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Registered
Join Date: Mar 2012
Location: Ormond Beach, FL.
Posts: 436
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blown rubber center clutch
Hi all,
I am new to 911s and have a very nice 1988 Carrera. Last week I had a rubber center clutch failure. I logged on to the forum and promptly learned more than I wanted to know about this issue. I read several threads for and against replacing the OE clutch with a Sachs spring center clutch. So, just for the record in case someone is keeping track of this, I decided for the spring clutch. Below are photos of the rubber center clutch for those that can't help but to look. Stay tuned, after the car is back on the road I'll post my opinion as to the noise level of the spring clutch Vs. the rubber clutch.  
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06-18-2012, 11:53 AM
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Registered
Join Date: May 2011
Posts: 7,245
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Welcome to the club! I bought my 1979 SC new, drove it for a few years and the rubber clutch totally disintegrated! My mechanic at the time knew the problem and changed it to the Carrera spring clucth. A little more delicate when dropping into gears but not bad. Never had a problem since.
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79 SC Targa 72 T Targa Sold 68 T Coupe Sold 65 912 Coupe Sold 62 356B Coupe Sold |
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06-18-2012, 12:00 PM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,141
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You still have dampening from the spring-loaded discs. I wouldn't use a rubber disc due to the inevitable, but that's me.
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06-18-2012, 12:09 PM
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Easily Confused
Join Date: Feb 2005
Location: Republic of Texas
Posts: 431
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I went with the spring route when the rubber gave up on my '89. I notice a little more noise from the gear box but nothing to complain about.
I would much prefer a better clutch with noise than the rubber unit with a narrow lifespan.
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Scott C. '08 Cayenne GTS 6MT : '89 Targa GP White/Black - "Oliver's Car" : '11 Mitsu Evo X : '08 Lexus IS350 F-Sport : '01 Toyota Sequoia : 1998 Yamaha V-max : 1979 BMW R65 |
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06-18-2012, 12:27 PM
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87 - 911
Join Date: Nov 2010
Location: Ontario, Canada
Posts: 200
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Changed out the rubber center clutch when the motor was out for a rebuild. After reading about the rubber center failures it seemed a good "while you're in there" up grade.
I notice some increased engagement harshness but only because I drove with the rubber center for a couple of years. No one else riding in the car has ever commented on it. As others have noted, better to go with reliability and a touch more harshness, it is after all a 911. |
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06-18-2012, 02:03 PM
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Registered
Join Date: Mar 2012
Location: Ormond Beach, FL.
Posts: 436
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Hi all,
I picked up the car yesterday after having the clutch replaced. As stated previously I decided to go with a spring clutch. I have to confess that I was a bit apprehensive about the issue of more noise coming from the gearbox as the Carrera is my wife's car and she can get obsesive about her car. Well, neither she nor I hear any additional noise coming from the gearbox, clutch or anything else. The car drives great and has good pedal feel. The pedal probably requires a bit more effort but I don't know if this is because of the spriing clutch, new clutch or both. In any case, my experience after driving the car for one day with the new clutch is a positive one. My only complaint with the process of having the cluch repaired, is the inevitable "While you are in there..." syndrome. We found other things that were bad or about to be bad. The cost of all the repaires ended up being twice the original quote. At the end, the car is back on the road, drives great, and the wife is happy with it. And that is all that matters. |
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06-22-2012, 09:57 AM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,141
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Pedal effort is mostly pressure plate required force. Sometimes the throwout bearing sleeve can add uneeded friction.
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06-22-2012, 10:11 AM
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Flat Six
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Quote:
Sounds like a keeper!
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Dale 1985 Carrera 3.2 -- SOLD 2026 Jaguar F-Pace / 2025 Ford Bronco Sport |
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06-22-2012, 11:50 AM
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Spiderman
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Same failure on mine but then it was 13 years old and 80k miles (was a second unit already) and lots of DE's. I found a forum member who sold me a new rubber center unit (shop swap for a race clutch) and put that in. (total clutch job cost $350) I have no problem with something that lasts. Don't think I'll regret it. Think I've seen that the Turbo still calls for this style. Must be OK.
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Midnight Blue 08 Cayman S, Fun/Track Black 12 VW-GTI, work Mexico Blue 87 Carrera, sold, sad, not enough garage space. |
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06-22-2012, 12:05 PM
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AKA SportsCarFan
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The rubber center clutch on my '88 Carrera failed a couple years ago...at the end of the back straight at Mid-Ohio. The car only had about 60,000 miles on it. Turns out the rubber just dried out from age & "chunked up". My mechanic put in a turbo spring center clutch (which was actually a little cheaper than a rubber center clutch) & it has worked great.
You mentioned noise...the only noise is if I lug the engine, which I try not to do.
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Doug Miller 1988 Guards Red Carrera |
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06-23-2012, 06:43 AM
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Registered
Join Date: Mar 2012
Location: Ormond Beach, FL.
Posts: 436
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Just for the record, when I say that the clutch feels like it requires a bit more effort, I mean the whole clutch assembly as I also installed new pressure plate and TOB.
Flat six: Yes I agree, I have never known my wife to be so particular with her car as she is with the Carrera. I guess Porsches tend to bring this out on people. |
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06-23-2012, 06:57 AM
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Northern Motorhead
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The rubber centered clutch on my 89 exploded on track last Fall and i replaced it with a Sachs spring clutch and have not noticed any difference in noise or performance.If anything the effort is easier !
Cheers ! Phil
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Cheers Phil 89 Coupe,Black,95 3.6 engine and the list goes on ... 1983 944 SP2 race car PCA #96 |
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06-23-2012, 09:03 AM
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1985 Porsche Carrera
Money Pit
1988 Porsche 911 Carrera 3.2
