how to adjust my illuminas?

Ok man when the rear end wants to come around when you turn that is oversteer. If your trying to turn and the car doesnt seem to turn as much as you think it should, thats understeer. basically, Stiff in the back and soft in front will cause lots of oversteer (since our cars are also nose heavy). Stiff up front and soft in the back will create understeer. I find the best street setup to be 2-3 back (2wet, 3dry) and 5 up front. It gives predictable handling (slight understeer/oversteer) and ok traction for street launches. For long trips its 1-back 2-front. Then this baby rides like a lincoln. Just dont get too crazy with this setup cuz the car will slide. For the track I tried the long trip setup with bad results. Next time I plan on trying 1 back and 4 or 5-front. Im still experimenting with the track setup. Under no circumstances do I recommend 5 in the back. Thats gonna give you too much oversteer to be safe on the street. I found 3-back to be plenty, I havent even tried 4 yet, so forget about 5 in the back. Anyways, I would start with 1 back and 3 front. If you want more steering response crank up the front a notch or 2. If you want more oversteer in the back find what you like in the dry going one notch up at a time. Then when its wet drop it down a notch or two. These are the best tuning tips I can give you. If you have any more questions please let me know. Just dont go stiffening the crap out of them cuz you will spin out and possibly wreck your car.

rear firm front soft
edit - thats for track

The half of the body that you want to slide, make those stiffer.
Oversteer = rear end loosing traction
Understeer = front end loosing traction

For drag racing, you want maximum weight transfer to the rear, to aid in traction. So, soften up the rears and stiffen the fronts.


Jon

94Gtstock-newclutch said:

i just got the tokico illuminas and some steeda sport springs.

what should i set them at for drag racing?

what do i set them at to help the a$$ end from going sideways around corners? (is that under or over steer?)

thanks terry

Click to expand...

How do you like the steeda sport springs with the Illuminas??? Thats what I plan on installing very soon.

I have both along with the rest of steedas g-trac stuff. I must say for a street car that is the perfect drop to keep decent ground clerance with a sporty look. Also, I didnt notice much difference from just the springs. THe shocks, struts, lca's and uca's make more of a difference IMHO. Also, Phreak and JonGT, you guyz have conflicting remarks. I was under the impression that the softer the rear, the more squat you got (weight transfer to rear) and thus you would get better traction in the back. GTPhreak....please enlighten me on the theory behind your choices....

the theory behind it is (as i understand, no personal experience, this is just what i hear) the rear set to firm will keep the weight on the rear axle and the front set to soft will let it lift

I dont see how that would help because it would not shift weight closer to the rear tires. It would keep the weight up front, thus keeping the rear end light.

It sounds like you understand my advice, go-stang. Phreak, if you ever look at a set of drag springs, you will notice the rears are many, many times softer than the fronts. The reason is to get as much squat as possible, transferring weight over the rear tires. Another thing that aids in front lift and the resultant rear squat is removal of the antisway bar in front.


Jon

like i said thats just what i have read, but have no personal experience of what goes on. I personally would rather have a roadcourse style suspension myself

I have the 5 way Illumina drag struts up front & stock shocks in the back. For the track 1 is the best. Having the front soft allows good weight transfer, but DO NOT drive on the street like that. It makes the car very wallowy and kinda dangerous to drive. You dont want to run the rears full soft. Most guys run a 90/10 shock up front & a 70/30 out back, so a good compromise for your shocks would probably be a #2. All you can really do is experiment and see what gets you the best 60' without making the handling screwy.

How in the hell are the drag struts dangerous for the street? They are just about 30% softer than the regulars. 4 on the drag struts is about stock and 5 is slightly stiffer. 1 is ALOT softer, thats all. I run them on 5 on the street due to liking the decrease in brake dive and better handling. And, as a matter of fact I have gone autox'ing and road racing on "drag springs & tires" and it handled pretty well.