Cole

This started off yesterday when we figured out my clutch fork was broken.

I have read nearly every thread here about broken or bent forks.

What I have discovered is that there are two part numbers. One that starts with 931 for 924/944 cars and one that starts with 951 for 951s.

The forks look nearly identical so they must be made out of different material/heat treat etc.

The fork I took out of my car has the 931 part number. I looked at a few on ebay listed as "used 95" clutch forks. Many have the 931 part number.

I know a new 951 fork is about $350-$400. I have not found a 931 numbered fork yet to compare it too. (so if someone has a link please post it)

I *think* what has happened is that as clutches were replaced in these cars over the years 951 forks got replaced with 931 forks. Probably for a cheaper part, or just misreading the parts catalog.

I wonder how many of the clutch fork failures in 951s are actually 931 part numbered forks?? Seems there are several failures.

Anyone that has broken a fork still have it laying around and care to check the part number on it??


I want something that will last in my car. I would be willing to spend the $400 on a new 951 fork if there is reason to believe it will actually last. If we can determine how many of these failures were 931 parts and not 951 parts this would be helpful. Maybe we have had the upgrade under our noses all the time!!

KuHL 951

Here's a pic of the 951 (top) and 931 forks. I can't confirm it but the smooth one (951) definitely looks forged while the the NA version appears cast. This is just my opinion but I see a lot of forged components at work and they never have the casting sand marks like the 931 style.

Cole

My fork looks like the top one but definately has a 931 part number

lart951

Some maducation for you my friend.

https://rennlist.com/forums/944-turb...ification.html

KuHL 951

Those aren't my pics so I assumed the author was correct on his part numbers. My forged comment still stands for the top one though. I have 2- 86 951 bellhousings here with forks removed, both have the 931 # and are smooth. With the wear patterns on the tips I would say both are original. It has me wondering if the 931 fork was forged since it carried a heavier PP and was carried into the 951 the first production year? AFAIK no one has ever seen a 951 numbered fork.

lart951

the real 931 fork it's stronger I have one laying around let me look for

Cole

Would anyone be interested in a true upgraded fork?

Cole

Hmmm, Pics and a part number would be cool.


At this point I'm ready to just spend the big money for a new one and hope that the failure is mostly a metal fatigue problem.

lart951

the new will still be 931 series. Is you kep stage II?

Cole

Just their basic aluminum pressure plate. Rated at 600lbs of torque. Can't find anything on their site to distinguish between "stages"

Jeff N.

Seems like there is some risk with with the KEP stage two plates. A guy up here had his fork fail not too long after he went to a KEP2 plate. I think I've read of other cases of this as well.

Steve - re the two fork versions, I'm wondering if that "cast" looking for isn't really the very early version of the 944 for that Markus Blazak told me about. Supposedly there is a very early fork from the 944 that is different from the later forks. Release arm length is just a bit shorter. That one sure looks a bit shorter in the pic....

Markus also told me that only difference between a standard 944 fork and a turbo fork is the 1mm width difference of the forks for larger t/o bearing. He can convert the non-turbo fork to the turbo version. He can't do anything with the early ones....

docwyte

Hope I don't have a problem with my KEP Stage 1 PP...

Smudo

After reading numerous threads that many experienced broken clutch forks in combination with KEP PP, just ordered used 944 NA fork from Lart. I understand that it is from cast metal. Can you add additional material on the outside to add some strength (e.g. like you can weld also cast aluminium rims)?

Smudo

By the way - new OEM one here in Europe costs 540 EUR + shipping ...