C4 Alignment for Autocross
Thread Starter
Instructor
Joined: Oct 2000
Posts: 180
Likes: 0
From: Coral Springs, Florida, USA Florida
C4 Alignment for Autocross
I've got a '93 Vette with FE1 suspension that I use as my daily driver
as well as autocross in SOLO II events once a month. I don't use race
tires, just good hi perf street tires. I've also got a set of Koni adjustable
shocks that should arrive today & will be installed this weekend.
My question is what are good alignment specs for this setup?
I'm currently running about .5 degree neg camber both front & rear,
1/8 total toe out on the front, & about 1/8 total toe in in the rear.
This is from memory, but I think it's close.
The interesting thing is that I lowered the car about 1/4 inch --
just enough to level it -- and the car seemed to corner ALOT better.
My theory is that I added more neg camber to the rear which accounted
for the better cornering. I figure I've now got about .75 deg neg in the
rear & the same .5 deg neg camber in the front.
However, I've read that you want LESS neg camber in the rear than the
front. This is opposite to what the car seems to like. One other further
complicating factor is the fact that the max neg camber that I can run
in thr front is .5 deg due to my specific car.
I'm looking for a good setup for the track (race once a month), but need to get 1 year of life from the tires on the street.
Any suggestions?
as well as autocross in SOLO II events once a month. I don't use race
tires, just good hi perf street tires. I've also got a set of Koni adjustable
shocks that should arrive today & will be installed this weekend.
My question is what are good alignment specs for this setup?
I'm currently running about .5 degree neg camber both front & rear,
1/8 total toe out on the front, & about 1/8 total toe in in the rear.
This is from memory, but I think it's close.
The interesting thing is that I lowered the car about 1/4 inch --
just enough to level it -- and the car seemed to corner ALOT better.
My theory is that I added more neg camber to the rear which accounted
for the better cornering. I figure I've now got about .75 deg neg in the
rear & the same .5 deg neg camber in the front.
However, I've read that you want LESS neg camber in the rear than the
front. This is opposite to what the car seems to like. One other further
complicating factor is the fact that the max neg camber that I can run
in thr front is .5 deg due to my specific car.
I'm looking for a good setup for the track (race once a month), but need to get 1 year of life from the tires on the street.
Any suggestions?
Le Mans Master
Joined: Jan 2002
Posts: 5,320
Likes: 4
From: Kyle TX (Because Mojo Made me fill it in)
Re: C4 Alignment for Autocross (foliva)
Here, you can also check out this previous post on alignment too.
http://forums.corvetteforum.com/zerothread?id=248958
:cheers:
http://forums.corvetteforum.com/zerothread?id=248958
:cheers:
Racer
Joined: Jan 2002
Posts: 258
Likes: 0
From: South Glastonbury CT
St. Jude Donor '06
Re: C4 Alignment for Autocross (foliva)
Hi Foliva, I race SCCA Autocross on my street tires as well. I have suspention mods that make the car about .5 inches lower than stock. I am currently running:
- .75 Camber (Front)
- .50 Camber (Rear)
6 degrees of Caster (Front)
0 Toe (Front)
0 Toe (Rear)
This may not be the best set-up, but it works for me on street tires. Also, if you want longer life from your tires, set the toe to 0. I have a set of rear Hiem joint strut rods which help a lot when you need to dial in more or less negative camber on race days. I hope this helps. If you find out any interesting ideas on set-ups, please let me know.
:cheers:
P.S.
[One other further
complicating factor is the fact that the max neg camber that I can run
in thr front is .5 deg due to my specific car. ]
FYI - I can get almost a full degree on my 94.
[Modified by mj_duell, 8:42 AM 7/13/2002]
- .75 Camber (Front)
- .50 Camber (Rear)
6 degrees of Caster (Front)
0 Toe (Front)
0 Toe (Rear)
This may not be the best set-up, but it works for me on street tires. Also, if you want longer life from your tires, set the toe to 0. I have a set of rear Hiem joint strut rods which help a lot when you need to dial in more or less negative camber on race days. I hope this helps. If you find out any interesting ideas on set-ups, please let me know.
:cheers:
P.S.
[One other further
complicating factor is the fact that the max neg camber that I can run
in thr front is .5 deg due to my specific car. ]
FYI - I can get almost a full degree on my 94.
[Modified by mj_duell, 8:42 AM 7/13/2002]
