I currently have the full SPT suspension set up. I like it, it drives well, and looks like you could drop from an airplane with damaging the struts. But there's one thing....it ain't low enough. I just want to get ride of a bit of that fender gap. I was wondering if it would be a good match to use the ground control coil over sleave (sp?) with the STi struts? I have done a search here and it seems that the ride quality is all dependent on the spring rate that you choose. I was thinking that using the same spring rate as the STi(SPT) ones would be a starting point.

Any thoughts on this setup? and comments on the quality of the ground control kit?

thanks in advance

 

I would even lower the spring rates a bit if I were to order them...if you lower the spring in the coilover sleeve then it compresses it...wouldn't that increase the rate effectively making them closer to the actual spring rates you're looking for? I'm not positive but I wanted GC's and went with Skunk2's...no they aren't on yet so don't ask how they handle Soon I'll post on it!

WRX34

 

any one else with an opinion?

From what I have seen, they have been suggestiong the KYB AGX shocks for this application. But on their webist there is a clear picture of one of their setups on a STi (Red, maybe Pink) Shock.

 

This is what I have come to understand about this topic through these boards. Some one please correct me if I'm wrong.

You are never supposed to use the GC setup (or any other CO setup for that matter) to compress the spring. In order to alter the height of the car, you use the threads on the shock body to compress the shock in its range of travel if you want to lower the car and vice versa if you want to raise it. You then proceed to adjust the lower perches so that the spring is just snug and not compressed. So to answer your question, you would not want to adjust spring rates to acccomodate for compression at static ride height.

 

From the way I look at it, there shouldn't be a way to compress the spring in one of these adjustable perch type setups. If you rotate it up, it will just lengthen the shock. If you rotate it down it will compress the shock, but the springs that are included in these systems, seem to be too short to compress beyond the limit of the perch - to the point of compression.

At least thats the way I have understood the way they are made.