Improved Clutch Action Dramatically
04-09-2007, 07:48 PM
#61
Race Car
Originally Posted by Doug Donsbach
I did it just before taking the car out to have lunch today. The cartridge in my '99 is the old style in which the pin on the pedal is not held captive by the cartridge, so removal was trivial: just put a cotter pin in the hole in the rod, depress the pedal all the way to the floor and wiggle the cartridge out.
Pedal effort is substantially increased and in fact seems to be more than the effort required on the clutch of my F-250 diesel truck. But because there isn't a lot of pedal assist just as you approach the clutch engagement point, it's easier to pick up the engagement point quickly. And because the cartridge pivot point is no longer in there, the little annoying squeaks are gone.
One downside on my car is that the pedal now has a little play when the clutch is fully engaged (pedal fully out), making positive operation of the cruise control release switch a little problematic. This may be due to the earlier design present on my car as the later design uses a different pedal, which may have a different pivot point or may position the CC switch differently, or may be due to a pushrod adjustment issue - I don't know.
But even without that minor problem, I think it's too much pedal effort for my daily driver. I think I'd be happier with some assist, and will look for a lower-rate (maybe 1/2?) spring to replace the stock spring in the cartridge.
Pedal effort is substantially increased and in fact seems to be more than the effort required on the clutch of my F-250 diesel truck. But because there isn't a lot of pedal assist just as you approach the clutch engagement point, it's easier to pick up the engagement point quickly. And because the cartridge pivot point is no longer in there, the little annoying squeaks are gone.
One downside on my car is that the pedal now has a little play when the clutch is fully engaged (pedal fully out), making positive operation of the cruise control release switch a little problematic. This may be due to the earlier design present on my car as the later design uses a different pedal, which may have a different pivot point or may position the CC switch differently, or may be due to a pushrod adjustment issue - I don't know.
But even without that minor problem, I think it's too much pedal effort for my daily driver. I think I'd be happier with some assist, and will look for a lower-rate (maybe 1/2?) spring to replace the stock spring in the cartridge.
04-09-2007, 08:49 PM
#62
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1. My pedal has the squeak, so that immediately peaked my interest.
2. I ride through heavy traffic regularly, so is this mod not a consideration for me? My 911 is my one and only car. Mixed blessing I guess.
2. I ride through heavy traffic regularly, so is this mod not a consideration for me? My 911 is my one and only car. Mixed blessing I guess.
04-09-2007, 09:10 PM
#63
Race Car
Originally Posted by waldrondigital
1. My pedal has the squeak, so that immediately peaked my interest.
2. I ride through heavy traffic regularly, so is this mod not a consideration for me? My 911 is my one and only car. Mixed blessing I guess.
2. I ride through heavy traffic regularly, so is this mod not a consideration for me? My 911 is my one and only car. Mixed blessing I guess.
04-09-2007, 10:07 PM
#65
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Originally Posted by wrljet
The right spray fixes the squeak.
04-09-2007, 10:09 PM
#66
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Originally Posted by waldrondigital
1. My pedal has the squeak, so that immediately peaked my interest.
2. I ride through heavy traffic regularly, so is this mod not a consideration for me? My 911 is my one and only car. Mixed blessing I guess.
2. I ride through heavy traffic regularly, so is this mod not a consideration for me? My 911 is my one and only car. Mixed blessing I guess.
04-09-2007, 10:24 PM
#67
Drifting
Thread Starter
Originally Posted by 1999Porsche911
Even without the spring, the clutch operation is only half of what many of the old cable controlled clutches were. Can't imagine it being a problem for anyone who has legs.
If you can walk or your legs can carry your body weight without too much problem, you should be able to deal with the clutch just fine without the assist spring. It only feels hard because you are used to the feeling of stepping on a marshmallow instead of a clutch pedal.
I can still push it easily with my left arm, that I have severly broken twice and has mucsle tissue that never grew back as well as 13 screws in the ulna and radius. If your leg is significantly weaker than my arm, you may have a problem in heavy stop and go rush hour traffic.
Otherwise get after it and don't look back.
Oh, BTW the biggest reason my 996 was a pain in heavy stop and go traffic was the fact that the clutch had no feel and its like you were alway guessing where the engagement point was. Often having to over rev more than necessary and somewhat slipping the clutch and waiting for engagement to happen. If I didn't rev it enough and let the pedal out too abruptly, the motor would kill and I'd have to endure the painful embarassment of restarting the car and trying again.
This mod will make heavy traffic and stop and go driving much more pleasent, and shoud dramatically increase cluth life.
04-09-2007, 10:27 PM
#68
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Originally Posted by nick49
+1
If you can walk or your legs can carry your body weight without too much problem, you should be able to deal with the clutch just fine without the assist spring. It only feels hard because you are used to the feeling of stepping on a marshmallow instead of a clutch pedal.
I can still push it easily with my left arm, that I have severly broken twice and has mucsle tissue that never grew back as well as 13 screws in the ulna and radius. If your leg is significantly weaker than my arm, you may have a problem in heavy stop and go rush hour traffic.
Otherwise get after it and don't look back.
If you can walk or your legs can carry your body weight without too much problem, you should be able to deal with the clutch just fine without the assist spring. It only feels hard because you are used to the feeling of stepping on a marshmallow instead of a clutch pedal.
I can still push it easily with my left arm, that I have severly broken twice and has mucsle tissue that never grew back as well as 13 screws in the ulna and radius. If your leg is significantly weaker than my arm, you may have a problem in heavy stop and go rush hour traffic.
Otherwise get after it and don't look back.
04-09-2007, 11:54 PM
#73
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Originally Posted by 1999Porsche911
You should have no problem with cruise control. Make sure the piston on the switch if pulled out fully.
The geometry must be different with the later design.
04-10-2007, 03:38 AM
#74
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Originally Posted by nick49
If you can walk or your legs can carry your body weight without too much problem, you should be able to deal with the clutch just fine without the assist spring. It only feels hard because you are used to the feeling of stepping on a marshmallow instead of a clutch pedal.
Originally Posted by AndyK
Do the 993's come with this spring device?
04-10-2007, 04:10 AM
#75
Racer
I've been driving stick shift cars and trucks all my life and yet I stall my 2000 C2 at least once every couple of weeks. When I first got the car, I'd stall it two to three times a day. Once I stalled the friggin thing twice in a row - with dealer plates on it. Boy did I feel like a rookie idiot.
He11 I could go years without stalling the F150 pickup I used to have.
Now I know why. I'll give this mod a try soon.
He11 I could go years without stalling the F150 pickup I used to have.
Now I know why. I'll give this mod a try soon.