Just talked with Bilstein East for a bit...

They will be offering a bleed-style single adjustable shafts. They appear to be the rebound adjustable version of the double-adjustable MDS hardware. Right now they only have 8" version but hope to have more lengths by this summer. The shafts use their 12mm pistons/shims. User price will likely be somewhere around $275 per shaft, according to Bilstein. The unfortunate part is that the adjuster mechanism is built into the spherical bearing upper mount...so, there would be some redesign/machining needed to fit it to a typical S2000 setup.

More info... (link taken from Dennis Grant's site): PRI 2010 - Bilstein adjustable shafts

 

I just wanted to bump this old thread to say two things. One, Mac is an awesome guy and gave me some great advice. And two, if you have PSS9s and autocross, buy stiffer springs for them immediately. I owned my car a year before swapping in stiffer springs (Swift springs 12k/10k) and up until doing that, most autocrosses were frustrating. Now I can get out there and have fun and be relatively competitive! This should have been my first mod. Heck they don't even feel too bad on the streets.

Thanks Macr88!

 

Did you revalve them or no?

 

Interesting for me to read this thread since I am the owner of Mac's Bilsteins from this thread but I had never seen the thread before. And yeah, Mac is an S2Ki legend.

We did another revision to the rear, adding more low speed compression, which helped to reduce the rear end pogo. We also messed around with bump stops and found we can use very small ones and never push into them since the rear actually has plenty of travel even without modifying the shock body. The next step is a bit more rear rebound, then update the fronts to match.

 

you wouldnt happen to have shock dynos of the new setup would you thomsbrain?

 

Check into a set of JRZ Pro's, its 1/2 the price of these and is smooth on the road and stiff as hell for the track. I have them on my track car and would gladly run them on my street S2000 if it was my DD. They have the same interns as Motons but are a bit cheaper. Takes about 3 weeks for them to be build but you won't be disappointed with - guarenteed. IMHO

http://scienceofspeed.com/products/s...00/JRZ/RS_Pro/

 

Not yet but we are planning to finish up the next revalve in early September if possible and if I can get a copy of the dyno I will. I'm also curious to see it.

 

For those that went with stiffer springs on these, did they modify the spring perches to fit 2.5" ID springs? What rates are the included springs with the coilovers?

 

Not yet, but I plan on doing so over the winter.


I did not. Swift sells 70mm springs but you won't have nearly as many options as a 2.5" spring. I don't remember the exact spring rates on the included Bilstein springs... something like 350/280.

 

When I was using Bilsteins, yes, I machined the lower perches for 2.5" ID springs. The standard PSS/PSS9 rates are 345 lb/in front, 285 lb/in rear (per Bilstein).