New Dual Mass flywheel - ZR-1 Net Registry Forums

secondchance · 10-10-2017

Since my last engine rebuild/install, I have been chasing ratty, rattling noise coming from drivetrain at idle. At first, I suspected faulty injector/injects and replaced all injectors this spring from rebuilt FIC injectors to Accel injectors which failed to correct the situation.
Last resort was new DM flywheel. Finding a NOS DM was not easy. However, as I was looking, DRM500RUBYZR-1 had one for sale on the other forum at a great price! Contacted Marty, Tom (Roadster) volunteered to pick it up and deliver to Westminster, etc, etc...

Last Saturday, I finally got around to installing it at Jim's in Westminster - a WAZOO event. More correctly, Glen, Jim and Al did all the hard work and I helped.

While at it, cleaned dirt and grease build up under the car, replaced back up light switch, installed a new pressure plate, TO bearing, pilot bearing, resealed the tail shaft seal, patched up damaged heat/sound insulation, etc... Had to use lightly used clutch offered by Jim since I forgot that I had used a new clutch that came with the kit before and managed to drop the clutch/pressure plate while removing from the car damaging both.

Wow! What a difference a good DM flywheel makes! Idle is butter smooth with no ratty, chattering noise at idle and the LT5 sounds and feels buttery smooth as she revs up. I had a bit of thumping at idle and chalked it up to higher lift intake cams I had installed. Now, I suspect old, worn out DM was the culprit.

A great, big thanks to WAZOO and Marty!

Glen taking charge of disassembly and reinstall:

I hope this Flickr image posting works...

10-10-2017	#1
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,723	New Dual Mass flywheel Since my last engine rebuild/install, I have been chasing ratty, rattling noise coming from drivetrain at idle. At first, I suspected faulty injector/injects and replaced all injectors this spring from rebuilt FIC injectors to Accel injectors which failed to correct the situation. Last resort was new DM flywheel. Finding a NOS DM was not easy. However, as I was looking, DRM500RUBYZR-1 had one for sale on the other forum at a great price! Contacted Marty, Tom (Roadster) volunteered to pick it up and deliver to Westminster, etc, etc... Last Saturday, I finally got around to installing it at Jim's in Westminster - a WAZOO event. More correctly, Glen, Jim and Al did all the hard work and I helped. While at it, cleaned dirt and grease build up under the car, replaced back up light switch, installed a new pressure plate, TO bearing, pilot bearing, resealed the tail shaft seal, patched up damaged heat/sound insulation, etc... Had to use lightly used clutch offered by Jim since I forgot that I had used a new clutch that came with the kit before and managed to drop the clutch/pressure plate while removing from the car damaging both. Wow! What a difference a good DM flywheel makes! Idle is butter smooth with no ratty, chattering noise at idle and the LT5 sounds and feels buttery smooth as she revs up. I had a bit of thumping at idle and chalked it up to higher lift intake cams I had installed. Now, I suspect old, worn out DM was the culprit. A great, big thanks to WAZOO and Marty! Glen taking charge of disassembly and reinstall: I hope this Flickr image posting works... Last edited by secondchance; 10-10-2017 at 03:28 PM.