997 Turbo / GT2 2006–2012 Turbo discussion on the 997 model Porsche 911 Twin Turbo.
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Clutch Life on a PPI

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Old Dec 23, 2010 | 08:19 AM
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Old Dec 23, 2010 | 08:20 AM
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Originally Posted by Car-Narcissist
I searched first but didn't find an answer.

Can a shop that's doing a PPI determine the remaining clutch life on a 997.1 TT?
It's probably going to be pass/fail.
 
Old Dec 23, 2010 | 08:32 AM
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Only in the most superficial sense, a clutch could engage great up until it starts to slip badly. A country test; try putting the car in 6th gear(while parked), let out the clutch, if the car stalls the clutch is still good, if not it's slipping.
 
Old Dec 23, 2010 | 05:30 PM
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Because there is no clutch wear sensor, look for other signs of abuse - over revs, brake wear...are they disproportionate to the mileage on the car?
 
Old Dec 23, 2010 | 06:07 PM
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Old Dec 23, 2010 | 08:37 PM
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Originally Posted by putput6
A very experienced porsche tech can usually feel a clutch disc that's near its end from feeling how high the pedal moves once the clutch engages. Although on a turbo this is harder to perceive with the power assist clutch.
I don't understand this. The tech would have to "feel" a difference of a mm.
 
Old Dec 24, 2010 | 10:08 AM
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The tech that did my PPI basically said that since it's an "assisted" clutch you usually don't feel the wear like an unassisted clutch until it's worn out. Like Bob said, look for other signs that the car has been driven hard.
 
Old Dec 24, 2010 | 10:10 AM
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Best way would be to just get it up to 30-40mph, throw it into 5th or 6th gear, full throttle, and it'll either slip or it won't.
 
Old Dec 26, 2010 | 05:27 PM
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Last edited by putput6; May 28, 2012 at 04:04 PM.
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