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Ferdie said:... From this point of view and reading the above mentioned post I'd assume that it is most important to reduce duration and amount of friction to the clutch!
Ferdie, I believe that you are exactly correct.
Hurley Haywood was overheard to say that constantly slipping the clutch (for long durations) was not good for it.
If one were to apply fixed throttle to maintain, say, 5000 rpm on the tach and then use only the clutch to modulate movement of the car, this would be bad for any clutch.
As you point out, ceramic clutch elements may transfer heat more slowly than a steel flywheel or pressure plate in an ordinary car. On the other hand, the ceramic friction surface is thought to be more robust than the organic bits in a steel "street" clutch assembly. But, after the heat begins to build up over a long period of constant slippage abuse, it can't get out of the ceramic assembly as quickly as a "normal" steel unit, causing temperatures to rise above their already higher engineering limit. This characteristic does not make PCCC inferior, merely different from that to which one may be used.
I'll posit that the Porsche Ceramic Composite Clutch is similar to the Porsche Ceramic Composite Brake in some basic user benefits and differences. It seems that PCC Brakes are sensitive to adequate cooling air to maintain problem-free operation in high-stress usage. The brake feel is wonderful, the operational life is long, etc., if the maximum operating temperature is not exceeded. Early 996 PCCB may have had some border-line cooling issues that have been engineered out in subsequent 997 and CGT applications of these brakes. As well, the PCC Clutch has great feel, high capacity, solid coupling, and long life, provided it is not grossly overheated.
Some drivers punish their car's friction components relentlessly until the "warning smell" signals that enough is enough. This goes for brakes or clutch. PCCB and PCCC don't respond well to "beat, heat, then stink" driving because they never develop "stink". They merely over-cook without fanfare. Even though the Carrera GT is a very high limit, very durable super-car, it should not be expected to suffer exotic levels of abuse without injury.
The PCCC in the CGT may actually be the best clutch on the planet ... as long as it's not severely overheated. Driving around with the clutch half-engaged and lots of throttle dialed in is probably a recipe for a clutch job in any car. It's just WAY more expensive in a Carrera GT!