Harmonic balancer
Thread Starter
Melting Slicks
Joined: Mar 2008
Posts: 2,449
Likes: 343
From: SC
Harmonic balancer
So much has been written and said about their failure. I am just curious as to how long many of them have lasted? How many miles does everyone have on an original without failure?
Just me thinking about stuff on a Friday morning!
Just me thinking about stuff on a Friday morning!
Pro
Joined: Aug 2010
Posts: 593
Likes: 9
From: San Antonio Texas
My 98 had less than 16,000 miles on it when it gave up. I will have to add however, that I suspect it had more to do with age than mileage. Rubber gets hard and fails over time. The bonding process that is used to mate the outer and inner components is a big variable also. If you have any doubts about yours......................have it checked and replace it before it does damage.
Thread Starter
Melting Slicks
Joined: Mar 2008
Posts: 2,449
Likes: 343
From: SC
My 98 had less than 16,000 miles on it when it gave up. I will have to add however, that I suspect it had more to do with age than mileage. Rubber gets hard and fails over time. The bonding process that is used to mate the outer and inner components is a big variable also. If you have any doubts about yours......................have it checked and replace it before it does damage.
Intermediate
Joined: Feb 2004
Posts: 49
Likes: 0
From: Flemington New Jersey
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Le Mans Master
Joined: Mar 2002
Posts: 5,718
Likes: 2
From: Flower Mound TX
Cruise-In V Veteran
St. Jude Contributor
Mine went bad but it was an underdrive pulley. After talking to JP at 21st Century Muscle Cars in Dallas we both agreed that underdrive pulley failure rates are high and not much is gained so we replaced with a stock GM part. I had 38k miles on the car when it failed, and probably had installed the UD pulley at around 10k miles.
Tech Contributor
Joined: Aug 2008
Posts: 2,902
Likes: 21
From: Oak Hill Virginia
You can replace it with stock or buy an underdrive pulley that will free up about 5 - 10 real horsepower. I'm going with a powerbond U/D pulley on mine...
Instructor
Joined: Sep 2011
Posts: 106
Likes: 0
powerbond balancer? where do they sell those? the guy i was refering to owns his own garage (him and his father) and theyve owned several vettes c4's and a c5 so im in good hands as far as having any work done...they used gm replacement...is the powerbond superior?