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1960 crankshaft pulley issue

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Old 04-23-2014, 08:30 PM
  #21  
Nowhere Man
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Originally Posted by wmf62
TDC mark on the 'hub'

Bill
I guess there's. Key way slot on that as well.
Old 04-23-2014, 09:26 PM
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Plasticman
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So where is the timing tab? Don't see one in the picture the OP posted. If there was a timing tab that was set at the correct diameter to match the "hub" (and the "hub" has a timing line / mark), could the engine be from a low rpm industrial application?

But without a timing tab, perhaps the "hub" is just an old (and cheap) aftermarket replacement for a damaged balancer?

Maybe the OP should check the timing cover for evidense (spot welds) of a timing tab that has been broken off (and some timing tabs were "bolt on" via the timing cover perimeter bolts).

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Last edited by Plasticman; 04-23-2014 at 09:29 PM.
Old 04-23-2014, 09:35 PM
  #23  
JohnZ
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Wherever the OP went, here's what the 1960 balancers look like - one (top photo) is for the low-horse engines, and the other one (bottom photo) is for the high-horse engines.
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Old 04-23-2014, 10:25 PM
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claudeC1'60
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Another pic here.
The hub has a TDC marked line, I highlighted it in white to be more visible and I added a ruler for fine timing setting.
As for the timing tab on the cover, Idon't have one but two, actually a U-shape plate spot welded on the cover, maybe to accomodate two different diameter hub/damper.
I don't know what is the origin of these parts.
[IMG][/IMG]
Old 04-24-2014, 11:14 AM
  #25  
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I would suggest that that hub, was used in a stationary, industrial application, like powering a generator, or air compressor, pump, air raid siren, or something else that ran at one RPM, and didn't operate in the natural harmonic frequency RPM range of the motor.

I would be curious what the block stamp pad has on it.

Doug
Old 04-24-2014, 11:44 AM
  #26  
Tom454
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Originally Posted by AZDoug
I would suggest that that hub, was used in a stationary, industrial application, like powering a generator, or air compressor, pump, air raid siren, or something else that ran at one RPM, and didn't operate in the natural harmonic frequency RPM range of the motor.

I would be curious what the block stamp pad has on it.

Doug
Good point.
Old 04-24-2014, 12:42 PM
  #27  
claudeC1'60
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Doug,
As per the stamp on the block, this engine comes from a passenger car or a truck, possibly 1958 or 1960, definitely not a corvette engine.
The crank "hub" may come from a stationary engine, that is not impossible.
Bizzare...


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Old 04-24-2014, 01:28 PM
  #28  
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Buy a damper for your motor.

Before you take the timing cover off, you can use a feeler pick to determine if there is in fact a spacer in front of the lower timing gear. I doubt there is.

Doug



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