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help with clutch diagnosis

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Old Aug 5, 2009 | 06:16 PM
  #1  
jeri534's Avatar
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From: Seattle, Wa
help with clutch diagnosis

My evo is at about 30k miles, bought it at 22k miles, turboback, licp, intake, flash since then.

When Im cruising on the freeway at like 60mph at 2800~ RPM, I will go full throttle, as soon as I hit full boost my rpms will jump about 200rpm for a half second like a slipping clutch, then seem to reengage and pull on as normal. Now Ive been in cars with bad clutches before and usually in that situation the RPMs will just shoot all the way up then come back down when it reengages, it seems like its a clutch starting to go out to me but I figure Id ask here to see if anyone has had an issue like this.
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Old Aug 5, 2009 | 06:40 PM
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Raheelq's Avatar
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its hard to say with such small shift in RPMs, it could just be the turbo spooling up causing that. is your car stock ?
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Old Aug 5, 2009 | 06:45 PM
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I don't think your clutch is going out necessarily, just having trouble clamping the aftermarket power. Where it starts to slip is right around peak torque with a lot of load(assuming you are in 5th gear) so it makes sense that the clutch is having difficulty holding.

At the same time I know many other people who have around 315wtq on a mustang dyno and are driving just fine. I think max stock clamping force is somewhere around 300wtq. I could be wrong...
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Old Aug 5, 2009 | 06:48 PM
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Originally Posted by Raheelq
its hard to say with such small shift in RPMs, it could just be the turbo spooling up causing that. is your car stock ?
No, I noted I have a turboback, LICP, intake and a flash for about 8k miles
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