Harmonic Balance
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New User
Joined: Dec 2003
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Harmonic Balance
I have a 79 Ford F100 302 2WD that was donated to me 3 years ago.
The harmonic balancer breaks every year. I've had to replace it 3 times in 3 years - about 11 or 12 months apart.
What could be causing the strain on the harmonic balancer that it keeps going out? Is there a diagnostic test that I can use to eliminate some of the possibities?
The harmonic balancer breaks every year. I've had to replace it 3 times in 3 years - about 11 or 12 months apart.
What could be causing the strain on the harmonic balancer that it keeps going out? Is there a diagnostic test that I can use to eliminate some of the possibities?
Lead Driver
Joined: Sep 2003
Posts: 5,241
Likes: 3
From: Other side of the sunrise
I don't know alot about the 302's. Some engines are balanced internally. I think the small block 400 is internally balanced. You might try to make to a ford dealer and ask one of the mechanics if the engine you have is balance internally as the harmonic balancer is an external balance which might cause a problem????? Wish I knew more to help.
Good Luck, Tim
Good Luck, Tim
Laughing Gas
Joined: Dec 2003
Posts: 900
Likes: 3
Hello. I have a 79 F100/302 that did the same thing. The balancer broke in three pieces at the hub where it slides on the crank. I was missing a large washer that holds the balancer to the crank. I bought a new balancer/bolt/washer from Ford, used loctite on the bolt and snugged it down with an impact, and It's been fine ever since. (that was three years ago) If the belts are too tight, that might put a strain on the balancer hub as well.
