harmonic vibration
Thread Starter
Cruising
Joined: Aug 2014
Posts: 13
Likes: 0
From: rochester ny
harmonic vibration
I just picked up a 76 c3, it has a vibration when you put power to it if you hold a steady speed, the vibration gets worse, ,,I the universals have been changed, we are putting it up on a lift tomorrow, is their anything I should be looking for?? thanks its bone stock
Race Director
Joined: Dec 2004
Posts: 10,332
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From: PARADISE
St. Jude Donor '09-'11-'12-'13-'14
More info.
Stick or auto?
Does it shake when you rev it in neutral?
Any shake when accelerating or decelerating?
Check for play in the output yoke on the tranny and input yoke on the rear end for starters.
Stick or auto?
Does it shake when you rev it in neutral?
Any shake when accelerating or decelerating?
Check for play in the output yoke on the tranny and input yoke on the rear end for starters.
Thread Starter
Cruising
Joined: Aug 2014
Posts: 13
Likes: 0
From: rochester ny
its an auto, the engine is smooth ,accelerating and when you hold steady, at 40-45 mph when it viberates shakes, ,it has new ujoints, when we jacked it up the pas side tire drooped lower than drivers side and the spring hanger bolt rubbed on wheel--it has had a 4wheel alignment, we asked the drive shaft people could they be out of wack?
Thread Starter
Cruising
Joined: Aug 2014
Posts: 13
Likes: 0
From: rochester ny
Thread Starter
Cruising
Joined: Aug 2014
Posts: 13
Likes: 0
From: rochester ny
its the harmonic balancer,, its loose and the rubber is falling off,,so we are going to replace it-thank you for your help
Race Director
Joined: Dec 2004
Posts: 10,332
Likes: 63
From: PARADISE
St. Jude Donor '09-'11-'12-'13-'14
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Joined: Nov 2013
Posts: 94
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From: leesburg va
When you're done with the balancer you might want to get the exhaust pipe off the crossmember hole. The exhaust resting on the crossmember will cause vibration also.
Thread Starter
Cruising
Joined: Aug 2014
Posts: 13
Likes: 0
From: rochester ny
