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Z3 Rear Crossmember Bush

Discussion in 'Z3 Roadster & Coupé' started by stevie_a, Jun 5, 2014.

  1. stevie_a

    stevie_a Zorg Guru (IV)
    Scottish Zeds

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    Can someone tell me if there is a a to z steps to replacing the rear crossmember bushes on the net to see how they are done?
     
  2. t-tony

    t-tony Zorg Expert (I)
    Supporter British Zeds

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    If you follow Lee's thread on fuel tank rattle that shows how to get the x-member off. He is replacing the bushes too.:)
     
  3. zedonist

    zedonist Guest

    Yes once you have followed lee's how to, you then need a special tool to remove the bushes, you can make this tool, or you can burn them out, I would suggest making the tool, piece of pipe, pipe cap, all thread and some nuts and washers.
     
  4. vintage42

    vintage42 Dedicated Member
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    Do you mean the big bushings for the differential carrier, also called the rear subframe? If so, I can post up a lot.
     
  5. stevie_a

    stevie_a Zorg Guru (IV)
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    Ok i will have a look thanks

    It is these ones, as you can see mine are shot.

    Video
    \/

    [​IMG]
     
  6. Brian H

    Brian H Zorg Guru (V)
    British Zeds Scottish Zeds

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    Had a look at your video Stevie, it looks as if the whole bush is moving up and down the fixing bolt, and the bush is in tact. If you look in Lee's How too the nut and bolt on the bottom of the fixing are a lot higher up than yours. Will the big nut at the bottom tighten any further? (77Nm) To do this you may have to loosen off the two 6mm allenkey bolts so that the bottom bracket will move.

    [​IMG]

    [​IMG]

    Bush nut on your car.

    [​IMG]
     
    #6 Brian H, Jun 6, 2014
    Last edited: Jun 6, 2014
  7. vintage42

    vintage42 Dedicated Member
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    Here's the bushing that most people here buy -- a relatively soft urethane:
    http://www.iemotorsport.com/bmw/Z3-suspension-steering/Z3eurearsbfrmmount.html
    The rigidity of the urethane is said to take movement and stress off the differential mounting bushing, which in turn takes stress off the trunk floor channel where popped welds frequently occur. The more solid bushing is also said to improve handling.

    Here is a home made tool for removing the bushing:
    http://forums.bimmerforums.com/foru...moval-Install-tool-easy-to-use-for-uber-cheap!

    A thread on using the tool:
    http://forums.bimmerforums.com/foru...land-Engineering-subframe-bushing-help-needed

    Bushing installation instructions:
    http://dl.dropboxusercontent.com/u/60265546/IEBushings.pdf

    And some comments on the instructions:
    http://forums.bimmerforums.com/forum/showthread.php?280802-Clint-s-IE-install-tips
     
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