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Harmonic balancers????

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Old Nov 17, 2008 | 05:45 PM
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Default Harmonic balancers????

Hey Guys,

I'm in the market for a harmonic balancer. I've heard several people telling me what not to use but none telling me what will work better. I have a 98 Vette. I want it to stay driveable because it is my primary transportation but I also appreciate the small gains of buying the right one. I do use A/C and don't want to lose the alternator power. Can any of you recommend a harmonic balancer that will give me any increase in performance without losing the driveabilty. Thanks for your help. I'm not going to use the OEM so don't worry about that.

Greatful for any help,
Gary
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Old Nov 17, 2008 | 05:50 PM
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I have a Powerbond 25% underdrive, and I have never experienced any problem with A/C, charging, or overheating.
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Old Nov 17, 2008 | 06:20 PM
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I just installed the Powerbond unit. No charging issues and it doesnt slow down the AC compressor anyway. Its the same balancer as the SLP underdrive unit.

You wont feel any gains, this is done either in conjunction with a cam change or other engine work - or when the stock bolt or balancer became problematic.

Last edited by warren s; Nov 17, 2008 at 06:35 PM.
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Old Nov 17, 2008 | 07:26 PM
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What's the difference between steel and aluminum and why would I buy or not buy aluminum? It would seem to make the car spin up quicker because of the lighter weight, is this correct?
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Old Nov 17, 2008 | 08:09 PM
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Summit racing makes a very high quality low price 25% pulley for our cars. I've ran one for over a year with zero problems, I recommend it.
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Old Nov 17, 2008 | 08:41 PM
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Originally Posted by GaryRedVette
What's the difference between steel and aluminum and why would I buy or not buy aluminum? It would seem to make the car spin up quicker because of the lighter weight, is this correct?

The weight differance is very small and some companies advertise 10 to 12 horsepower increase, but it more likely under 5. The gain is simply less drag by spinning the accessories slightly slower. This is generally not a stand alone mod.

I dont know what differance having a steel or alum balancer would make, if you drop either one it cant get damaged.
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Old Nov 18, 2008 | 11:41 AM
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Originally Posted by GaryRedVette
What's the difference between steel and aluminum and why would I buy or not buy aluminum? It would seem to make the car spin up quicker because of the lighter weight, is this correct?
Aluminum is for race only, what ever balancer you chose do yourself a favor and pin it to the crank.
Remember the function of the balancer is to dampen harmonics in the crankshaft so it needs to be of the proper weight.
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Old Nov 19, 2008 | 07:15 PM
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Chevy offers an upgraded version that is liquid filled. Do you know anything about those?
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Old Nov 25, 2008 | 07:25 PM
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I got the harmonic balancer you recomended. Is the torque really 240 ft/lbs for the bolt? If so, that a strong bolt, huh? I guess it has to be that high because there is no pin in it. What if you pin it?
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