Vandit

I read lots of comments from veteran members/racers saying most 964s are set up wrong and how the car was slow around the track until you realize it was setup wrong.

Can we share some specific experience/knowledge regarding 964 suspension tuning?

Thanks.

HalV

Great topic...I was thinking about creating a similar post after the responses I got in Kai's thread.

KaiB

I don't quite know what the answer is guys.

Most of the setup info here has been spot on IMO - of course there are tradeoffs btw street and track, but these have also been covered here quite well.

I can say that the student's cars I've had the pleasure of driving at DE events have been, for the most part, reasonably well set up and certainly capable of going around fast enough to learn on.

My car is PERFECT for me and there is nothing about its setup that might be secret or unusual.

I'd also like to know what's so terribly wrong with most of the cars out there.

HalV

Kai, in your other thread you said you like a "Loose" car. I realized that I may not like this set-up, but what did you do to make your car "Loose"? In addition do you determine if the car is too loose or not loose enough for you?

KaiB

Hal, the fact that the car has a full on monoball suspension, aggressive alignment and stiff (race stiff) springs makes it react to driver input (and its own little whims) very quickly. As I began to learn how to work this car - after the build - it had a bit too much understeer from mid-corner through power on after the apex - but this is comfortable and a good place to start.

So, we did what people do and played with damper settings, tire pressures, a bit more toe up front and the sway bars (which then ended back up where I started). The car now tends toward oversteer (after corner entry) which I control with the throttle and, at times, tiny inputs from the wheel. It's faster because I can turn it with the throttle and it now reacts to my inputs as I would like it to.

The car at the moment is still faster than I am - but I'm also ready to tighten it up even more; in some places, at some times, I have a feeling I'd like a bit more car beneath me so we'll tighten up both sways, go back to tuning the dampers and see. The next step is more spring, but....

I've found with this car, once bump is set for the track (compromises all around), then fine tuning the rebound can tune the characteristics of driving dynamics (in general, the rebound can help control the rate of spring return). Two pounds of tire pressure, here and there can also make a relatively large difference in how the car goes around.

BLACK-BETTY

Zero toe for the C4.

Vandit

Front or rear?

BLACK-BETTY

Front

ja78911sc

Me too

This was the best 140 bucks I spent on track prep.

Vandit

So you guys are toe-in on the front and rear?

I was aiming for zero front toe and slight rear toe-in on my recent alignment, but the tech gave it a bit of toe-in all around. I'm not sure if that's good or bad.

Mine is a C2.

ja78911sc

Zero toe on the front and slight toe in on the rear.

njansenv

Are we still talking about WRONG 964 suspension setups?

ja78911sc

My bad

bassam

I'm not an expert but this is how I look at it, a wrong setup is when the car doesn't do what you're asking it to do or when you have to wait before the car responds to your input. With a race car you have a lot of variables to adjust and get the car to where it should be, like shocks, roll bars, tires ride height etc... On a street car there is not much adjustability. Most street cars understeer and an understeering 964 is a slow one.

niche

Wrong set up: stock c4