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Harmonic Balancer?

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  • #1

    Harmonic Balancer?

    My 360 has a fairly harsh vibration (parked, not running...) that becomes real noticeable at about 1200 RPM's and seems to abate as RPM's climb.

    I do not see anything out of wack with the balancer, although I have not looked at it while running.

    Motor mounts look OK, are tight.

    Ideas? Timing? Big Rats?
    Ernzo
    84 GW 'Louise' Bone Stock.
    Runs like a Champ.
    First Place Winner Ouray 2002 'Lowest Jeep'

    'Homer" 1949 Dodge Wayfarer Roadster

    (Both named after my Great Grandmother, Louise Homer)

    1978 Dodge B300 w/Chrysler 360 - 727

    Denver, Colorado
    Tags: None
  • #2
    My experience is that anything out of balance on the rotating assembly causing a vibration, will intensify not decrease with higher RPM's. Could it possibly something on the belt system? or maybe a bad fan clutch? bent fan blade? loose torque converter?
    ?A free man must not be told how to think, either by the government or by social activists. He may certainly be shown the right way, but he must not accept being forced into it.? Col. Jeff Cooper

    "Any fool can know. The point is to understand." Albert Einstein

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    • #3
      Yes, az, I agree in that if the balancer is out, the vibrations will not abate as the rpm's go up.

      this unit has no clutch and a flex fan. I wonder if the darn fan can be causing it? Hmmmm?

      I can also easily check the TC, I had not thought of that...
      Ernzo
      84 GW 'Louise' Bone Stock.
      Runs like a Champ.
      First Place Winner Ouray 2002 'Lowest Jeep'

      'Homer" 1949 Dodge Wayfarer Roadster

      (Both named after my Great Grandmother, Louise Homer)

      1978 Dodge B300 w/Chrysler 360 - 727

      Denver, Colorado

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      • #4
        you can always remove all the belts.... even the water pump and run it for a short period of time, 30-40 sec is all its needed to check it out.
        Michel
        74 wag, 349Kmiles on original ticker/trany, except for the rust. Will it make it to the next get together without a rebuilt? Status: needs a new body.
        85 Gwag, 229 Kmiles. $250 FSJ test lab since 02, that refuses to give up but still leaks.

        See Ouray 2013, Engine bits and Fuel and brake lines, and Body work

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