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240K on an original 944 NA clutch?

Is it possible/unlikely/highly unlikely to get 240,000 miles out of an original clutch?
It has a rubber-centered disc with a 10/85 date (I think its the date stamped on the disc). I acquired the '86 NA in 98 with 115k miles. PO kept meticulous records with no drive-train work. It put on 125k up until 2011, with no clutch work (was anxiously awaiting the day when it went). Anyway, the flywheel virtually shows no significant wear (no scoring or worn ridge). The rubber disc still appears to have surface left with no grooves/etc. The inner rubber disc is showing a little sign of cracking and deterioration. Anyway, with all the stuff I remember about 'exploding 944 rubber clutches', I'm wondering what's up? Can post pics of all parts if that would be useful. Thanks for a great forum
Joe
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Old 10-10-2011, 01:37 PM
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Highly unlikely,I suspect it was changed maybe 150k miles ago with another rubber-centered NOS clutch.
Old 10-10-2011, 01:57 PM
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if the car was babied and gently driven its whole life, i don't see why not.
Old 10-10-2011, 01:59 PM
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Didn't happen. I acquired it with 115k and with it all PO's meticulous records (PO was an engineer-felt comfortable at the time about the previous maintanence done). I did ALL the work during the rest of the time. Hmmm!

It saw one a/x season when the 911 was down. It was my daily driver from 1998 thru Feb 2011, (125,000 miles) and it wasn't driven very hard. Maybe this is more common than I thought. Great car -great company!!
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Old 10-10-2011, 02:05 PM
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1988 944 2.5L 8-v NA 301k
 
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Quote:
Originally Posted by joepfs View Post
Didn't happen. I acquired it with 115k and with it all PO's meticulous records
Howdy...
Couple months back I debated whther my 234k is on the factory original clutch...
We discussed it and all felt ( save V2 I think ) that no way a rubber-centered could've outlasted the delamination/deterioration effect that prompted SACHS going to spring-centered.

Further, I even called SACHS USA and an engineer really felt that 23 years of normal (non-race/double-clutching) use would still result in the rubber aging/oxidating by now....

My 20 years of service records shows NO clutch work...
Touch wood but the pedal still feels great..
Clutch Window shows plate has used 26mm of the 34mm avail.


So I still wonder...
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Old 10-10-2011, 05:37 PM
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Hot oily environment and father time are not the best friends to the rubber in the center of the OEM clutch. Not very likely that the clutch survived 200+ miles, no matter how it's been driven.
Old 10-10-2011, 07:28 PM
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the rubber clutch plate

My car had 101,000kms (around 60,000mls) @ the engine swap,now done 104,000,due to the condition of the original rubber centred plate I refitted it,there was plenty of lining left and minimal deflection of the rubber centre, some fail and some last,but this car could have had a NOS plate fitted to do this distance otherwise it wouldn't happen IMHO.
By the way I did repack my thrust bearing and overhaul the clutch slave cylinder ,better than ever.
The original design was to dampen noise/vibration from the transaxle did it work
Rubber centred clutches haven't worked for Porsche in the past ,thats why the replacement for this model is a spring centred one.
Old 10-11-2011, 12:39 AM
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I just finally had to replace the rubber centered clutch in my '84.

I couldn't guarantee that the past driver's have been that gentle, but it did have the advantage of low miles. It had 10% clutch life left a few years ago, rubber center went first about 15K(no working odo, guessing) miles after I last checked.

If my clutch made it age wise a month shy of 27 years, its possible for it to survive as far as age goes, but how much use would of affected it, I don't know. You might want to solve the mystery and dig up contact info on the PO and ask about it.
Old 10-11-2011, 03:39 AM
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The average lifespan of a "non-beat upon" clutch is around 125K.

That's indeed a rarity if yours went 2x the average. But it is NOT outside the realm of possibility. If you consider a scenario in which all of the PO's had a many-mile commute to work, but lived right off of the freeway exit, and the job they were going to was also just off an exit on the freeway. And maybe they were also all low-rpm, baby-shifting slow-pokers!

There it is, the perfect recipe for exactly what you describe. Maybe the nay-sayers should not be so quick to jump to conclusions.
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Last edited by wild man; 10-11-2011 at 04:14 AM..
Old 10-11-2011, 03:59 AM
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Annotation to my last post:

Conversely, if you take ONLY those who live in the city, where say 90% of the miles traveled in the car are city miles (lots of shifting), the average clutch life drops down to 90K miles or less.
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>gray 89 951S - K27/8, MAF, 3" intake, 3" exhaust w/separate waste pipe, 55# inj, late cam; >red 87 924S - chip, K&N, punched-out cat&muffler >black 80 924 - (sold) >maroon 77 924 - auto (sold)
Old 10-11-2011, 04:11 AM
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The average lifespan of a "non-beat upon" clutch is around 125K.

That's a rarity if yours went 2x the average. But it is NOT outside the realm of possibility. If you consider a scenario in which all of the PO's had a many-mile commute to work, but lived right off of the freeway exit, and the job they were going to was also just off an exit on the freeway. And maybe they were also all low-rpm, baby-shifting slow-pokers!

There it is, the perfect recipe for exactly what you describe. Maybe the nay-sayers should not be so quick to jump to conclusions.
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>gray 89 951S - K27/8, MAF, 3" intake, 3" exhaust w/separate waste pipe, 55# inj, late cam; >red 87 924S - chip, K&N, punched-out cat&muffler >black 80 924 - (sold) >maroon 77 924 - auto (sold)
Old 10-11-2011, 04:16 AM
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Mine had 192K on the original clutch
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Old 10-11-2011, 04:54 AM
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Don't know if my clutch is original or not, but my mechanic was sayingto replace it because of the rubber clutch. He also said that they stoped producing the rubber clutch in the late '80's so it very well could be the original clutch. My car has 194xxx on the odometer, which wasn't working when I bought the car
Old 10-11-2011, 05:43 AM
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If you're still running the rubber-centered disc, make sure that you never hit the rev limiter. That's when mine went to pieces. But I was under pressure, with traffic bearing down on me after I pulled a U-turn on the highway.
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>gray 89 951S - K27/8, MAF, 3" intake, 3" exhaust w/separate waste pipe, 55# inj, late cam; >red 87 924S - chip, K&N, punched-out cat&muffler >black 80 924 - (sold) >maroon 77 924 - auto (sold)
Old 10-11-2011, 06:51 AM
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Great comments, thanks everyone. I've come to realize that this daily driver reached 240k because I never really drove it hard. It never compared to my '73 911, so I never pushed it (probably because it never seemed to be able to get out of it's way!). Rev limiter? I bet she never got within sniffin' distance of that concept! Didn't mean to talk it down, but I guess I treated it like a lux sports car! Damn 911! It ruined it for me. HOWEVER, It sure was beautiful, great lines, and always got great comments. From what I've seen (and read), I guess that rubber exploding clutch is capable is high miles-if it's babied. Great machine!
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Old 10-11-2011, 02:37 PM
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