C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Replacing 94 vette harmonic balancer

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Old Jul 9, 2015 | 12:49 AM
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Default Replacing 94 vette harmonic balancer

Crank shaft hub has no key way. So does it matter how it is turned when you put it back on? Balance has a mark on it what does align with?
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Old Jul 9, 2015 | 02:39 AM
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Both balancer ring and hub/snout it bolts onto have marks on them. The balancer has a triangular mark and the hub/snout has a raised bump in between one of the three bolt arms the balancer bolts to. Crank the engine until #1 cylinder is at TDC on the compression stroke and press the snout with the raised bump at 12 o'clock on the crank. Then bolt the balancer onto the snout with the triangle mark lined up with the raised bump (at 12 o'clock also).
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Old Jul 9, 2015 | 08:52 AM
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Originally Posted by Silver96ce
Both balancer ring and hub/snout it bolts onto have marks on them. The balancer has a triangular mark and the hub/snout has a raised bump in between one of the three bolt arms the balancer bolts to. Crank the engine until #1 cylinder is at TDC on the compression stroke and press the snout with the raised bump at 12 o'clock on the crank. Then bolt the balancer onto the snout with the triangle mark lined up with the raised bump (at 12 o'clock also).
But if I remember right it only fit one way on the hub.
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Old Jul 9, 2015 | 01:22 PM
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Originally Posted by antfarmer2
But if I remember right it only fit one way on the hub.
No, since there is no keyway for the snout/hub, it could be pressed on with the "bump" at any point on the 360 degree rotation.
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Old Jul 9, 2015 | 01:32 PM
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Originally Posted by Silver96ce
No, since there is no keyway for the snout/hub, it could be pressed on with the "bump" at any point on the 360 degree rotation.
No I was talking about the balancer to the hub.
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Old Jul 9, 2015 | 01:37 PM
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Originally Posted by antfarmer2
No I was talking about the balancer to the hub.
You could be right, I never tried to put it on any other way.
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Old Aug 5, 2015 | 03:17 PM
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I had already put mine back on when I asked this question.
The car wouldn't start so I am just now getting back to this. Got it started yesterday.
Checked the hub position today. Looks like I have the bump on the hub about a quarter of a turn in advance of where it should be when number one cylinder is top dead center.
I wonder if I should pull it and reposition. Its a pain to get off.
But I don't want to tear it back down to get to it. That's a pain too.
LOL


Originally Posted by Silver96ce
Both balancer ring and hub/snout it bolts onto have marks on them. The balancer has a triangular mark and the hub/snout has a raised bump in between one of the three bolt arms the balancer bolts to. Crank the engine until #1 cylinder is at TDC on the compression stroke and press the snout with the raised bump at 12 o'clock on the crank. Then bolt the balancer onto the snout with the triangle mark lined up with the raised bump (at 12 o'clock also).
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Old Aug 5, 2015 | 03:26 PM
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That was my assumption too when I put it on.
Then I started having doubts. Why bother with balancer being balanced if the position didn't matter.
This is the first one I ever pulled that wasn't key positioned to the crank.
I don't know. Maybe the all the ones that were keyed to crankshaft was to prevent slipping.


But it seems like I remember mopar small block performance motors had a matching balance weight on the torque converter that had to be matched up to the balancer position.


Originally Posted by Silver96ce
No, since there is no keyway for the snout/hub, it could be pressed on with the "bump" at any point on the 360 degree rotation.
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