Stuttgart996

So I installed the bilstein coilovers that are sold by paragon and am having problems with the rear ride height.

I have them all the way turned down on the coilover adjustment and they still are sitting higher that my koni sport shocks. I have adjusted the eccentric bolt all the way down but this only moved them a tiny bit since I had adjusted them before putting the konis on.

I am running a 968 mo30 sway in the rear and still have stock torison bars which I would like to keep in.

Any help would be appreciated, it seems weird to me that I cant get coilovers to go any lower.

JohnKoaWood

What spring rates did you put on the rears?

AND

Have you driven any to allow them to settle? The rear will settle once the car is driven!

Stuttgart996

yes i have let them settle
i believe they are 500 spring rate in the rear

Oddjob

Have to reindex the t-bars when running coilovers, even at very low helper spring rates.

Might be able to run real short springs, 6" or so, so the car is sitting all on the torsion bars at ride height and the helpers are not compressed, but that is not a good setup for various reasons.

JohnKoaWood

Not to mention 500 lb springs, + torsion bars would need a 450lb+ front spring... is this for a track use only car????

bw993

Your rear spring rate is too high for use with torsion bars. If you have the stock TB in place your total effective spring rate in rear based on some rough calculations is (0.40 * spring + torsion bar) = ~350#. This means your front springs should be 583# to get an equivalent effective spring rate in the front. Usually the max rear springs for a street car running with TB is ~250#.

Stuttgart996

So if I buy 250 lb springs from paragon will this drop the car around a half inch

Oddjob

Well first - did you buy the full front & rear bilstein setup from paragon? Or did you just get the rear coilover shocks? If just the rears, what struts are you running in front? And either way, what spring rates are you running on the front?

reno808

cigga call me i have the same setup as u

JustinL

I noticed the same thing. Even completely unweighted (springs rattling around freely) the car sits slightly higher. I run the factory Tbars with 250lb springs that have no preload when the car is still and level. This setup gives me a good balance on the track, but is very rough on the street.