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Old 07-19-2004, 06:34 PM
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harmonic ballancer???

i know this may be a stupid question but what is a harmonic balancer and what is its purpose in an engine? i'm planning on building a 350 for my 66 nova and would like to know if i can use the stock balancer of if buying an upgraded one would be advisable.
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Old 07-19-2004, 07:50 PM
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It helps dampen vibrations and harmonics put out by the engine (also known as a harmonic dampener). It helps to keep things balanced and vibrations minimal as to extend engine life.

There are aftermarket ones which supposedly perform better at absorbing vibrations tho I have never had any experience with them. I would recommend checking the rubber on your old one and making sure its not cracking or creeping out. It should be a solid even bead all the way around. Being that its that old tho I would be tempted to just replace it and save the worries.
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Old 07-19-2004, 10:38 PM
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okay, so i should only think about replacing the harmonic balancer if it looks like it needs to be. So if i replace it just to upgrade i shouldn't expect a performance jump?
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