Poly Bush diff mounts

Discussion in 'General maintenance, upgrades and modifications' started by Ticker, Jul 31, 2019.

  1. 31 Jul 2019 at 2:41 PM #1
    Ticker

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    Guys,

    Anyone know where I can buy an upgrade poly bushes for me diff

    Dave
     
  2. 31 Jul 2019 at 3:09 PM #2
    bimmermen

    bimmermen On the path

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  3. 2 Aug 2019 at 9:49 PM #3
    klan8456

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    Not recommended unless it’s a dedicated race / track car.
     
  4. 2 Aug 2019 at 10:30 PM #4
    bimmermen

    bimmermen On the path

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    klan explain why ??
     
  5. 3 Aug 2019 at 9:17 AM #5
    klan8456

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    General consensus is that they will clunk too much on a road car. Better off with new bushings (the entire rear cover) from BMW, and the revised bolts.
     
  6. 3 Aug 2019 at 11:04 AM #6
    Alex E46

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    Get OEM, when you get the part, you will see its a proper solid bit of kit anyway - I see no need to use a poly bush.
     
    m3rosco likes this.
  7. 3 Aug 2019 at 11:49 AM #7
    Nunga

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    OEM diff bushes were the recommendation to me too, and it made a massive difference replacing mine after 57,000 miles.
     
  8. 4 Aug 2019 at 7:03 AM #8
    DD M3

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    OEM is best for road car, poly are noisy as hell.
    I have high quality AKG poly for my track car. Stay away from powerflex. I had one fail with only 2000 miles.
     
  9. 13 Aug 2019 at 11:14 AM #9
    Iain

    Iain Staff Member Moderator

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    Poly diff mounts transmit huge amounts of noise, more than any other bush replacement on the car.

    Unless you are ok with that, don't do it.
     
  10. 13 Aug 2019 at 10:31 PM #10
    m3rosco

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    As above, stock to oem!!
     
  11. 13 Aug 2019 at 10:35 PM #11
    alexlex85

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    I have upgraded my e46 to polybushes and couldnt tell the difference in noise. That was sub frame and diff.
     

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