Rocker Arm shaft stuck

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  • Quackity
    Noobie
    • Aug 2021
    • 6

    #1

    Rocker Arm shaft stuck

    Disassembling a 2.7 head and trying to get the rocker arm shafts out but they are not budging. Got them about 1 inch out and now no matter how hard I whack them they wont budge. There is no tension on any of the rockers, it seems like there is some dirt binding it up but not sure it would cause 0 movement.
  • 82eye
    E30 Mastermind
    • Jan 2009
    • 1847

    #2
    you can use a socket extension as a drift. the rockers from cyl 1 are removed first. how to strip an m20 head.

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    • Quackity
      Noobie
      • Aug 2021
      • 6

      #3
      I am using an extension my problem is that its not moving.

      Comment

      • digger
        R3V Elite
        • Nov 2005
        • 5911

        #4
        probably a burr, score,, build up or the end is mushroomed . need go back a bit and inspect for damage. if you keep pounding it something will break
        89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

        new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

        Comment

        • nando
          Moderator
          • Nov 2003
          • 34827

          #5
          have you removed spring tension from all the rockers? if there are any pressing on the face of a cam lobe, it's going to be tough to get out.

          there's really no reason to use a hammer on them. that's why a lot of them end up messed up..
          Build thread

          Bimmerlabs

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          • Quackity
            Noobie
            • Aug 2021
            • 6

            #6
            No tension on any of the rockers, I tried pushing it the other direction and it wont move at all.

            Comment

            • 82eye
              E30 Mastermind
              • Jan 2009
              • 1847

              #7
              Originally posted by Quackity
              No tension on any of the rockers, I tried pushing it the other direction and it wont move at all.


              do have a pic ?
              check to make sure you didn't have a rocker walk off the cam lobe. it happened to me on reinstall.
              Last edited by 82eye; 10-05-2021, 05:06 AM. Reason: lobe

              Comment

              • Northern
                R3V Elite
                • Nov 2010
                • 5038

                #8
                How clean is the rocker shaft? Oil varnish buildup is enough to cause issues
                Originally posted by priapism
                My girl don't know shit, but she bakes a mean cupcake.
                Originally posted by shameson
                Usually it's best not to know how much money you have into your e30

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                • Quackity
                  Noobie
                  • Aug 2021
                  • 6

                  #9



                  Got the intake side out with a lot of cleaning and tapping, however the exhaust side is nearly completely stuck. I'm gonna replace it now but I cant get it out. Using a clamp to try and push it back in didn't work no amount of whacking will make it move.

                  Comment

                  • e30vert
                    E30 Mastermind
                    • Jan 2005
                    • 1789

                    #10
                    Your going to have to heat the rockers with a torch so they expand.

                    Comment

                    • ADEN
                      Mod Crazy
                      • Feb 2008
                      • 620

                      #11
                      I had a terrible time with these shafts, i got one rocker free rotate the cam tried to hammer the shaft out another one returned to place and jam the shaft again.

                      Comment

                      • Vincenze
                        E30 Modder
                        • Apr 2019
                        • 914

                        #12
                        You can file the ends of the shafts. They can be mushroomed after hammering on the ends.

                        You can easily score rocker arm inner bearing surfaces.

                        Comment

                        • Quackity
                          Noobie
                          • Aug 2021
                          • 6

                          #13
                          Got it out with a lot of heat and beating. Think I can reuse this rocker shaft with some filing as suggested earlier? Thanks all for the help

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