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Harmonic Balancer problem

This is a discussion on Harmonic Balancer problem within the External Engine forums, part of the LSx Technical Help Section category; Im in the middle of my heads and cam swap and when I removed my harmonic balancer one of the ...

  1. #1
    Member One_Bad_TA's Avatar
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    Harmonic Balancer problem

    Im in the middle of my heads and cam swap and when I removed my harmonic balancer one of the tabs that the puller grabs onto on the back of the pulley has broken off. Can I still use this or should I get a new one? Im just worried it will be off balance and cause problems. Thanks

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    cutting and welding mark21742's Avatar
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    I'd definately get a new one

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    Time for an Under Drive Pulley

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    The words "Harmonic Balancer" Say it all.. Damage to the balancer can cause vibrations in the crank which could lead to main bearing failer and/or rod bearing failer. "Egged" out cylinder walls..etc.etc.. I would replace that @ your earliest....
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    Veteran 0rion's Avatar
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    yeah, you'll need another one. I would just do an underdrive pulley while you have everything apart. Another thing is to be careful putting the new pulley back on. I would make an install tool and "push" it on instead of trying to pull it down with the stock bolt or a longer than stock bolt. You risk pulling the threads out of the crank doing it that way. If you want to put a stock pulley back on there I have my old stock one that I'd sell you but like I say, as long as you have it apart do an underdrive pulley.

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    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Quote Originally Posted by 0rion View Post
    yeah, you'll need another one. I would just do an underdrive pulley while you have everything apart. Another thing is to be careful putting the new pulley back on. I would make an install tool and "push" it on instead of trying to pull it down with the stock bolt or a longer than stock bolt. You risk pulling the threads out of the crank doing it that way. If you want to put a stock pulley back on there I have my old stock one that I'd sell you but like I say, as long as you have it apart do an underdrive pulley.
    Or worse imho snapping it off in the crank...

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    you can rent the install tool from auto-zone.

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    Quote Originally Posted by garygnu65 View Post
    you can rent the install tool from auto-zone.
    No, the install tool they have is worse than using the stock bolt. I used a length of all-thread, 25 washers, and a nut to do the job properly.

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    Member One_Bad_TA's Avatar
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    My plans are to Procharge it so I dont want to spend money on an under drive pulley just to take if off again. Im just gunna get a stock balancer in the mean time. Can you go into more description about the "correct" install procedure or what I have to do? thanks

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    I can not find any thread stock around here to make my own install tool.

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    Veteran 0rion's Avatar
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    Quote Originally Posted by garygnu65 View Post
    I can not find any thread stock around here to make my own install tool.
    how fast are you needing it? I have 1 tool made that I used on mine I'd sell you....PM me an offer. Or I can just cut you a length of threadstock here if you have a place that has nuts for it....you'd need 3 16mmx2.0 pitch and a stack of washers that'll fit over the thread stock.

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