the brake up there, and that seemed like it was working well, but time to try something else).  I get something else all right….not as bad as some of the other cars that have spun up here, but I do get the rear end loose….crap, more time lost here.  OK, no need to push thru turn 8 really hard, no gain, lets save the tires.  But, I’m early on the throttle entering turn 9 and into the front straight…we have one lap left.  The whole lap goes well.  We come off the hill, flying down into turn 8….time to find out if the car can hold it….no feathering of the throttle this time, time to go for it. OMG…the car holds, and we’re freakin flying.  We come thru turn 8 alive…and the car in one piece.  My mind is racing….this is just awesome, I know I have a fast lap.  But, in all my brief moment of elation, I forget to adjust my braking point entering turn 9 (which is the exit to turn 9….they’re all one section)….I go flying into turn 8 exit and turn 9 braking zone, hard on the brakes…and oh my goodness, I’m running out of track (now, at WS, when you run out of track, you run out of track…and you are quickly tossed into the desert)….I’m sliding the car w the wheels on the edge of the track.  I’m thinking I have two choices here…either go off, straight off, or turn and spin the car.  I decide on the later (I know this is not what I tell most of my students…I say, just go off….but at WS, you really don’t want to go off, there are BIG boulders and man eating things out there in that desert….we’ve seen them, the cars that have gone out there have come back to the pits bearing the evidence of the things the monsters on the outside of turn 8 and turn 9 will do to a car….I’m not going out THERE!).  I wonder…how much can you slide one of these things.  So, I trail brake, scrubbing off speed, sliding the car…….and…and…..the car holds it’s line and starts to turn in for turn 9.  Wow…but, now I’m way late for turn 9, and I’m starting to see all the marbles laid down on the outside, off line area of turn 9….this is another area that you don’t want to go.  My mind races ahead again….great, you saved it in turn 8 exit, only to find the marbles and go flying off in turn 9.  Way to go.  But, the car continues to hold….and like any good Porsche driver, I add throttle, and make it thru turn 9 and onto the front straight.  WOW….my heart my have had a moment, but the car didn’t.  The downside, w all the sliding thru the turn, I know I’ve now lost this lap as well.  Crap…oh well, we learned a lot more about the car and the levels of grip at the limit at 145mph…..just amazing.    We come in.  Heart calms down.  I’m drained….I just slowly drive the car around the pits to calm down (and I needed to use the car to go get Jesse M for his race, he was up next, and they had moved the schedule up and he needed to grid up, so we used the GT3 as a taxi to get him back to the pits).  Time sheets went up….I was hopeful, but resigned that I might have screwed it up.  Time was posted……we beat Saturdays time, but were still in the 1:29s…..but dang…I now know that the car has a 1:28 in it….

Such fun…..not a thing I would do to change the car other than have data to use.

That was our turn…..and as I stated, our customers shine as well.  Jesse M was running his Cup Car as part of the BRR group in the Red Race Group.   This is the fast run group.   This is a track that is not high on Jesse’s list of fun track either (wasn’t on my list before this weekend, but now am thinking again…hmmm), and he certainly explored the limits many times thru the weekend.  But, he also persevered, and we made several setup changes to the car to also adapt the car to the track and conditions.   All changes were in the right direction, and Jesse made outstanding progress each session.  Every session, every time out, he dropped his lap times.  The result was that he qualified 6th for the race on Sunday, and made the move of the day on the start entering turn 1.  While everyone was setting up for turn 1, he just went there, and took the whole group by surprise.  He went from 6th to 1st in turn 1 (and they all say that you can’t win in turn 1, HA!).  He then drove the skins off the tires, and completed the race coming home 2nd, beating many cars w extensive mods to their cars while Jesse runs to the true spec definition for the Cup Car class.   WAY TO GO Jesse……an amazing weekend again for the BRR group.

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They may not have known much about us before, but there is no question going into 2012 that when we show up, they will know who the BRR group is.  Can’t wait for the next event…..WOO HOO.

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