Well, I don't have much to tell. The car came with lowering springs but I don't know how far it is lowered. I'd say about 1.5"..??? This helps because the car will usually move forward first then start to raise the front end but not very high. This saves time. It also keeps the car from getting all twisted on the starting line when powerbraking that much boost.
The front shocks are very worn out stockers or some type of replacements.. The rears seem to be the same except they are in decent shape. Then I run air bags, air psi: 25 DS and 36 PS. That's it.
Overall the suspension is pretty stiff except the worn out front shocks allow the front to raise quicker with the lowering springs. All sway bars are still on the car. Factory bushings, etc.
I think there are a few reasons why it 60's well but they are not great reasons:
1. Because I powerbrake it to 15psi of boost when I launch. This is the main reason.
2. My car came with a POS turbo from an International Deisel Tractor (that I didn't know about) and my car just would not run correctly under "normal" boost conditions and normal fuel pressures. So I increased boost to around 26+psi until it ran a "normal" ET. So it would "spike" to 26psi almost instantly and this is what got it through the 60' in a decent amount of time.
Now I have a stock turbo and I only ran it once down the track but I had no idea where the boost was set at (grainger valve problems) but I did launch it at 15psi but the car felt VERY lazy. It only went 1.7's) See page 3 of my Diary of a GN for complete story.
I Know it will duplicate the 1.60's once I get everything straightened out (15psi launches and around 22-23psi max boost) and it will be because of the high boost launches.
Probably not the answers you were looking for but that's all of them.
I have 2 other friends with original suspension cars w/ air bags, that leave with high boost 15psi+ and also run 1.5's - 1.60's. Concentrate on high boost launches if you don't mind the extra abuse.
HTH's
ks
I want to change the rear springs for now and replace the shocks all around. Will just heavy duty shocks be better? This is a 95% street driven car and want to remain that way. I'm not really wanting 90/10 shocks. Any ideas what rear springs to get and where from?
