Picture of the Month #37
 

Re: Picture of the Month #37
 

For those less interested in the photography specs, and more in the car:

Krokodil reports he's running a 2007 Cayman S - slightly modified ;-) - in POC GT3 Class - 335 RWHP, 2860# (with driver), on Yokohama Slicks. The car is built and maintained by Vision Motorsports in Laguna Hills, CA

Re: Picture of the Month #37
 

Cool. Glad to hear of more Cayman in competition. Thanks for the picture. Ed

Re: Picture of the Month #37
 

Thanks for posting the picture Beez!

This car was/is one of the first competiion Caymans built in the US (and the first on the West Coast). It has been a dedicated race car for four years - winning the GT3 class championship in 2012 - and ran as a drive-to-the track race car for a year before that.

Cheers,

Re: Picture of the Month #37
 

Can you tell us more about this car? How did you get 335 RWHP in a Gen 1 3.4L motor? For example.

What suspension mods and weight savings were accomlished and yet made the car still street legal? Brakes? What type pads? Wheel sizes , etc.

If you don't mind of course. Plus a few more pictures would help as well. Ed

Re: Picture of the Month #37
 

The engine is a 3.8L

Re: Picture of the Month #37
 

Awesome action shot! Thanks for posting it.

Re: Picture of the Month #37
 

Ed,

As Diverdog posted above, the current engine is a Vison built 3.8, not a 3.4. The 3.8 makes about 360 RWHP unrestricted, but we run an intake air restrictor to hold the RWHP to about 335 to meet class rules.

However, we did race the car for several years with a 3.4 Gen 1 engine. It was built and prepped by Vision Motorsports and made about 305 RWHP. This engine ran an EVOMS program, larger TB, decked heads, headers, open exhaust, UD pulley, etc. This is pretty much all you can do to a 3.4 to make power, so I would say that is about it for a M97. There may be a bit more in the 3.4 engine, but it would require changing theintake manifold as our testing showed this to be the final, critical restriction.

As for the rest of the car - it has not been street legal for quite some time. I think we removed maybe 120 pounds of stuff while it was still street legal, but that is about it. The car ran Bilstein PSS9s at the time to meet class requirements.

Now the car is a fully gutted and caged race car (for the last four years).

We run 9/10 x 18 Fikse Profil10 wheels with 250/650 and 280/680 Yokohama slicks.

Brakes are stock calipersF/R, stock rotors in the rear with Wrightwood Racing Indycar rotors up front. Pads are Pagid Blacks. We also run the 997 Cup dual master cylinder system and a Teves motorsports ABS.

Steering is converted to the GT3 Cup electric system.

Suspension uses JRZ TA dampers, Porsche Motorsports, Tarett, and Kokeln parts, and some trick geometry changes.

Here is a recent video:



And more photos:









Cheers,

Re: Picture of the Month #37
 

THanks for the info. Sounds like a cool race car. THanks again. Ed

Re: Picture of the Month #37
 

Next time my instructor tells me to stay off the curbs.......

Re: Picture of the Month #37
 

thanks for getting my snow car off the picture of the Month... I was getting cold just looking at it..
Nice drive today, temps 80's

Donnie C.

Re: Picture of the Month #37
 

Awesome action shot.... I love it..!!

Re: Picture of the Month #37
 

:smile: Too funny....

Re: Picture of the Month #37
 

Great pic, and great thread.

Re: Picture of the Month #37
 

Nice shot! I am curious what times you ran at buttonwillow? I was there the a couple of weeks later-very hot) in a stock 06 Boxster. I'm thinking about adding a 3.4 to the car and doing some suspension mods.

Re: Picture of the Month #37
 

Great video, and great driving. It always impresses me how easy the pros make it look.

Oh, and the car sounds great too!

Re: Picture of the Month #37
 

Thanks, but no pro here, just another hack amateur.

Cheers,

Re: Picture of the Month #37
 

Thanks.

Which configuration at BW? POC runs the longest configuration - essentially Race#1 plus the extended off ramp / A section (+ ~ 2 seconds). My fastest qual time their is OK, but not great at a 2:01.X

PCA & NASA typically run Race #13 (no A section or Star Mazda) or Race #1 (no A section).

Here is a link to the maps: http://buttonwillowraceway.com/track-info/track-maps/

For a few fixed configuration tracks:

WSIR - 1:24.1
AAA Roval - 1:44.5
Chuckwalla - 1:52.7

Cheers,

Re: Picture of the Month #37
 

Wow. I went to their site to see what course you were talking about. There are sure a lot of various track configurations at Button Willow.(27) And I thought VIR was complicated with only 5 configurations. Full, South, North, Patriot, and Grand East Ed

Re: Picture of the Month #37
 

Make that 6 if you count Grand West.

Re: Picture of the Month #37
 

-thats really humpin!! Thanks for the other track references too. On average my base car is about 12 seconds behind. Seems like an eternity.. We ran #1 long version CW with Nasa. First time with them and did a 212. New track record was set in same session with an m3 at 210.8. Have to run 245r6 square to make class. Will be adding stiffer springs next. Need to drop 1.5 secs and hoping the springs will do it. Not a lot of mods can be done to stay in class. But, if I add the 3.4 I would bump up two classes and can do a few more mods (no aero) Times are apx. 3-4 seconds faster. I think with a tuned 3.4 restricted to about 280whp and larger tires it may be possible? By chance, can you recall some of your times when it was a gen1 on pss9's? Hey lets switch cars at the next one:) Bring that beast to el toro some day.

Re: Picture of the Month #37
 

Hmmm. Testing my memory.

As a 3.4 street car with full interior, stock exhaust, no aero, PSS9, and Hooiser R6s we did a 1:32.0 at WSIR and a 1:52.X at AAA Roval. I believe the car weighed about 3270 with driver (and made about 285 RWHP or so).

When we first gutted the car, added aero, opened the exhaust, but kept the car on PSS9s and R6s we ran about 1:27 or 1:28 at WSIR and about 1:48 at AAA Roval. The car weighed about 2920 or so and made about 303 RWHP.

Adding slicks, the JRZ's, and removing a bit more weight took us down a couple of more seconds and then the 3.8 another second or so.

I can not remember my BW times, but I suspect they are on MyLaps.

I may try to find a weekend that works to bring the car to El Toro. It has been a very long time since I have AXed (as evidenced by my clipping a cone in Vegas) so I wouldn't expect much.

Cheers,

Re: Picture of the Month #37
 

Good stuff for data comparison. Thanks for sharing. Based off your results the cayman S could fair well in Nasa. Next weekend is a free instructor appreciation day at the Q. They will also be recreating the slalom feature from Vegas. Should be interesting*