To leve the clutch in or not?
12-27-2005, 08:09 PM
#1
To leve the clutch in or not?
Sorry for the stupid question but i have heard different answers.If you are in stop and go traffic is it better to keep throwning the car in nuetral when stopped or to keep the clutch depressed until traffic starts to move again?
12-27-2005, 08:56 PM
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12-27-2005, 11:29 PM
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Originally Posted by OCBen
12-27-2005, 11:47 PM
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If I remember correctly we have a "self-adjusting" clutch. I forget the details, read about it a long time ago. Even though the self-adjustng might have little to do with release bearing longevity, it IS state-of-the-art and therefore old (ancient?) reasoning on this issue is probably a waste of time.
IOW, Do whatever gives you GT comfort (even luxury) in your GT car!!!!
IOW, Do whatever gives you GT comfort (even luxury) in your GT car!!!!
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12-28-2005, 01:40 AM
#8
My Dad is a genius, just ask him, and he taught me that... 1) if the car is moving, it should be in the gear appropriate to pop the throttle and catch the power curve and accelerate away, 2) if the car is at a stop, the car is in neutral with your foot on the brake, never off the brake, and (ta da!) if there is the slightest chance you will be rear ended and catapulted into on coming traffic... always wear clean skivvies because ER nurses CAN NOT keep a secret.
12-28-2005, 02:09 AM
#9
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Once again, in case someone didn't follow the link that Ben posted:
Steve Weiner, whose opinion I highly respect said this on the 993 Forum:
<<FWIW, its VERY poor practice to hold the clutch pedal down while waiting for the light to change in ANY car and the Carrera is no exception to that rule.
The throwout bearing (release bearing) is heavily loaded at that moment and such practices truly shortens the life of that component. Further, it adds more wear to the crankshaft thrust bearings which are the bearings that maintain the crank's fore-and-aft position in the case.
Just slip it into neutral and your car (and your wallet) will be happier for it.>>
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Steve Weiner
Rennsport Systems
Portland Oregon
In the olden days, we had an additional reason: the archaic carbon throow-out bearing on the British cars wore out rapidly if you stayed in gear at a light.
Steve Weiner, whose opinion I highly respect said this on the 993 Forum:
<<FWIW, its VERY poor practice to hold the clutch pedal down while waiting for the light to change in ANY car and the Carrera is no exception to that rule.
The throwout bearing (release bearing) is heavily loaded at that moment and such practices truly shortens the life of that component. Further, it adds more wear to the crankshaft thrust bearings which are the bearings that maintain the crank's fore-and-aft position in the case.
Just slip it into neutral and your car (and your wallet) will be happier for it.>>
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Steve Weiner
Rennsport Systems
Portland Oregon
In the olden days, we had an additional reason: the archaic carbon throow-out bearing on the British cars wore out rapidly if you stayed in gear at a light.
12-28-2005, 03:20 PM
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I dunno. I think NASA builds pumps which can empty a swimming pool in five seconds, therefore Porsche can develop a release bearing and thrust bearing to survive the average urban driver's use when waiting at traffic lights. Would be nice to know from clutch replacement service technicians how many thrust/release bearings were "still good," when the plate was needing replacement. Oh!..., no..., just ask the RMS leak technicians since they usually replace those components anyway. 
My point: as far as the clutch use is concerned just do what's comfortable for you, the car will take care of itself. You'll pay the same for that convenience/comfort one way or another.
hey! I know! SOMEBODY check the manual and get back to us!
Another BIG question for 993 experts: Since 997s REQUIRE clutch to be enguiaged to start the car, isn't THAT a HUGE factor in their supposed premature wear? I mean a cold bearing subjected to sudden torque of a starting engine must equal how many HOURS sitting at a light with warmed up clutch and tranny?
My point: as far as the clutch use is concerned just do what's comfortable for you, the car will take care of itself. You'll pay the same for that convenience/comfort one way or another.
hey! I know! SOMEBODY check the manual and get back to us!
Another BIG question for 993 experts: Since 997s REQUIRE clutch to be enguiaged to start the car, isn't THAT a HUGE factor in their supposed premature wear? I mean a cold bearing subjected to sudden torque of a starting engine must equal how many HOURS sitting at a light with warmed up clutch and tranny?
12-29-2005, 11:26 AM
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I judge whether I will be stopped long enough to warrant going into neutral.
If it's a very short stop I will probably hold the clutch in during that short time span and stay in 2nd and try to keep moving. If I actually stop, at some point I will go into neutral to release the clutch. If it's a case where you almost never stop completely I push in the clutch when very momentarily stopped, which in rush hour traffic can happen, and I will probably not go into neutral unless for some reason I need a break for my leg.
If it's a very short stop I will probably hold the clutch in during that short time span and stay in 2nd and try to keep moving. If I actually stop, at some point I will go into neutral to release the clutch. If it's a case where you almost never stop completely I push in the clutch when very momentarily stopped, which in rush hour traffic can happen, and I will probably not go into neutral unless for some reason I need a break for my leg.
