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I really enjoyed the article on your website on the build of your Cayman racecar.
Here's the part on your "strip down":
"The car was still on the alignment rack and the interior bits filled the
area behind it. All the way to the back door! Before we began to
clean up and store the parts (Mantis had to open for business
on Monday), we weighed the car, 2600 lbs, there was over 400
lbs of interior parts spread across the floor of the Mantis shop."
Can you tell us which parts accounted for the majority of that 400 lbs and which are mission-critical (I'm assuming the engine cover is not an item you can leave removed!) At some point I may want to make mine a full track car and just rape its soul to get a better weight/hp (I'm not a racer but appreciate the value of any weight reduction).
Would've just PM'd you but thought this might be of general interest.
Congrats on all yout success out there!
Anyone plse share your experience on this too. So far I have GT3 seats that take off about 50 lbs total and apparently the Milltek system is 10-20 lbs lighter than OEM.
I've had my interior apart (see articles) and I find it hard to believe that there is 400lbs in the interior that can be shed. Most of that would be in the seats, so replacing with GT3 seats is probably the single biggest improvement. The entire rear area plastic and headliner and center console and engine cover 'maybe' weigh 50 lbs cumulative. Take off door panels some other dash parts, and carpet and maybe you get another 50lbs, but I find 400 very hard to believe. Stan and Ernie's car weighs in at what 3104 with driver, assume 200lb driver that's still 2900lbs My car with GT3 seats and no driver is 3024, so it would appear that their car is maybe 100lbs lighter than mine, 125 tops.
I agree the seats are the biggest improvement. Stan and Ernie probably included the seats in that 400lbs they reference in their article.
AC and NAV system another 30 lbs you think?
For reference, my alignment and roll cage guy (extremely knowledgeable on all things Porsche) thought he could probably get 150-200 lbs total if did a full strip (interior trim, undercarriage etc). But would be a noisy ride!
So all in with GT3 seats (50lbs net), a race battery (30lbs net), interior strip (150lbs net), Millek header/exhaust (15lbs net), race wheels (20lbs net), PCCBs (30 lbs net?) prob looking at 2954 - 295 = 2659lbs for a barebones killer Cayman.
Reason I ask is I was checking out the PCA club racing - the Cayman S would be in the GTS 3 (non-stock and up to 3.4l) series. Most of those cars seem to be under 2500lbs.
PCA - Porsche Club Of America
The Porsche Club of America - http://www.pca.org
CaymanClub.Net members who are also PCA members should request access to the PCA Member only forum by filling in their PCA Member ID# into their profile and then requesting a group membership addition, both of which can be done in the User Control Panel (User CP)
Total HVAC system in car (including HVAC module, Compressor, Condenser, Control, Lines etc) is about 50 lbs.
Oh yeah the total HVAC yes, I think he was just talking about the control unit in the dash. I don't think they removed the total HVAC system but I'm not sure, maybe Stan will chime in.
I agree the seats are the biggest improvement. Stan and Ernie probably included the seats in that 400lbs they reference in their article.
AC and NAV system another 30 lbs you think?
For reference, my alignment and roll cage guy (extremely knowledgeable on all things Porsche) thought he could probably get 150-200 lbs total if did a full strip (interior trim, undercarriage etc). But would be a noisy ride!
So all in with GT3 seats (50lbs net), a race battery (30lbs net), interior strip (150lbs net), Millek header/exhaust (15lbs net), race wheels (20lbs net), PCCBs (30 lbs net?) prob looking at 2954 - 295 = 2659lbs for a barebones killer Cayman.
Reason I ask is I was checking out the PCA club racing - the Cayman S would be in the GTS 3 (non-stock and up to 3.4l) series. Most of those cars seem to be under 2500lbs.
cayman will be killed in GTS3 for sure.
the only class it has a chance is in D, where mantis is racing in.
cayman will be killed in GTS3 for sure.
the only class it has a chance is in D, where mantis is racing in.
I think you're right. I checked out all the members on porschereacingclub.com and the GT3 class (up to 3.4l) has all these 1970's 911s that weigh in around 2000 lbs. Prob the same weight/hp ratio as a stripper Cayman but the handling of a light car makes the diff.
This is a shame. We need a Cayman spec series. Then again I can wait, not anywhere close to racing yet
