Harmonic Balancer question
Thread Starter
Drifting
Joined: Jul 2008
Posts: 1,873
Likes: 27
From: Sonora CA
Harmonic Balancer question
Ok, so I have my harmonic balancer off the engine and sitting on the bench. Question; Are there any wittness marks on the balanced that show that the outer ring is oriented correctly with the hub?
Seems that there was a comment made on here a while back addressing the issue that the outer ring sometimes can "shift" making it dificult to properly time the engine.
FYI: After 107,000 miles, the cam gear was the worst I have ever seen! It actually had several broken teeth and dozens of radial crackes in the outer nylon ring and there is evidence that the chain was actually slapping the cover.
Seems that there was a comment made on here a while back addressing the issue that the outer ring sometimes can "shift" making it dificult to properly time the engine.
FYI: After 107,000 miles, the cam gear was the worst I have ever seen! It actually had several broken teeth and dozens of radial crackes in the outer nylon ring and there is evidence that the chain was actually slapping the cover.
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Yes there is. Not sure exactly but the keyway on the crank should be in the same relation to the scribe mark on the balancer. I'm not sure of the orientation though. Someone with a new one should be able to tell you the position on the two. If it is the original balancer after 107K miles and many years I would replace it anyway. Chances are the rubber is shot.
Replace the balancer and consider it an investment for a piece of mind.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Ok, so I have my harmonic balancer off the engine and sitting on the bench. Question; Are there any wittness marks on the balanced that show that the outer ring is oriented correctly with the hub?
Seems that there was a comment made on here a while back addressing the issue that the outer ring sometimes can "shift" making it dificult to properly time the engine.
FYI: After 107,000 miles, the cam gear was the worst I have ever seen! It actually had several broken teeth and dozens of radial crackes in the outer nylon ring and there is evidence that the chain was actually slapping the cover.
Seems that there was a comment made on here a while back addressing the issue that the outer ring sometimes can "shift" making it dificult to properly time the engine.
FYI: After 107,000 miles, the cam gear was the worst I have ever seen! It actually had several broken teeth and dozens of radial crackes in the outer nylon ring and there is evidence that the chain was actually slapping the cover.
I have a note on balancer/damper that reads: ... "pre-69 engines have the TDC mark 2* to the left of the keyway centerline. The '69 to '85 dampers have the TDC mark 10* to the left of the keyway centerline." ...
Just a guess ... but if your timing set is trashed & motor has 30-odd years & +100K miles ... likely OE balancer rubber bonds are weak so it also needs replacement. You can get an OE type replacements at your local parts store ... "PIONEER" is a quality damper brand and "CLOYES" is a quality timing set brand.
Thread Starter
Drifting
Joined: Jul 2008
Posts: 1,873
Likes: 27
From: Sonora CA
FYI: Damper Doctor
1055 Parkview Ave.
Redding CA 96001
(530) 246-2984 Faz (530) 246-2987
damperdoc@aol.com
Just talked to him and he quoted 49.95 to rebuild.
1055 Parkview Ave.
Redding CA 96001
(530) 246-2984 Faz (530) 246-2987
damperdoc@aol.com
Just talked to him and he quoted 49.95 to rebuild.
