Resurfacing Flywheel YES/NO???
Thread Starter
Melting Slicks
Joined: May 2001
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From: Tyler TX
Resurfacing Flywheel YES/NO???
I'm going to have to replace my clutch soon and was wondering what to do about the flywheel. CAN it be resurfaced? I've heard that it can't and I've heard than it can. Which is it, and why?
Team Owner
Joined: Aug 1999
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From: Bagpipes put the "fun" in "funeral"
Re: Resurfacing Flywheel YES/NO??? (91-Z07Coupe)
If you drag race the car, then replace and don't resurface. If it's a daily driver, then resurfacing is probably fine (it depends on how deep the burn spots are). I think the concern is that if you take too much off the flywheel surface, the clutch will grab higher up in the pedal and be more prone to slipping or chattering. Just make sure a good corvette mechanic does the job, because you really won't know until the flywheel is taken out and inspected.
I had mine resurfaced about 10k miles ago and haven't had any problems (the car had 78k miles when the clutch was replaced). The new clutch and resurfaced flywheel feels just like every other ZF6 I've driven and it holds great.
[Modified by Thud, 9:30 AM 10/2/2001]
I had mine resurfaced about 10k miles ago and haven't had any problems (the car had 78k miles when the clutch was replaced). The new clutch and resurfaced flywheel feels just like every other ZF6 I've driven and it holds great.
[Modified by Thud, 9:30 AM 10/2/2001]
Burning Brakes
Joined: Jan 2001
Posts: 1,169
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From: Manhattan
Re: Resurfacing Flywheel YES/NO??? (91-Z07Coupe)
I've also been looking into clutches.
The reason I've heard you cannot resurface the flywheel is because of it's dual-mass design. From what I understand, it's "like" two flywheels connected together. If you grind too much metal from the back flywheel, the difference in weight will cause problems. I don't recall what problems, but on this forum, the concensus is to replace, not resurface.
The reason I've heard you cannot resurface the flywheel is because of it's dual-mass design. From what I understand, it's "like" two flywheels connected together. If you grind too much metal from the back flywheel, the difference in weight will cause problems. I don't recall what problems, but on this forum, the concensus is to replace, not resurface.
Drifting
Joined: Jul 2001
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From: La Fontaine Indiana
Re: Resurfacing Flywheel YES/NO??? (Raistlin)
If you have to replace the flywheel don't put another dual mass flywheel get a clutch and flywheel that replaces the dual mass. Shop around their are several companys that make them. I would suggeest one but I have learned that if you do that someone always disagrees and wants to make big issue of it. :bs
Safety Car
Joined: Mar 2000
Posts: 3,620
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From: Hillsboro OR
Re: Resurfacing Flywheel YES/NO??? (91-Z07Coupe)
You have three options here.
1. If the flywheel is not scorred from rivets, has no cracks from over heating, and the runout isn't too bad, you should be able to lightly sand the surface and reuse it. I did this with mine and it seems to be working fine.
2. Get new $800 dual mass flywheel.
3. Get single mass $300 flywheel, modified fork (maybe needed), and live with the noise of the transmission at idle.
I do not recommend resurfacing the flywheel. There was a post about someone who did this and had it to break apart on them afterwards at high rpm. The cutting fluid and flywheel filings will get into the dual mass assembly and cause it to fail at some point after its reinstalled.
1. If the flywheel is not scorred from rivets, has no cracks from over heating, and the runout isn't too bad, you should be able to lightly sand the surface and reuse it. I did this with mine and it seems to be working fine.
2. Get new $800 dual mass flywheel.
3. Get single mass $300 flywheel, modified fork (maybe needed), and live with the noise of the transmission at idle.
I do not recommend resurfacing the flywheel. There was a post about someone who did this and had it to break apart on them afterwards at high rpm. The cutting fluid and flywheel filings will get into the dual mass assembly and cause it to fail at some point after its reinstalled.
Melting Slicks
Joined: Aug 2001
Posts: 2,047
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Re: Resurfacing Flywheel YES/NO??? (AquaMetallic94LT1)
Valid point with the filings and cutting fluid, etc. I took mine to a reputable shop and had it cut. No problems 30k miles later. It's time for another clutch after all the abuse of the last couple years, so I thought I'd "click in" here and see what was said.
