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Old 06 Sep 2009, 08:56 AM   #1 (permalink)
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clutch

clutch slipping on v8 bumping bhp upto 350/400 bhp which clutch would be best oem/paddle/twin plate
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Old 06 Sep 2009, 12:43 PM   #2 (permalink)
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Re: clutch

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Originally Posted by seadog1715 View Post
clutch slipping on v8 bumping bhp upto 350/400 bhp which clutch would be best oem/paddle/twin plate
i'm dreading this happening on future plans on my v8. the car is currnelty 353 and even more torque, heard the clutch should be good for over 400, but there is always a doubt in my mind.

Not sure which would be the best to go for, although it's very budget dependent.
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Old 06 Sep 2009, 01:03 PM   #3 (permalink)
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Re: clutch

The best clutch plate that would hold upto 350/400 bhp would be one that has:
a. Highly sprung pressure plate. The more clamping force the pressure plate exerts, the better it will grip.
b. High coefficient of friction clutch material. The higher the coefficient of friction, the better it will grip.
c. Increase the amount of surfaces. This can be accomplished by going to a twin or triple disc design.
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Old 06 Sep 2009, 02:53 PM   #4 (permalink)
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Re: clutch

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Originally Posted by 2002pete View Post
The best clutch plate that would hold upto 350/400 bhp would be one that has:
a. Highly sprung pressure plate. The more clamping force the pressure plate exerts, the better it will grip.
b. High coefficient of friction clutch material. The higher the coefficient of friction, the better it will grip.
c. Increase the amount of surfaces. This can be accomplished by going to a twin or triple disc design.
As pete says... plus lightened flywheel
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Old 06 Sep 2009, 04:23 PM   #5 (permalink)
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Re: clutch

twin plate and lightened flywheel for my xmas box then
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Old 06 Sep 2009, 04:48 PM   #6 (permalink)
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Re: clutch

As Pete said
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Old 06 Sep 2009, 05:02 PM   #7 (permalink)
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Re: clutch

you wont need a tin plate for 400bhp on a sti8.

got an exedy organic on mine, lighter than standard and good for 400/400 for everyday driving.

Mine has lasted a season of drag racing last year, launching at 6000rpm 1.3 bar on 888's. Only after on excess of 40 launches did it start to slip. Clutch is still in the car and fine for road use, just cant launch until twin plate fitted.

It depends on what you want to use the car for, a twin plate with flysheel will set you back in excess of 1100 not inc fitting.
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Old 06 Sep 2009, 05:05 PM   #8 (permalink)
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Re: clutch

How much can my standard OEM clutch cope with guys???? getting mine mapped for 95ron unleaded here shortly and hope to hit 300bhp after the map the mapper told me cause I dont want to be changing clutch any time soon as its only fitted 7-8mths ago any chance for slippage with 300bhp on OEM clutch?
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Old 06 Sep 2009, 05:10 PM   #9 (permalink)
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Re: clutch

depends on the year, would have thought 300 should be ok on oem, but it does depend on how many miles have been done on the oem clutch.
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Old 06 Sep 2009, 05:53 PM   #10 (permalink)
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Re: clutch

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depends on the year, would have thought 300 should be ok on oem, but it does depend on how many miles have been done on the oem clutch.
About 10k miles JD on new clutch she is a version 6 sti Ra 2000 dont ride the clutch either and only go hard on it now and again for fast road thats about it so you think it be fine? dont know weather to go Ecutek or Simtek either for mapping
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Old 09 Sep 2009, 07:57 AM   #11 (permalink)
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Re: clutch

thanks for sound advise mate by the way car will be used on track days
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