FM1 Clutch Slipping
#1
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This morning, at 30F,, 5th gear, clutch started slipping. I've had this clutch in for about 4 years, 30K miles. I never did the push rod adjustment, as did not seem needed. I did change cylinders (master and slave) a few months ago.
Cold weather changing friction? Cold air yielding more torque? '99 Stock Rod engine, so I would think well within the limits of this clutch.
Experiences and suggestions?
Cold weather changing friction? Cold air yielding more torque? '99 Stock Rod engine, so I would think well within the limits of this clutch.
Experiences and suggestions?
#3
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Yes I am. Per my pulse width, I am likely about 5% more torque than typical, so about 220 - 230 ft-lbs. So, yes, up a little, but still should be within spec of this clutch, easily.
EBC is holding boost level pretty well (maybe 4 kPa over normal), so the 5% would be more air density related.
EDIT: Just remembered that last month, I replaced the bump stop on the pedal. Perhaps I should adjust position. Perhaps, go underneath the car and make sure the slave plunger is loose.
EBC is holding boost level pretty well (maybe 4 kPa over normal), so the 5% would be more air density related.
EDIT: Just remembered that last month, I replaced the bump stop on the pedal. Perhaps I should adjust position. Perhaps, go underneath the car and make sure the slave plunger is loose.
Last edited by DNMakinson; 01-22-2019 at 11:08 AM.
#4
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Update.
This afternoon I checked pedal play and there was some. It was 45*F, but still slipped, not just at 16 psi, but at about 10. So I took it back to waste gate of 7.5.
Looks like I'll have to pull the clutch and take a look.
Will be a couple of months, as I have surgery coming.
So, could it be possible that clutch is finished this quickly?
DNM
This afternoon I checked pedal play and there was some. It was 45*F, but still slipped, not just at 16 psi, but at about 10. So I took it back to waste gate of 7.5.
Looks like I'll have to pull the clutch and take a look.
Will be a couple of months, as I have surgery coming.
So, could it be possible that clutch is finished this quickly?
DNM
#5
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Join Date: Aug 2016
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DNM I had a similar issue where at my same usual power level the FM1 clutch started slipping. I was at 14psi on a GT2560 so no way I was overpowering it. I adjusted the clutch several times to no avail. Ended up pulling it and posting a thread here to see if anyone saw issues with the disc and no one saw anything, check my thread history for details. I ended up swapping in a supermiata sport clutch puck and haven't looked back. I didn't bother trying to have FM look at the clutch or make it right because I was over it. I wonder if there is a manufacturing issues with these?
#6
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I never slipped my FM1 clutch at 16 PSI or those power levels. Not sure what would cause yours to slip... I did however slip a SPEC level 2 clutch at like 12psi. With a 2560.
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