mikey_audiogeek

http://www.lindseyracing.com/LR/Pors...RE-SUS-01.html

+ new torsion bars = less than $1800 total

Cheers,
Mike

pontifex4

To echo what others have said, I think that 200-220 would be about right. I used Weltmeister part #915723 on a set of Konis, coupled to a drop in the rear (using the ride height eccentrics) on my previous car, and it did everything well. Far better than the factory M474 set on my current car. Expect a fair amount of lowering from those springs, though, particularly on a Turbo. I think it was more like 1.5" in my case than their stated 1.25".

TexasRider

Thank you Mike. I saw that listed on the site, but I looked at the regular Bilstein struts, then on to the Escort Cup set up which was more like the $2500 or so all in. I'll have to talk with Lindsey about this FireHawk when I next get them on the line.

On the motorcycles we have had the Ohlins - but the price is really up there on these babys for the Porsche. Yikes.

TexasRider

I am going to try to keep close to my stock ride height. Just personal preference. But thanks for the heads up on that set up.

One thing I did do today to gauge the suspension in both dampening and rebound a bit, like we always did for years in motorcycle racing, was to push and compress the suspension and gauge (observe) it and the corresponding rebound. On the front end, and really on both sides the compression is stout and hard to compress. And of course only a bit of overall compression on the car.

On the rear it is a different story. The rear is considerably softer and the rebound is fairly rapd and full, with the car compressing more, even in the front.

I havent measuread all four corners of the car, and I was waiting unitl I find a new shop (to replace Pro Technik here is out of business) to do the work, set uo the suspension, and corner balance etc. But the car appears level overall now. But as I say the front is stiff. I will look through the records for what is in there now.

One thing I want to accomplish is to have the whole car working smoothly through out the travel.

Crackership

FWIW, I have an Alfa Romeo GTV6 with the RS Racing coil over kit on it...

I know it's not a 944/951, but they actually drive very similarly... so similarly, in fact that Hemmings Sport and Exotic Car magazine did a comparison article between a GTV6 and a 944 in their Jan 09 issue, and basically what they said was that the 944 was a bit better of a highway car, but the GTV6 was a bit more fun on the twistys... but other than that, they're very similar. and from my experience, that's about right... the Alfa has a 4:11 final drive, and it's not very comfortable, so it kinda sucks on the highway, but it's a bit more "playful" on the twisty roads. Anyway, point being, they're both front-engine, rear-transaxle cars with almost the exact same weight distribution... the Alfa is a few hundred pounds lighter though at 2509lb.

I'm getting to the point, I promise.

The RS Racing coil over kit has 115kg springs in the front which are used in addition to the approx 100kg torsion bars that are the factory front spring... now, Ron Simons (the guy who owns RS Racing and designed the kit) says that it is impossible to perfectly calculate the effective spring rate wit the combination of the coil spring and the torsion bar, but it's somewhere in the neighborhood of 185 - 200 kg, which... if my non-mechanical engineer math is right, is somewhere between 407 - 440 lb.

The car was borderline tolerable on the street until I replaced every bushing I could with a heim-joint, and those that I couldn't with poly... and then I put a fixed Sparco bucket seat in it.... now it knocks my teeth out on expansion joints in the highway when I'm driving it to and from the track.

After reading this back, it occurs to me that I really haven't supplied any useful information, but it's late, I'm tired, and I'm hitting "post" anyway.

-Dave

333pg333

Aryton Senna wouldn't notice the difference between 200 and 225. Our cars had very soft springs from the factory. 225 is still very soft. Cup Cars run on 1500lb+ springs to give you a comparison. I've got 800/900 and while it's primarily a track car you can get away with higher rated springs depending on how your shock works. I've ridden in a 944 with something like 300lb all round and it rode harsher than my car, so it's not an absolute just going off the lb rate. The dampers really can make a huge difference. I can't help myself, if you're looking in the $2k mark you really should try the KW V3s for a great road/track setup. They ride like a dream and handle great. Perfect for these level of cars.

Funn944

I have Koni sports all around, Stage II Welt sways front and rear. Stock torsion bars in rear, lowered with the eccentrics as far as it would go (3/4 - 1" ) You should also talk to the guys at Ground Control. I got my struts, shocks, springs, camber plates from them, as a package deal a few years ago.They were really good guys to deal with.

mikey_audiogeek

+1

Mike