L98 Flywheel to replace a dual mass

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Nov 27, 2004 | 09:35 AM

tvetta

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From: Walton Kentucky

L98 Flywheel to replace a dual mass

Have you guys heard of this working?
Will I experience the same problems of vibration like the Fadenza?
YOU hear alot of stories but I looking for facts!

Last edited by tvetta; Nov 27, 2004 at 11:30 AM.

Nov 27, 2004 | 11:32 AM

tvetta

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From: Walton Kentucky

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Nov 27, 2004 | 12:02 PM

zrracer

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From: palm harbor/murphy Fl/NC

C6 of Year Finalist (performance mods) 2019

St. Jude Donor '11, '14

I use the Fidensa's. Yes they rattle a little.

Put a nice exhaust system on the car and the slight rattle will go away!!!

Robin

Nov 27, 2004 | 03:51 PM

tvetta

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From: Walton Kentucky

Is this a solution or a band aid?

Nov 27, 2004 | 04:23 PM

Red Tornado

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From: OBAMA IS HITLER

Quote:

Originally Posted by tvetta

Is this a solution or a band aid?

depends on what you mean by a band aid. actually the real band aid IS the dual mass flywheel. I have the Fidanza alum one as well, it weighs 13 lbs. Anything much lighter than the 40+ lb. factory dual mass is going to rattle a little. The rattle is only a minor auditory nuisance thats all.

Here are the prs and cons in a nutshell:

dual mass
pros: quieter with ZF tranny.
cons: non-repairabale (can't be resurfaced successfully), horribly expensive to replace.

single mass
pros: less than 1/2 price of a dual mass, less wear on main bearings in engine, easily repairable, much faster revving, more hp transfered to the wheels.
cons: noisier rattle sound at idle (w/clutch disengaged), some experience minor noise in lower RPMS.

Nov 27, 2004 | 05:49 PM

tvetta

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From: Walton Kentucky

Sounds good but can anyone answer if I can use an L98 flywheel instead of the dual mass?

Nov 27, 2004 | 05:56 PM

LD85

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From: Indianapolis IN

Yes, I have read that you can but you need a longer ZR 1 pivot stud to make up for the thinner FW.

I bought a Centeforce Singel Mass conversion FW

Nov 27, 2004 | 06:05 PM

TheCorvetteKid

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From: The Motor City

What do you mean by an "L98" flywheel?

If you are talking about using a flywheel out of an '85-'88 4+3-speed L98 Corvette then no you can't - the bolt pattern is not the same. GM made alot of modifications (more than some people realize) in order to mate the ZF-6 to the L98 engine for 1989.

If you mean a flywheel out of an '89-'91 6-speed L98 Corvette, then yes you can. The engines are virtually the same during these years (with the exception of some modifications to the fuel system).

Personally, I went with a new dual-mass unit from GM for my '89. It cost me a small fortune to do it, but my car is basically all original, and I wanted to keep it that way. But if you are looking to gain some performance and loose a little bit of weight at the same time, then your best option would be to go with an aftermarket unit. Callaway made a nice one (I don't know if they still make it though) using a blank flywheel, meaning the holes haven't been drilled, from an '93-up F-body. It's probably your most cost effective option.