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GT clutch slips

 
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  #1 (permalink)  
Old 26 May 2017, 03:13 pm
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Default GT clutch slips

So, hi guys!

I have a nice GT 2004 with MT. The clutch was slipping badly, so I have changed the flywheel, disc, pressure plate and slave cylinder. All parts were clean and dry. It was ok for about 300km and now is slipping again. Do anyone have an idea? I have tried bleeding, adjusting the rod and so on, without effect.
It slips all the time
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Old 26 May 2017, 04:53 pm
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Default Re: GT clutch slips

sometimes when they remanufacture them, they only resurface the friction area.(1) this leaves the bed the pressure plate attaches to (2) too high. some places do this because they are too lazy to remove the pegs(3), other times it's lack of care/knowledge, or they think it won't matter. if the outer edge is too high, the pressure plate can't squeeze the disk like it should and it will slip either right away, or very soon after installation.

Capture.jpg

if you still have the old flywheel, you could measure the depth of the step in the flywheel to rule this out. if it is too high, you can likely remove the pegs from the outer area and have it cut so it is the proper depth.

i learned of this when it happened to me with a honda clutch, now it's something i always check before installation of any clutch.

since it's slipping after only 300km, i'd try to get it replaced under warranty. a PT clutch should only take 4 hours and a couple beers.

i'm sure you'll get other ideas about what's going on, but this would be my guess.


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flywheel step info http://www.roadraceengineering.com/c...ywheeltech.htm

Last edited by rob302; 26 May 2017 at 05:45 pm.
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Old 26 May 2017, 11:07 pm
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Default Re: GT clutch slips

Well, all the parts were brand new, so I can rule that problem out.
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Old 27 May 2017, 12:34 am
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Default Re: GT clutch slips

just abandon the convoluted, heavy and complex dual-mass flywheel and get a single-piece conversion flywheel.
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Old 29 May 2017, 06:12 am
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Default Re: GT clutch slips

Well, I have noticed, that the problem occurs only, when the car is hot. Today it was rather cold, and everything was ok. I have once heard about the problem of slipping in the transmition itself. Somebody got an idea?
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Old 29 May 2017, 06:28 am
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Default Re: GT clutch slips

There is nothing inside a manual trans that can slip. It's either the clutch, or the clutch hydraulics
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Old 06 Jun 2017, 06:13 am
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Default Re: GT clutch slips

Well, the only part, that has not been changed ist the master cylinder. Could there be a problem?
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Old 06 Jun 2017, 07:23 am
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Default Re: GT clutch slips

Can you devise a way to disconnect the hydraulics and test it? like disconnect the slave and have another car push start you in 2nd?
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Old 06 Jun 2017, 07:28 am
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Default Re: GT clutch slips

The problem is, that the clutch slips after at least 20km, i can hardly imagine such a test
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Old 06 Jun 2017, 09:13 am
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Default Re: GT clutch slips

is there any chance the fluid is contaminated? i could imagine water in there expanding after it gets hot. is there any way to loosen the adjuster under the dash a bit and measure free play when it's cold vs hot?

not trying to be full of dumb ideas, just hate to see people throw parts/money at problems like this.
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