C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

changing the clutch this weekend

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Old Apr 15, 2010 | 10:48 PM
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From: harrison twp michigan
Default changing the clutch this weekend

ok guys , new c 4 owner here. im changing the clutch on my 94 tommorow and have been reading up on it . whats the deal with the fly wheels on these cars? can they be turned? i read in a post that they shouldnt be turned , then i read that you can only take off .006 . not sure what the flywheel even looks like yet , ill start taking the trans out tommorow so any advice would be helpful . thanks
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Old Apr 16, 2010 | 10:08 AM
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Originally Posted by redguy
ok guys , new c 4 owner here. im changing the clutch on my 94 tommorow and have been reading up on it . whats the deal with the fly wheels on these cars? can they be turned? i read in a post that they shouldnt be turned , then i read that you can only take off .006 . not sure what the flywheel even looks like yet , ill start taking the trans out tommorow so any advice would be helpful . thanks
Everything I have ever read on these Dual Mass Flywheel, they can can/should not be turned.
Scrrem
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Old Apr 16, 2010 | 11:29 AM
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Could depend on how many miles you have on it and how it was driven,(Raced or Hwy Miles etc.)


Inspect it for excessive play and oil leakage.Let us know the condition and possibly we can make recommendations.You might be able to just re-use it as is.
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Old Apr 16, 2010 | 01:31 PM
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When I had my motor out, the machine shop decided to turn mine, even though I had not asked for it- so far, seems fine.

That said, I'd inspect and see if it needs it or not. And if it does, call around and ask specifically about it -- I've heard that some have developed specific fixturing to deal with the dual-mass units. Keep in mind that these are also used on other vehicles too (like diesel pickups) so it's not just a corvette thing, and not exactly an exotic request.
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Old Apr 16, 2010 | 02:11 PM
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I had mine resurfaced. No difference at all.I put a stage 3 in and it's not street friendly at all, especially in reverse.
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Old Apr 16, 2010 | 06:31 PM
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I had mine lightly resurfaced 2 years ago and a new clutch and it's doing great.
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Old Apr 19, 2010 | 10:55 PM
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From: harrison twp michigan
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well i got the flywheel off tonight , and im not really sure what to look for as far as ware. but it doesnt look bad . no oil leakage at all on it rear main still good , so when these things get worn out badly what do they look like ? not much of a groove in this thing at all
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Old Apr 20, 2010 | 09:50 AM
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In the FSM there is a procedure for checking the internal springs.
Outer disk move relative to inner disk - shoot a while back someone posted a link to a video that shows one in operation. Really cool looking.
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