Tom Pultz

The rotors should just be from a stock Porsche 993TT. You remove the iron hats and install the alloy versions to get the proper offset.

944CS

why are you going stiffer in the rear?

Mike1982

The Pagid pads, do they only have track pads or do they have some for the road you can use? I know when I get into track event more I will go with them, only heard great things (but the price).

aribop

the guys on the 993TT board recommended the blues for combination street/track driving. They have different compounds to suit your needs.

aribop

Tom, Isn't the offset wrong using these rotors?

shiners780

I wonder about this also. I know several people with torsion bars removed using coilovers. They all use approximately 15% more spring in the front than the rear. For example, 500 pound rear with 575 pound front.

However, Aribop isn't the first one I have heard mention much beefier springs in back either. Unless he's talking about effective rate rather than actual rate? Aribop can you clarify, as I am curious. Thanks!

ninefiveone

911 3.6 turbo rotors are a straight bolt on for any 944t using big reds except '86 cars. Rotors don't change offset. The reason they don't work on '86 cars is because of the hub design.

a 500# spring in the rear with no torsion bar has an effective rate of 281#

smlporsche

I'm about to go to a full set of Leda coilovers on my dedicated track car. In talking to Karl with the car down to 2700#'s he has reccomended 450# at all 4 corners. That is with the torsion bars removed. According to him (and he has one of the fastest S2's on the planet) this will allow the car to rotate better through the corners. I know guys that run much higher spring rates on their race cars but until I get to that level of ability I think the 450# springs will be great.

aribop

...and since the fronts are only 90% effective, the 300# up there is equivaloent to 270# effective which evens out quite nicely.

shiners780

So those people that run 575F/500R, they're talking about effective rate, not actual rate? If those spring rate values are stamped on the spring, wouldn't those be actual rates? If that's the case, the effective rate of the front will be much greater than that of the rear. I know several club racers that run 15% more spring on the front than the rear, using the rates stamped on the springs. I understand the concept between actual vs effective rates. Edumacate me please, cause I'm confused.

ninefiveone

Springs are rated in lbs required to compress the spring an inch (or something like that)

But no spring is acting at the wheel. They're always on a suspension arm, a link, etc. So think back to your physics class and consider how levers work. That's what creates the difference between the spring's actual rate and it's effective rate. The effective rate is the spring's force at the wheel and is all that matters.

http://www.tech-session.com/kb/index...x_v2&id=22&c=4

People running 575F/500R are running with the torsion bars still in place. Most cars I've seen run about a 85% ratio F/R. So 575F/500R with the torsion bars in place gets you about 518F/407R for a rate of 78%. That assumes a 23.5 torsion bar which might be wrong. I don't remember what the stock torsion bar size is.

shiners780

Sorry, I should have specified, those 575/500 rates I have seen have been with the torsion bars removed. That's why I'm confused.

ninefiveone

Either they're talking effective rate, or they really like understeering cars.

I don't see any other alternatives.