Rear Camber Adjustment on 84 944Cup car
11-17-2008, 05:24 PM
#16
Burning Brakes
I found using the ratchet strap to be a huge help. Also, put a little oil in some 1gal ziplock bags and put them under the tire. It will allow for quick and easy movement. Lots of trial and errror with this method, but it works. I do all my alignments on my cars at home with scales, smart strings and a few other tools. If it is good enough for the pro's at the track it shoudl be good enough for me.
11-17-2008, 08:25 PM
#18
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Thanks for all the help. I ran a Seatime event on Friday at Roebling Road, after adjusting the camber front and rear. I had -3.5 degrees in front and -2 on the RR -3 on the LR. The car was a lot better than the week before when I discovered the 0 camber on the LR. I didn't have time to mess with the toe. I will go back and adjust the LR camber and setup the toe Front and Rear. How does -3.5 front and -2 rear sound for RA-1s? For R6s?
My car is very happy these days at 3 deg rear camber, 3.25 front, with R6's. VERY stiff suspension (34mm hollow rear t-bars).
3.5 up front doesn't sound helpful, your straight-line braking performance is gonna start to suffer...
11-17-2008, 09:32 PM
#19
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That diagram is a big help. I wish I had it when I started. I can increase the RR camber to get to 3 degrees. Does 1/4 degree (3.5 to 3.25) make that much difference? I was running RA1s and it seemed pretty good. I have a used set of Hoosiers that I might use also. I have a 4 day weekend coming up at Roebling. one Test and Tune, and 3 sprint Races, so I'll probably go through what's left on the RA1s and the R6s. What's a good compromise for using both tires?
Last edited by johntorg; 11-17-2008 at 09:49 PM.
11-18-2008, 08:40 AM
#21
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Cheers!
Re: 1/4 degree - depends on how fast you're going!
You might even be happier with 3.0 degrees...
Re: 1/4 degree - depends on how fast you're going!
You might even be happier with 3.0 degrees...
11-18-2008, 09:16 AM
#22
Rennlist Member
Cory, in your images, one conflicts with the other... in terms of which adjustment is for camber and which is for toe...
Also, in the 944 service manuals, there's a whole section on the "proper" ride height and tolerances.
To the OP, I've got my car set to the minimum ride height in the factor spec (floor to bottom of caster mount bolt = 5.75"; floor to underside of spring plate cap = 9.25"), about -2.0* front camber, about 1.75* rear camber, zero toe both front and rear (I would only use this with ALL solid suspension bushings).
I have been very happy with this setup - even tire wear, pretty even tire temps, and fantastic handling.
Also, in the 944 service manuals, there's a whole section on the "proper" ride height and tolerances.
To the OP, I've got my car set to the minimum ride height in the factor spec (floor to bottom of caster mount bolt = 5.75"; floor to underside of spring plate cap = 9.25"), about -2.0* front camber, about 1.75* rear camber, zero toe both front and rear (I would only use this with ALL solid suspension bushings).
I have been very happy with this setup - even tire wear, pretty even tire temps, and fantastic handling.
11-18-2008, 01:49 PM
#23
Race Director
it dpends on alot of things. I ran -3.0 instead fo -3.5 on my 944. Result... crappy understeer. I went back to -3.5 and the car turned in and stuck alot better. Braking may have been slightly worse, but overall lap times went down since I got better front end grip.
