Quote:
More on this subject. I am running a 1990 ITA Civic with Koni shortend, and valved. The problem is bottoming the suspension, specifically the left front upper balljoint hitting the tower. Hit with 1000# springs in front, no front sway, progressive in back with 800# springs, 5 1/2 " ride height. Springs to stiff car bounced. Raised car to 6 1/4 dropped to 800# front and 600 # back. Still hit left front balljoint but not as bad.
I would like to keep this spring setup but the car will not rotate under these conditions. I don't want to put the front bar on because of a bad push. If I lower the car, hence lower the CG the car should not roll as much but I am afraid of bottoming again. This happens on hard rights. How can I fix? I cannot drastically change corner weights but would this help. HAs anyone installed sway so that it does not catch until car rolls to a certain point? Might be snappy when that occurs. Thoughts?
Rick Jarrett
ITA racer
[/b]
Sounds to me like the issue isn't in spring rate but instead in bumpstop length. How much of the stock bumpstop do you have on the front left corner? You should be using just over half of it... any less and if you hit a big enough bump, it will cause the upper control arm to hit the frame. FWIW, I had my car set up by OPM and am running 500#F spings without any push or bottoming problems (also on shortened/revalved Koni's) with no front bar.