What Clucth Should I Put In?

North Coast Cab · North Coast Cab's Garage

Winter project this year will consist of the first engine drop, some routine maintenance and a new clucth. What type of clutch should I install?

I use it for a few autocrosses per year and I just purchased a roll bar so I can do some DE's.

I see the oem kit, the Sachs power clutch kit, and the Center Force kit. I'm sure there are others.

What should I install, or is there a preferred mix and match option to attain the best set-up for my driving?

I intend to to replace everything, cable, bearing, fork etc.

JG

P.S. I know it's not winter but I'm stockpiling parts early to reduce winter sticker shock.

North Coast Cab · North Coast Cab's Garage

Bump.
Someone must have some input.
The Sachs US headquarters is only 2 miles from my house. I may start rummaging through their garbage shorly.

JG

TimT · 09-01-2003, 01:06 PM

See if you can get an RSR clutch, all aluminum, more clamping power, slightly more leg effort ( heard these are NLA). If not the Sachs PowerKit would be fine.

Carrera Sled · 09-01-2003, 01:13 PM

I just put a stock Sachs kit in my '85, but not long ago so I can't tell you what kind of life to expect. I've never noticed any slippage under any hard acceleration. (Stock engine). I actually went into the clutch because the throwout bearing failed, along with a few broken fingers on the pressure plate diaphragm spring; it actually pulled it right out of the pressure plate. I was surprised to see that the disc looked like it had about 100 miles or so (<.005") left before it wore down to the rivets! I guess these don't give any warning (i.e. slippage) before they tear into the flywheel & pressure plate! This is my first 911 and clutch work on one.

Formerly Steve Wilkinson · 09-01-2003, 03:06 PM

If you're gonna go to the trouble, put in the lightest, best clutch (and flywheel, why not) that you can. I'm running a Truman aluminum flywheel and a Sachs (as I remember...) aluminum clutch. People will tell you that with such a setup you wont' be able to get the car off the line without stalling, but I find my wife's Boxster to be more clutch-sensitive than my '83 SC with a finicky, carbureted engine and aluminum clutch.

Stephan

Bill Verburg · Bill Verburg's Garage

The Sachs Power clutch kit is a lot of bang for the buck. It will feel like stock but grip better. The weight is a non issue, aluminum or steel won't matter much. It's the 964/993 w/ 50# clutch/flywheels going down to 12 or so # that will have an issue.

Some of the carbon segmented clutches don't take kindly to slipping, they can be more like an on/off switch

350HP930 · 09-01-2003, 03:40 PM

A few years ago I replaced my pressure plate with the OEM sachs unit and my old disk with the earlier sachs 930 disk that had the spring center section instead of the late model rubber one.

When I dropped my motor a few months ago everything still looked as good as new after almost 40K miles of use with the exception of a lot of dust, but I go pretty easy on my clutches.