Flywheel and Harmonic Balancer Offsets
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Senior User
Joined: Jun 2003
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From: Edmonton Alberta Canada
Flywheel and Harmonic Balancer Offsets
Is there different Flywheel and harmonic balancer weight offsets for the 351w?, I just installed a windsor into my truck, and installed a flywheel out of an 83 Bronco, now, she has a nice viberation coming from the engine, oh yeah, and the engine is early-mid 70's so I'm wondering if there is different weight/offsets fit these engines?
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Senior User
Joined: Jun 2003
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From: Edmonton Alberta Canada
Flywheel and Harmonic Balancer Offsets
I hope not, I got the flywheel from a wrecking yard, they said that it was from a windsor, now.... the ultimate question, can I change the harmonic then if it is the wrong one, to the 50 oz weight, and make it work, or do I have to change the flywheel again, I just installed this engine yesterday, and I guess this time I'll have to pull the transmission his time around if I have to 
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Senior User
Joined: Jun 2003
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From: Edmonton Alberta Canada
Flywheel and Harmonic Balancer Offsets
but.... if I have a 50 oz flywheel, can I put a 50 oz harmonic balancer on the help it, or should I go and pull the trans and replace the flywheel with the proper one, I would like to go the first route, because I don't have to drop the trans.
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Joined: Jun 2003
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From: Edmonton Alberta Canada
Flywheel and Harmonic Balancer Offsets
cool, I really hope that does it, I don't feel like pulling the trans, becasue someone screwed up and gave me the wrong Flywheel
Thanks Tom
Thanks Tom
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Joined: Apr 2002
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From: Kansas USA
Flywheel and Harmonic Balancer Offsets
you must match the flywheel and harmonic balancer to the imbalance of the crankshaft. If you have a 351w the imbalance of the crankshaft is 28oz. A 50oz flywheel & 50oz balancer will not balance a 28oz imbalance crankshaft. If you run the out of balance condition for long it will destroy your bearings.
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Joined: Oct 2002
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From: Lincoln NE
Flywheel and Harmonic Balancer Offsets
NAPA and O'reilly's have them for under 50 bucks if your in a pinch. Just out of curiousity, what does a salvage yard get for a flywheel?
Another way to look at it: A $50 flywheel is cheaper than a new motor.
Another way to look at it: A $50 flywheel is cheaper than a new motor.
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Senior User
Joined: Jun 2003
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From: Edmonton Alberta Canada
Flywheel and Harmonic Balancer Offsets
I picked my flywheel up for $40 at the local wreckers, I'm trying napa to see what they cost, I in some ways would like to go a new one, but... if I can find one for cheaper at a wreckers, then I'll go that route, which right now is like finding a needle in a haystack up here in Alberta
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Senior User
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From: Edmonton Alberta Canada
Flywheel and Harmonic Balancer Offsets
another thing, I checked the casting #'s on both the Flywheel and the Harmonic Balancer, wiht Ford, the harmonic fits a 81-83 Ford 351w, and the Flywheel, well you guessed it, fits a 81-83 302, hmmm me thinks that, that might be my problem right there
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