Harmonic Balancer HELP!

Discussion in ''Da Nailhead' started by scoopyg, Apr 14, 2019.

  1. scoopyg

    scoopyg Well-Known Member

    Hello folks,

    I bought a '63 Riviera about 6 weeks ago. Nice complete car, but it hasn't been on the road for 20 years. It took some doing, but I carefully got the car started and running briefly. Once running, the crank pulley and the balancer were as loose as could be, clanking around down there to beat the band.

    So, with almost no effort, I loosened the crank bolt and took the balancer off. It was damaged. The nose of the crank looks fine, no damage. The records with my car indicate that the balancer has been replaced twice, which is somewhat puzzling. I got a replacement balancer from James Kehr in PA, but other Buick guys have expressed concern that the replacement unit might not be right for my '63 Riv. Any thoughts?
  2. Julian

    Julian Well-Known Member

    Unless the pulley bolts are different I don't see a problem. They're all externally balanced unless your displacement or make is incorrect.
  3. TrunkMonkey

    TrunkMonkey Well-Known Member

    Before you spin it and see if it wins, place or shows, contact Russ or Matt Martin at http://centervilleautorepair.com to answer any questions.

    My concern would be that even thought the crank snout "looks OK" , running it with a loose harmonic balancer may have damaged the crank key or messed up the clearances and risk further damage if you only replace the balancer if you have other balance problems, you may damage more pressing on.

    As you stated, you have already shown history of something going on.
  4. gsgtx

    gsgtx Silver Level contributor

    i would bet they never tighten the bolt to 200 ft lbs. you really need an air gun and to use the air gun you need to remove the radiator, check the bolt over careful.
  5. OZGS455

    OZGS455 Oh what a wonderful day!

    How do you know you got 200 with an air rattle gun?
    When I did mine up I took it to the max on my wrench 130 I think,
    Then I got two foot of pipe and slipped it over a breaker bar and leaned on that some more and it tightened more...still guesswork
    Its had a thorough workout and hasnt come loose
  6. gsgtx

    gsgtx Silver Level contributor

    i dont know. but i tighten all could by hand then marked it with some paint. put the air gun on it and got more out of it. never had a problem with over 10 times of doing this , with the same and different engines. thinking the shop that put it on didnt know or bother to get it close. most engines only call for 80-135 Lbs

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