bassam

I tried to sell my 1989 c4 few months ago with no luck so I did this:

-moton clubsport
-solid bushings suspension
-camber plates
-993 g50 with with short gears
-roll cage
-fiberglass doors, hood, wing
-solid trans/engine mounts
-235/18 285/18 michelin sport cup tires
-RS sway bars
total weight with 3/4 tank 2560 lbs, corner balanced and aligned.

Thank's to this forum (lots of info on everything), Steve at Rennsport (suspension and gears) and Joel Reiser (info on c4 to c2 conversion) and my mechanic, the result was a very competitive car on the track, almost Top time if it wasn't for low fuel that made the engine shut off on right hand sweeper!

ian89C4

Nice! That is end state for me, but I think I am going to leave it AWD and try and gat my PCA club racing license. I have to do it piece by piece though (darn budgets!!!)

Oracle

Sweet car! What was the original weight?

bassam

don't have the weight before the mods but it drives like a kart now!

rcarpen22

What size spacer (if any) did you have to use to fit the 996 wheels? Did you need longer studs? The car looks great and I'm sure it's a blast.

bassam

5mm front same studs, 17 mm rear studs are part of the H&R spacer. got some rubbing on the rear so moving to 21 mm. with 275/18 rear no problem.

rcarpen22

I love those wheels on a 964. They look great.

joey bagadonuts

Cool story!


I used to race a C4. Great car for PCA and you'll have plenty of competitors in E Class. I only switched to rwd after it experienced an unfortunate off, otherwise, I'd still be running it.

Gone but not forgotten

ian89C4

Yeah, I love the way that she handles! I have pondered trading out for a C2, but I love the car and I think that I would miss her too much.
I am going for the stock class and have looked through the 2009 club racing rules, but can you chip the car or will that bump me up a class??

joey bagadonuts

Chip is a Prepared mod, so that would progress your car from Stock E to Prepared F. Stay in E--that's where all the action is.

Besides, some of the fastest 964's in PCA run a stock chip. Of course, these cars are very well set up and have great drivers, so chips aren't exactly a game changer. Plus, a C4 can run with the best of them in E even with a stock chip. Just check out Chris Reinsborough's results at Lime Rock and Watkins Glen.

With a good suspension (Moton, JRZ or CROSS) and cat and muffler bypasses, the C4 is a pretty capable track weapon. Add decent pads and rubber, along with ample seat time and instruction, and you'll be up to speed in no time. Feel free to pm with any other set up or race questions you might have--alway glad to help.

BobH20man

Bassam--Cool set up. Where did you get the body parts?

bassam

Doors, hood from better bodies, splitter rennspeed and eBay for wing.

Steve Weiner-Rennsport Systems

Hi Bassam,

Well done, Sir.

My compliments to the "Chef",... That was an ambitious undertaking and it looks like it came out very nicely.