GT3/GT2 Performance and Track Discussion on the Porsche GT3 and GT2

Clutch chatter

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Old Jun 8, 2008 | 07:03 AM
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Clutch chatter

Anyone having clutch chatter issues on 997 GT3s ?
Not talking about noise, but actual vibration of the car in 1st and reverse when manoeuvering. Feels like it has done it since new, but last night an extended session of stop and go nonsense to find a parking spot got me really annoyed. Car has 3600 miles from new, no abuse.
What are the possible root cause and remedies ? Warranty coverage ?
 
Old Jun 8, 2008 | 08:41 AM
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Mine chatters moderately in reverse, though I haven't noticed it in first.
 
Old Jun 8, 2008 | 04:36 PM
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Mine does it when in stop-go traffic for a long time. It then goes away once I drive a few km at reasonable speeds. It does it only in 1st and reverse. Based on previous car experiences, clutch chatter is normally a result of foreign material getting on the clutch lining (ie, oil from RMS), overheating of the clutch, very high friction levels or a spring-less race clutch. I'm not sure what causes it on the GT3 though.
 
Old Jun 9, 2008 | 10:11 AM
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could be as a result from slipping the clutch when in 1st or reverse as a lot of people tend to do so.
 
Old Jun 9, 2008 | 10:44 PM
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Not much of a clutch slipper, used to torquey cars so tend to be on the other side of the spectrum.
Can the root cause and likelihood of warranty coverage be assessed without spending a fortune in labour ? Could an inspection tell if there is contaminant vs traces of overheating ?
 
Old Jul 14, 2008 | 11:51 AM
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My car is at the dealer today for an oil change, just got a phone call, RMS is leaking. Not much, probably not to the extent it would explain the chatter.
They are taking the transmission out and putting a new seal to the new specs.
 
Old Jul 14, 2008 | 05:52 PM
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Change to LWFW for real chatter.
 
Old Jul 14, 2008 | 07:22 PM
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There's noisy chatter and vibration chatter. I get the latter.
The dealer actually proposed me to go for a simgle mass fly wheel but since I am already annoyed by my clutch, not sure I want to add to the tally.
No traces of contaminant on the clutch, the clutch has so little wear that the PN is still readable, but there's a couple of heat marks on the flywheel, indicating some overheating which *could* explain what I am getting. Not sure how the clutch got that hot with so little wear.
 
Old Jul 15, 2008 | 12:09 PM
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i get in traffic a lot.. always get the chatter in 1st and reverse. i was told its normal
 
Old Jul 15, 2008 | 02:44 PM
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Not good traffic cars.
 
Old Jul 15, 2008 | 05:01 PM
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i get a little chatter doing reverse as well, but it does not do it all the time. i just thought that maybe i wasnt giving her enough gas. perhaps you can check mine out on saturday to see if similars to yours.

btw, what dealer did you bring her too? will she be ready for sat?
 
Old Jul 15, 2008 | 07:12 PM
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Porsche of Fremont, and yes the car is ready :-)
 
Old Jul 15, 2008 | 08:32 PM
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Just in reverse but it is normal for a heavy duty clutch.
 
Old Jul 15, 2008 | 09:51 PM
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Mine seems to do this at idle in neutral but not in gear any explanations?
 
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