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wrenchhead944 wrenchhead944 is offline
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Join Date: Dec 2011
Posts: 55
90 964 manual trans slipping issue

This question might sound stupid . I have worked on 911's for years . I have never been inside a 964 manual trans . I have spent some time trying to find info on this before trying here .

1990 964 manual trans .

When I got to it , it was partially apart so I could not drive it . The boss said he drove it and the clutch would slip in high gear under hard load .

I pulled the motor/trans , split the trans from the motor , pulled the clutch and it shows almost no wear .
It is not even close to the rivets . The pressure plate fingers are even , the flywheel and pressure plate show age but no signs of slippage (hot spots ect.)

I read that this trans does a power split between between the front diff and the rear cv shafts .

Does this trans have a viscous coupler or any other system that would allow it to sound like it is slipping ?

I await the replies .

Brian Thomas
Old 12-18-2017, 01:15 PM
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