Ok, this question is for those with coilovers.

If you have been following the board you know our rules don't allow me to have shocks with adjustable spring perch. So I have to get any kind of shock but the spring perch has to be fixed. Koni told me their application wont be out until next year.

The first option is to get custom shocks (moton, Koni) with fixed spring perches but the cost is very high and if I move to GT next year I can't adjust height.

Second option is buying a set of Bilsteins ($900) set the height and then cover the treads with some kind of filler and paint them. I would only do this with the Bilsteins because they are cheap but I have my doubts about improvements over stock for racing use.

The third option is using the racing shock Ground Control sells. I have never heard anything about this shock but they have an application for the S2K and they can do the fix spring perch. The specs on the shock sound pretty good (double adjustable, aluminum, etc). Cost: $390 per shock. So it isn't that high of a price compare to Koni's or Moton's.

So now come the big question: Since they are going to fix the spring perch I could move it compared to the stock location. Or I could go with the stock location (which could be better in case Tech inspector gets into details).

What would you do? Can anybody share the spring perch height on their setup compare to the lower attachment point?

Any help is greatly appreciated

 

I have custom Koni

 

Thanks Cdelena!

I think I'm going with the Ground Control shocks keeping the perch at the stock location and maybe install a set of KG/MM racing springs.

 

Pepe,

I've heard good and bad things about these shocks. One thing that comes to mind is that their new design requires very, very, tight tolerances to operate properly. Testing on a shock dyno is a must. Since, its rebuildable no problem... maybe? Again, THIS IS ALL HEARSAY. If you do try it, do let us know how it turns out. I'm inclined to purchase these shocks as well.

 

I think I'm going to give them a shot. They cost just a little under $1,600 for a set of double adjustable. Not bad. But the bottom line is how they perform. One good thing is that they have the S2000 application ready so you don't have to send the stock shocks. Turn around time is two weeks right now.

 

Ok.
Decided to take a leap of faith and ordered a set of Advance Design shocks with springs from Ground Control.
Total cost was under $1,800.

Will let everyone knows when we get them in about three weeks.

 

I was hoping that somebody would answer your post, at Under the Hood forum. When I inquired with Advance Design, in October 2000, they said they have 4 or 5 S2000s equipped with their shocks. I guess none of those owners posts here. Ask Advance Design for referrals from S2000 owners.

I was informed by another racing shock specialist, that he had a client who used the ground control units. However, returned them because they did not perform when tested with a shock dyno. He also commented that with their new shock design which required extremely tight tolerances and precision machining. Its expensive to produce high precision CONSISTENTLY, so how come prices are very reasonable? Again, this is all hearsay. I hope everything works out.

 

They are here and look really good.



The are aluminum with the lower base made out of billet aluminum. Adjustment is done at the top for both rebound and compression. Front springs Eibach ERS 650LBS rear Eibach ERS 500 LBS. Total cost around $1,870.

I was temptet to install these on my daily driver but too much work. I still have to modify the top shock bases. Center bore of the stocks is around 10mm and these are 14mm. Will see if I can install them on the race car during the week or next weekend with a test at the track in about two weeks.