diff bushing, preferred method

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  • scottinAZ
    E30 Fanatic
    • Dec 2009
    • 1312

    #1

    diff bushing, preferred method

    as the title says, what is your preferred method for installing a new diff bushing. I have a ball joint press, but getting all of the stuff aligned is a pain in the ass to say the least. so tell me R3V, how are you doing them??
    I saved 15% on my Bimmer parts by switching to ...



  • KenC
    King of Kegstands
    • Oct 2003
    • 14396

    #2
    The bottlejack press from Harbor Freight works well. Just make sure you brace around the bushing well bc the casting likes to break.
    Originally posted by Gruelius
    and i do not know what bugg brakes are.

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    • scottinAZ
      E30 Fanatic
      • Dec 2009
      • 1312

      #3
      ok, well that was a certifiable pain in the ass...

      Turns out the housing bore wasnt round, so the bushing wouldnt start right.

      Solved the problem by chucking the bushing in my lathe and chamfering the edge down, and turning the first 1/8th inch or so to a press fit diameter (took about .010 off). this allowed me to get the bushing started, and then pressure took over and finished the job.

      Again, what a pain in the ass....
      I saved 15% on my Bimmer parts by switching to ...



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      • jlevie
        R3V OG
        • Nov 2006
        • 13530

        #4
        When changing an OE bushing I remove the cover from the diff and use a press. It is real easy to crack the ring of the housing where the bushing goes.
        The car makes it possible, but the driver makes it happen.
        Jim Levie, Huntsville, AL

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        • Jand3rson
          Banned
          • Oct 2003
          • 37587

          #5
          And when pressing in ANY kind of new bushings, don't be afraid to use a thin application of some dishsoap around the bushing, and the hole it's going in. Just a thin little layer will make things a TON easier, and when it dries, it will mostly evaporate and act as a light glue.

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          • scottinAZ
            E30 Fanatic
            • Dec 2009
            • 1312

            #6
            Originally posted by jlevie
            When changing an OE bushing I remove the cover from the diff and use a press. It is real easy to crack the ring of the housing where the bushing goes.

            This is why I took a bit of material off the leading edge of the bushing. I wanted to start the damn thing off straight. My thinking was, if it canted, that it would definitely fuck up the cover. I ended up taking the cover off, and then using the shop press. Hardest part (before turning it down) was to get it started straight. I gave up on that after about 1/2 an hour and a hundred or so tries
            I saved 15% on my Bimmer parts by switching to ...



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