Originally Posted by
stout
Very cool car.
Everyone has their opinions, and dampers/suspension setups can be super subjective. Trick is, you really only want to do it once.
Personally, the green Bilstein HDs I was talked into leave me wishing I had stuck with Koni reds. The Bilsteins are fine once you're over 50~ mph or so, and the way the car rolls into a bend is nice, but the ride at anything under 50 mph is "jiggly" with a ton of up-down body movement that just wasn't there before with Koni reds. From what I understand, Koni yellows are worse.
Bilsteins can be made really nice, but you need someone who knows what they're doing on the revalve. Years ago, I did a track test with Bilstein Sports off the shelf back to back with revalved Bilstein Sports in two setups in the same 911 SC at Sears Point. The difference was night and day between off the shelf and the first revalve—car felt 25 years newer and was so much nicer and more confidence inspiring. I have since driven several air-cooled 911 road cars with re-valved Bilsteins that were just wonderful, and have wondered about having my HDs revalved.
If I had it to do over again, however, I'd have rebuilt a set of Koni reds—unless, that is, Bilstein has changed its damping philosophy more recently. YMMV, and I am sure others will weigh in.