Clutch Options - ZR-1 Net Registry Forums

jwfletcher · 12-22-2005

I noticed my clutch slipping on my last time out with the ZR1. It is a 1990 with a cat back exhaust, K&N Filter, Colder Thermostat and chip. I have was thinking that if I need to replace the flywheel I would go with the aluminum flywheel instead of the dual mass flywheel. Primarily because they are cheaper and I hear it will help my car turn up the rpm's quicker. I am concerned about the noise factor or I also hear the aluminum flywheel can make a basically stock ZR1 slower off the line.

I am looking for any input, especially if anyone had installed the aluminum flywheel on a basically stock 90 ZR1 and does most of their driving on the street.

Thank you,

Jason

12-27-2005

Running the fidanza flywheel on a 368 street driven. Clutch has a little noise at idle when stopped at a light. Noise will go away when clutch pedal is depressed.

A sprung clutch disk will help with the moise some. LT1 Corvette is what you'll look for. Kurt White sells a kevlar clutch.

Z Factor · 12-27-2005

Quote:

Originally Posted by jwfletcher

I am looking for any input, especially if anyone had installed the aluminum flywheel on a basically stock 90 ZR1 and does most of their driving on the street.

Thank you,

Jason

Hello Jason, and welcome to the forum.

You will find plenty of ZR-1 owners who fit that description. Bryan recently posted about putting in one and his results noise wise.

http://zr1netregistry.com/forum/showthread.php?t=1149

Here are a few more links with related info.

http://www.zr1netregistry.com/ZR1_tr...g.htm#Flywheel

http://www.zr1specialist.com/HAT%20W...eel-clutch.htm

Whatever flywheel you replace the dual-mass with, it will have to be balanced to match the dual-mass.

Also, may I suggest you go into the User CP section and list your location so others know what area you reside in?

Cdn ZR1 Mike · 12-28-2005

My 90 has a number of small mods but nothing in the engine yet. I had the aluminum flywheel and put the stock one back in and love the car again. No noise and car feels very smooth again. For the marginal power advantage of the aluminum flywheel I wouldn't bother unless your planning to drag race your car a lot. Just my .02 however. Good luck.

12-22-2005	#1
jwfletcher Join Date: Jul 2005 Location: Ramona, CA (San Diego County) Posts: 1	Clutch Options I noticed my clutch slipping on my last time out with the ZR1. It is a 1990 with a cat back exhaust, K&N Filter, Colder Thermostat and chip. I have was thinking that if I need to replace the flywheel I would go with the aluminum flywheel instead of the dual mass flywheel. Primarily because they are cheaper and I hear it will help my car turn up the rpm's quicker. I am concerned about the noise factor or I also hear the aluminum flywheel can make a basically stock ZR1 slower off the line. I am looking for any input, especially if anyone had installed the aluminum flywheel on a basically stock 90 ZR1 and does most of their driving on the street. Thank you, Jason __________________ Jason Fletcher 1990 ZR-1

12-27-2005	#2
Jeffvette Guest Posts: n/a	Re: Clutch Options Running the fidanza flywheel on a 368 street driven. Clutch has a little noise at idle when stopped at a light. Noise will go away when clutch pedal is depressed. A sprung clutch disk will help with the moise some. LT1 Corvette is what you'll look for. Kurt White sells a kevlar clutch.

12-28-2005	#4
Cdn ZR1 Mike Join Date: Nov 2004 Posts: 38	Re: Clutch Options My 90 has a number of small mods but nothing in the engine yet. I had the aluminum flywheel and put the stock one back in and love the car again. No noise and car feels very smooth again. For the marginal power advantage of the aluminum flywheel I wouldn't bother unless your planning to drag race your car a lot. Just my .02 however. Good luck. __________________ 1990 ZR1 Ported Intake, IH's and PC'd (JeffVette), 4:10's, SLP air intake, SW headers, X-pipe with flowmasters. Haibeck chip. 12.1 @117mph on GSD-3's. :mrgreen: