[Georges]

Well, I had the light weight flywheel in the car and needed to replace the clutch last September at about 10,000 miles and about 3 years time.  Status = friction plate completely worn out.  In some ways I was glad because the vibrations were getting to me. I could feel them in third gear.  I had taken the original clutch beyond 100,000 miles.  So I don't think my skills are the cause. 

 

He he, anyone want to buy light weight flywheel?  There's one available somewhere in my garage. 

 

Even with new clutch the transmission was very noisy.  Short story, I had to have the transmission rebuilt last month. 

 

BTW, the light weight flywheel really did not do what I had hoped for in terms of performance, primarily at autocross. 

 

The good news is I like the car again after the rebuilt.  I was driving the car less and less due to the vibrations.   Yesterday, I used it to go get milk. 

 

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[flash]

i pulled mine out for similar reasons.  the car just plain feels better with the OEM flywheel

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[94SilverCab]

I made the decision today to replace clutch/flywheel with OEM...too many vibration issues with the Lightweight flywheel, and despite my driving style this is primarily a street car. 21 years on the factory clutch/flywheel, I find it hard to believe the factory got it wrong.

 

JMHO,

 

Jay

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[Georges]

Yes, I had forgotten how nice the car is/can be.  I guess the Porsche engineers have  a reason to do what to do. 

 

I am looking forward to another 100,000 miles on the new clutch.

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[flash]

yeah- it was fun when i had the 12lb flywheel, because i could race through the gears, bang hard, get a good scratch through 3rd, and really have fun on the track ( i did that a handful of times).  the rest of the time, i was dealing with rattles, vibrations, stalls, and jerky shifts.

 

then i went with the 18lb unit when i supercharged, because the car really wanted to stall with the 12lb.  that still wasn't enough.  so, i added the 4lb S2 dampener.  that helped with the noise, vibrations, and all that, and stopped the stalling, but still wasn't civilized enough for street driving, and certainly not for sitting in traffic.

 

so, back to the DMF.  all is much better.  the car is a tad slower (seriously - barely) through the gears, but actually better off the line.  rev matching is a bit harder, but i've adjusted.  the differences aren't as large on a supercharged car than normally aspirated, due to the drag of the supercharger itself.

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[danderson]

MY car is at 165,000 miles and I still have not put in a clutch and was definitely leaning toward a light flywheel.
I now think better of that idea. Thanks for all of your comments above. It will have saved me a major headache sometime.

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