Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks



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#432177 10/07/19 04:10 PM
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Backyard Mechanic
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How is the best way to install the flywheel pulley? does it have to be heated? If heat is required, how is the best way to heat it?

Filling Station - Chevrolet & GMC Reproduction Parts


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Hello Steve Smith,
Please indicate what year and model Chevy you are working on with every post to eliminate any confusion. I consider the flywheel to be associated with the clutch and pressure plate and has the starter ring gear on it. The harmonic balancer may be what you are referring to. That requires a puller to remove. To install, I think you could carefully tap it on with wood dowel and mallet. Others will know better than I.

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I apologize for not making myself clear. I am talking about the pulley that goes on the front of the crankshaft of a 1930. I just can't see myself hauling off and hitting it. Getting the key lined up looks like it could be a problem too. There must be a better way. Any suggestions?

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When I put the crankshaft pulley back on the front of my '28 engine, I heated the pulley up to 500 degrees on my BBQ, got it to the block quickly, and it slipped onto the crank easily.

Cheers, Dean


Dean 'Rustoholic' Meltz
old and ugly is beautiful!



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Yep, heat the female end to expand it and cool the male end to shrink it. Used to regularly put pressed balljoints in the freezer when I worked at a shop years ago and install into a heated control arm. Add some synthetic lube and it goes together easy.Did my 216 cam gear this way too after putting cam in freezer.

BBQ is a great idea! Very controllable.I like it better than breaking out the Oxy /Acet torches.

Last edited by canadiantim; 10/07/19 07:31 PM.

1938 Canadian Pontiac Business Coupe (aka a 1938 Chevy Coupe with Pontiac shaped front sheet metal - almost all Chevy!)
1975 4-speed L82 Vette
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Great ideas. Thank you

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If you hammer it on be sure to install bolts to secure the weight to the pulley or the spring washers will be bent. Also use a wood block so you don't have to hammer directly on the pulley/weight assembly. I am not 100% sure that 500 deg. will not change the spring tension on the washers?


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I apologize for my ignorance in advance, but what "spring washers" are you talking about? I am really confused now.

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The 1930 and newer Chevys have a harmonic balancer with two major pieces, a V-groove pulley and a weight. They are riveted together with springy washers. The weight has two threaded holes that can be used with a puller to remove the assembly. When installing (and maybe heating) bolts are installed to firmly hold the two major parts in place. Otherwise the two parts can be loosened making them less effective at reducing vibrations.

Prior to 1930 only a pulley was attached to the front of the crankshaft.


How Sweet the roar of a Chevy four!
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Thank you Chipper. I understand now.


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