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Originally Posted by sperry
To be honest, I'm not 100% what's wrong with my suspension. I know that over the small bumps (esp. on the freeway) the car hops around like a biotch. I've tried every which way on the damper adjustment, and the softer I go the more it bounces, so I have to assume it's not overdamped, and I'm actually bouncing on the springs, not the tires.
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What spring rates are you using right now? Did you ever get any shock dyno info on these units?
Does the "bounciness" feel like the entire car is staying level but just moving vertically too much after hitting a bump, or does it feel like the car is pitching - where the back end is still rising as the front is falling?
Is the car noticeably oscillating up & down after hitting the bump (substantially underdamped), does it move & return to ride height within 1 or 2 cycles (somewhere near critical damping), or does it not come back beyond the original ride height point at all after hitting the bump (overdamped)?
Off the top of my head it sounds to me like a shock valving problem. I know we had some problems similar to that in the past with a prototype strut for the Mustangs - too much vertical motion over the regular small bumps in the road, so the car felt like it was jiggling all the time. An adjustment to the low speed damping fixed the problem.