996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

starting car without using clutch

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Old Jun 16, 2015 | 09:53 AM
  #31  
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Originally Posted by REDLINER911

Anytime you drive the car, even for a short trip, you probably actuate the clutch at least 30 times. Is one more clutch in to start the car really a big deal?
actuating with engine oil pressure and without = big difference
 
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Old Jun 19, 2015 | 11:29 AM
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Originally Posted by REDLINER911
Is one more clutch in to start the car really a big deal?
i just wanted to be able to start my car without having to get into it and sit down

obviously this mod is not for everyone
 
Old Jun 19, 2015 | 01:16 PM
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Originally Posted by prodigymb
actuating with engine oil pressure and without = big difference
Really... What's the difference? (I wasn't aware of any engine oil pressure going into the clutch)
 
Old Jun 19, 2015 | 01:20 PM
  #34  
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Originally Posted by Slider
Really... What's the difference? (I wasn't aware of any engine oil pressure going into the clutch)
there isn't any oil pressure going into he clutch lol

bearing wear in the engine when you clutch in and motor is off.... research it...
 
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Old Jun 19, 2015 | 02:54 PM
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I was hoping you would explain it...
 
Old Jun 19, 2015 | 03:14 PM
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i love this mod. one week or so in. no slamming into a parking wedge or children in front lol
 
Old Jun 19, 2015 | 05:16 PM
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FYI for those concerned with people crashing, all V12 Lamborghini's and Lotus Elise/Exige don't require clutch depressed to start from the factory.
 
Old Jun 19, 2015 | 05:20 PM
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first mod I did, less then a hour after GT2 was home...I did a bypass but like the switch idea...
Slider, it is beneficial to the main/thrust crank bearings during start-up as there is no side force on the crank when there is no oil pressure(start-up)
 
Old Jun 19, 2015 | 05:51 PM
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Originally Posted by 993GT
first mod I did, less then a hour after GT2 was home...I did a bypass but like the switch idea...
Slider, it is beneficial to the main/thrust crank bearings during start-up as there is no side force on the crank when there is no oil pressure(start-up)
hah! i KNEW i liked it but just not why. there is something intuitively *wrong* given all the peculiarities of this clutch setup as it IS not to want to lessen (a) how often i even USE it and (b) that i relieve as much undue/unassisted pressure from the system exactltly, prior to their being oil pressure. thats one good reason why i have always instinctively hated pressing the clutch with engine off and feeling the infernal accumulator stumble to do it's silly a** job. rob of course doesn't have that little problem LOL

bottom line i dont want to see me main/thrust bearings again anytime soon so if this helps with that by any percentage at all? it's a wise move.

like i'm gonna hit something' lol sheesh
 

Last edited by '02996ttx50; Jun 19, 2015 at 05:53 PM.
Old Jun 19, 2015 | 08:33 PM
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Not sure it's a big deal on these cars but lookup crank walk on the DSM motors. When you start putting in heavy clutches the wear goes way up and one of the ways to help this issue is fire it without clutching. I like the idea of a momentary switch to jump the stock switch, have to admit I'm pondering it myself!
 
Old Jun 19, 2015 | 10:39 PM
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lol was thinking of the same example as well...buddy of mine is dealing with mega 'crank-walk' on the EVO4 he bought....
Originally Posted by BLKMGK
Not sure it's a big deal on these cars but lookup crank walk on the DSM motors. When you start putting in heavy clutches the wear goes way up and one of the ways to help this issue is fire it without clutching. I like the idea of a momentary switch to jump the stock switch, have to admit I'm pondering it myself!
 
Old Jun 25, 2015 | 05:36 PM
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Just did this mod, with a twist.

I tied into the existing leads on the switch, and ran wires from those ties to a rocker switch mounted to the oval coverplate to the left of the headlamp controls. This way, either stomping the clutch or hitting the new switch serve as the ignition safety.

Easy mod, glad to have finally gotten it done.
-V
 
Old Jun 25, 2015 | 05:50 PM
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thats a hat trick. nice.
 
Old Jun 25, 2015 | 06:51 PM
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Originally Posted by '02996ttx50
thats a hat trick. nice.
Thanks. I wanted to keep the standard behavior in case some unforeseen circumstance keeps me out of the driver's seat.

And the switch has a small amber LED so it looks about as stock as such a mod can.

Worth the wait!
-V
 
Old Jun 25, 2015 | 07:41 PM
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Is that a momentary switch? That's what I'd want I think, someplace to the right so I can turn key with left. Honestly pondering this myself now!
 


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