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Thread: Rubber donut on diffs

  1. 15th October 2013, 09:29 PM #1
    *RR*'s Avatar
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    Rubber donut on diffs

    What are those big rubber donut things bolted to the diffs? I removed them when I removed my sway bars to see if they made any difference.. They don't seem to.

    ...so what are they for?
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  2. 15th October 2013, 09:33 PM #2
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    I think you maybe talking about the Harmonic balancers although I thought mine was metal??? felt and weighed like it was.
    Our Land Rover does not leak oil! it just marks its territory.......



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  3. 15th October 2013, 10:19 PM #3
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    Quote Originally Posted by dullbird View Post
    I think you maybe talking about the Harmonic balancers although I thought mine was metal??? felt and weighed like it was.
    yeah, it looks like a harmonic balancer of some kind. It's metal, but it has a soft rubber coating...

    So, I'm safe to remove them? The diffs aren't going to explode or something?
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  4. 16th October 2013, 06:43 AM #4
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    Its a "mass damper" It removes vibration, think from memory it has more of an effect when decelerating.
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  5. 16th October 2013, 08:26 PM #5
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    I dont thinkyou would notice it gone I certainly didnt on both of mine
    Our Land Rover does not leak oil! it just marks its territory.......



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  6. 17th October 2013, 04:22 PM #6
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    Harmonic balancer. They are there to balance vibrations etc in original equipment, wheels, tyre sizes etc - once you change even one of those I can't see it working positively. Mine also have gone to the recyclers with no noticed loss. Also not even an option to keep them on with QT style diff protectors.
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  7. 17th October 2013, 04:47 PM #7
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    If you remove them (and have a V8), their mounts are good for spare engine mounts - they're the same part.
    Scott
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