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Harmonic Balancers

Discussion in 'The Garage' started by Muddytazz, Dec 16, 2002.

  1. Muddytazz

    Muddytazz 1 ton status

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    How often do the two halves ever spin on the rubber spacer in the middle of them? Took my burb in to have the timing and carb fine tuned, and my mechanic (really good guy, knows his stuff) says it looks like the two halves have spun. He could only get my timing set at 22* /forums/images/graemlins/shocked.gif instead of the 8 or 12 or what ever its supposed to be(but that is according to the timing marks, its actually set correctly though). He got is all running right, its just that the marks don't line up. So has anyone ever hear or had or seen these things spin?
     
  2. rugger03

    rugger03 1/2 ton status

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    yes its quit common in the diesels, i would change it out asap. it has been the speculative cause of snaped cranks in the 6.2/6.5's.
    cheers
     
  3. Muddytazz

    Muddytazz 1 ton status

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    Except i'm not running a diesel, i've got a 350. Or would that still apply?
     
  4. Beast388

    Beast388 1/2 ton status

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    Yep....it happens all the time. I would recommend an aftermarket harmonic dampner, like the Streetdampner I have on my 388. No problems at all. /forums/images/graemlins/thumb.gif
     
  5. chevyracing

    chevyracing 1/2 ton status

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    The rubber between the halves deteriorates with age and being oil soaked from the leaky front main seals that occur once in a while. You can get a fluid filled damper and that will keep that from occuring. High RPM's will also cause them to have slippage as well.

    John
     
  6. Sandman

    Sandman 3/4 ton status Author

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    That happened on my 454. Got a new one from GM.
     
  7. desertrat67

    desertrat67 Hawk Driver

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    how much do dampers cost? I have an almost stripped out bolt hole in mine and am currently using JB weld to keep it tight. I have a 454 as well. Need to replace my damn pulley too. It fell off one day. Out of ballance now(wobbly)
     
  8. Muddytazz

    Muddytazz 1 ton status

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    I priced them around and the cheapest I could find one for a 350 was at napa for $60
     
  9. HarryH3

    HarryH3 1 ton status Author

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