Harmonic balancer wobble
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Car: 84 Camaro z28
Engine: 355
Transmission: Th350
Axle/Gears: 4.10
Harmonic balancer wobble
Just noticed today after putting everything together that my harmonic balancer has a little wobble to it. Turned it off after I saw that! What could cause that? have I done any damage?
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From: On TGO
Car: 88 GTA
Engine: Built 355 to install
Transmission: Built turbo 350
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From: Bright, IN
Car: '86 Bird, 96 ImpalaSS, 98 C1500XCab
Engine: LG4, LT1, L31
Transmission: 700R4, 4L60E, 4L60E
Axle/Gears: 3.73 Tors, 4.88 spool, 3.73 Eaton
Re: Harmonic balancer wobble
If the hub is on the crank properly, and the damper (it's not a balancer) is properly bolted to the hub, then it's a simple matter of your damper being worn out. The rubber elastomer bond between the inner and outer ring has deteriorated and failed. It's not uncommon with years of age/use on them. Just replace the damper.
It was probably like that before you disassembled the engine. No use worrying about whether you've done any damage; just replace it and motor on.
It was probably like that before you disassembled the engine. No use worrying about whether you've done any damage; just replace it and motor on.
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Joined: Aug 2013
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Car: 84 Camaro z28
Engine: 355
Transmission: Th350
Axle/Gears: 4.10
If the hub is on the crank properly, and the damper (it's not a balancer) is properly bolted to the hub, then it's a simple matter of your damper being worn out. The rubber elastomer bond between the inner and outer ring has deteriorated and failed. It's not uncommon with years of age/use on them. Just replace the damper. It was probably like that before you disassembled the engine. No use worrying about whether you've done any damage; just replace it and motor on.
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From: Bright, IN
Car: '86 Bird, 96 ImpalaSS, 98 C1500XCab
Engine: LG4, LT1, L31
Transmission: 700R4, 4L60E, 4L60E
Axle/Gears: 3.73 Tors, 4.88 spool, 3.73 Eaton
Re: Harmonic balancer wobble
Oh ****.......that means 1Gary is on the right track!
Yes.....hopefully you used a damper installation tool and didn't pull/push on the outer ring ?????
And DON'T pull it on by turning in the crank snout threads! Attach the installation tool and use the INSTALL TOOL THREADS to pull the damper into place on the hub.
Yes.....hopefully you used a damper installation tool and didn't pull/push on the outer ring ?????
And DON'T pull it on by turning in the crank snout threads! Attach the installation tool and use the INSTALL TOOL THREADS to pull the damper into place on the hub.
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Car: 84 Camaro z28
Engine: 355
Transmission: Th350
Axle/Gears: 4.10
Can a cracked or loose flywheel have anything to do with it? I'm also hearing a light thus/knocking noise coming from the bell housing. I used a stethoscope and placed it around the cam gear, crank gear, valve covers and oil pan. Didn't hear anything unusual. Placed it by the bellhousing and heard a light knocking noise. The noise is very inconsistent. Not like a rod knock at all.
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From: Macon, GA
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
Re: Harmonic balancer wobble
My T56 makes a hellacious racket sometimes when the clutch pedal isnt pressed in and it's in neutral. I have a suspicion that it's a flywheel runout issue and the clutch fork is bouncing around in there. But even LT1 guys complain about their factory T56 cars doing it. Just a thought... but try pressing in the clutch.
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Car: 84 Camaro z28
Engine: 355
Transmission: Th350
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My T56 makes a hellacious racket sometimes when the clutch pedal isnt pressed in and it's in neutral. I have a suspicion that it's a flywheel runout issue and the clutch fork is bouncing around in there. But even LT1 guys complain about their factory T56 cars doing it. Just a thought... but try pressing in the clutch.
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From: Philly, PA
Re: Harmonic balancer wobble
The clutch shouldn't affect your dampener, though. If the dampener is on all the way and it's new you have two rather unappealing causes:
1. Bad dampener
2. Your crank snout is bent (yes, it's exactly as bad a job to address this as it sounds)
1. Bad dampener
2. Your crank snout is bent (yes, it's exactly as bad a job to address this as it sounds)
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Car: 84 Camaro z28
Engine: 355
Transmission: Th350
Axle/Gears: 4.10
I know I have more torque than what the tranny is rated for... 😳
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