Coilover Recommendations

[dontlifttoshift]

It is the springs job to allow the suspension to move and absorb the bump. It is the shocks job to control the speed at which the spring and suspension move. To divide it up even further, compression controls the movement of the unsprung weight and rebound controls the movement of the sprung weight.

This whole thread is really about NVH, though, and there is so much more to it. Britt touched on it earlier, with no compliance in the front suspension bushings, the initial impact of the tire hitting the bump is transferred directly into the chassis before the shock or spring has even started to move. That is a thing you will never be able to get away from with most pro-touring suspensions. If you ever get a chance to compare Roadster Shops FastTrack chassis to their RideLine chassis pay close attention to the bushings that they use in all the control arms. The RideLine isn't delrin.

I still think ridetech are the best shocks for money. Period. I have made them work very well in several applications but there is something in their valving that is different than even off the shelf JRi shocks, let alone the custom built ones from Ultimate Performance* JRis don't hammer over expansion joints or cracks in the road to the extent that the ridetech's do. This especially shows up at lower vehicle speeds, less than 50 mph. The difference between the two shocks is more noticeable the slower you go. Even triple adjustable ridetech shocks with the high and low speed adjusters on the canister have this issue.

It doesn't really show up on the dyno sheets either, I have made that comparison and the numbers and curves are similar enough to me.......but there are soooo many ways to make force numbers look the same on the dyno and act completely different in use.



To answer CPD's question, I don't think it is a function of too little compression valving or spring rate for that matter. It is a lack of compliance in the suspension bushings coupled with the way RideTech makes their compression numbers.....which is fine for probably 95% of the aftermarket.


*The last couple times I talked to JJ @ https://upspeedshop.com/ He reminded me that he will also revalve shocks other than JRi. I have never used him for that so I can't say if this will solve CPD's issue or not but I think it is certainly worth a call.