When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Have a 1987 944 Turbo. 180k. Been sitting in garage since 2005.
Previous owner replaced clutch in 1997 with original porsche part.
Questions-
* If the 1997 clutch job was an OE part, does it necessarily have that terrible rubber coupler I've heard so much about?
* Clutch definitely works (says previous owner, friend, with no reason to fib). Should I do a preemptive replacement? Car is currently on stands with exhaust, turbo, suspension, axles completely off. Trans and driveshaft are installed.
* What's the clutch du jour? Primarily a track car/mountain sunday drive car. No plans for 'mad horsepower yo'.
* OE Parts with rubber coupler thing sounds like a major do-not-want. Internet wisdom agrees?
Turbos didn't use the rubber center disc, that was just for the NA cars. The turbos did have a disc that was problematic though in that they had a disc that had some small springs that would fall out and cause problems. Tough call. Normally I'd say run it until it fails. If you do replace, use the HD aka "Cup" disc or the 930 disc with stock Sachs pressure plate and throw out bearing.
I would estimate about 25 mm between the face of the elongated hemisphere to the ID of the bore, measured at the point on the ID which would intersect the long axis of the elongated hemisphere, passing through the center of the bore.
I'd run it... if it slips or the throwout bearing is noisy, then replace. It's a pretty involved job so it may not be something you would want to do on a whim. If it does fail, the odds of it taking out other parts are pretty slim.
I'd run it... if it slips or the throwout bearing is noisy, then replace. It's a pretty involved job so it may not be something you would want to do on a whim. If it does fail, the odds of it taking out other parts are pretty slim.
As if I didn't already have a year-long history of fixing and upgrading stuff on my 951 resto project, I just noticed the T.O. bearing is making noise. Great! Now I have to pull the intake manifold AGAIN! Turbo cars are so much fun.
Dear Dyno..Having had that same pblm on another car, I can tell you that the the clutch will be pretty much inop and unless you're pretty good at gear synchro speeds, you won't be able to shift well and GOD help you when you need to stop and you're slamming it into neutral, and trying to take off from a light...jerky jerky jerky...rev rev rev..
I would estimate about 25 mm between the face of the elongated hemisphere to the ID of the bore, measured at the point on the ID which would intersect the long axis of the elongated hemisphere, passing through the center of the bore.
Does this mean anything to anyone?
Howdy.. yes that means something to me.
Looks like your 23mm from front of bore to face of your clutch slave cylinder piston equals about 32% wear so far, ya?
Calculation:
If 18mm is 0% wear;
then your 23mm is 5mm of wear: 23 - 18 = 5;
Since 34 mm equals 100% wear, the lifespan is a net 16mm.
03-20-2016, 09:04 PM
Preemptive clutch?
