I have 911 T and was thinking of doing mild SSP build. Car seems well suited for SSP even against monster GT3s . It has great gearing, turbo torque, if optioned right its light weight. I look at T narrow body as being advantage in AX. Just wondering is anyone else has looked at 991.2 as SSP car? Would do gt3 control arms Ohlin coil overs, lightweight exhaust, IPD plenum, intake, I wouldn't want to flare car so Id be at disadvantage on wheel widths but think can might actually be dark horse on more narrow technical courses where GT4's get bogged down with that tall 2nd gear and GT3s might be a little too wide. Running car in SS now and I suspect will get pounced on by GT3s but will see! As SSP cat the T will be under 3000 lbs and make decent HP.

Probably a fun regional car but probably not a national contender but I just love building cars that don't seem to fit well.

 

SP is dying a slow, agonizing death. I'm sure it would be fun on course, but it's not much fun being in a class of 1 or maybe 2 at most events.

Edit:
Looks like a simple OTS Cobb accessport would bump a Carrera T +70hp +120ftlb. Wowzers.

 

I'm doing a not so mild SSP build with my GT4

simple suspension stuff: stiffer springs, front camber plates, rear toe link.. Front caliper replacement to allow 18 inch wheels.295/315 Hoosiers.I already had MCS doubles.
and a big power boost from Dundon Motorsports. the full meal deal gt4 package: race headers, mid pipes and the quiet center muffler. Intake runners, IPD Plenum, gt3 throttle body and a tune.

First test session with just suspension mods went pretty well...

 

Yeah I call T my little narrow body "GT3" with torque. Although little 3 liter liter does have a bit of lag. With my car that has rear seat delete and all light stuff it will easily be below 3000 lbs. Thinking it will make well over 400 HP. We have a pretty active SSP gang on west coast. Couple GT3's , GT2, fast Nissan GTR. Plus its fun to have SSP car for PCA events. SSP class for Crows National tour later this month has 7 SSP drivers signed up so far - would have been 8 with me but Im signed up in SS with only 3 right now.

 

Yeah Im evaluating a similar build. That looks like fun! Im looking to do IPD, intakes, tune, have Sharkwerks muffler on order. Adjustable gt3 arms, coilover sleeves on my stock dampers with DSC controller, Starting off on cheap and then start adding nicer coilovers, Im just wondering how much tire I can get under front of narrow body 991.2. DOesnt look like much room and I dont want to roll fenders. Hoping at least 285/35/19 on a 9 or 9.5 inch wheel. rear should be easy 315 or more.on a 12 inch wheel.

Smart move going to 18s. Im stuck right now with 19

 

Are you allowed to do headers? A set of the Vektor Performance headers would help out with the lag and transient response.

 

Yes and headers will be on list.

 

 

Nice! Were you able to do before/after dyno? The dyno from the customer in Colorado on stock tune doesn't reflect most owners as it was done at elevation. So it was a bit of a special case of being at altitude on a stock tune where the ECU may be doing interesting things with hitting torque targets. So I'm curious what gains will be seen at sea level on a stock tune. And then what the gains would be for stock exhaust tuned and modified exhaust tuned. I have no doubt there's power gains across the board in tuned vs tuned condition.

 

Did you end up selling the Cayman?

-Mark

 

Yes went to a fast home in SF Bay Area.

 

I have tractive coil overs on order with DSC Sport now with spring rates similar to stock GT3. Working on power improvements now. Looking at headers, sport cats, IPD plenum, tune etc. Biggest challenge right now is wheel and tire setup. I don't have a lot of experience with 991.2 narrow body and not many people setting them up to be competitive in SP class. I want to use 9.5 inch wide wheel in front with 265 Hoosier but everyone I talk to says it wont clear stock fenders. I look at it and it looks doable but cant find anyone that has put 9.5 wheel with 265 Hoosier under narrow body. I figured that's minimum I need to be competitive with GT3s that run 295 up front on 9.5 inch wheel.

 

I know you know more than most but it is worth saying that what we consider acceptable fitment in SP in an autocross setting is very different than what most do in general practice. I am not sure what you run for camber, but in my Macpherson strut BMW once I go to the -3.6 degrees that I run, I easily add at least 1" of additional clearance over the "traditional" wisdom of what will fit. If there aren't serious track guys or autocross points of reference, the best thing to do is add the camber, change the ride height, and start measuring inboard and outboard of your current wheels to determine what is possible.
-Mark

 

Yeah I will likely need to do that. I’m just lazy and always like to just copy people who have forged new ground before me. But won’t be new for me. ....Hell I have done some crazy stuff over years. 15 inch wheels with cantilever slicks on boxster. Then 16x10 front wheel under stock but heavily rolled 986 fender. Followed by 11 inch front wheel on 987.2 cayman.

 

Since when do tires need to fit under fenders in SP?

Took a look at SP classing for the first time in a while & unclear you should be in SSP. Porsche listings there show various GT cars & Turbos only. There are no 991's in ASP, therefore I'd suggest running in BSP under the '911 (non-turbo, NOC)' category.. or ask the **** for clarification.