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    Hydraulic lifter rebuild

    So while my block and head are at the machine shop I decided to rebuild my lifters.

    I Did some researching and found out how to get them apart but I've hit a road block.

    After smacking them on a wood block and getting the center bit out, everything I've read says the piston in the center part should just pull out easily. However it seems that there is a clip that is holding the piston in on these.

    Has anyone rebuilt theirs? How did you get them apart?

    ​​​​​
    Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

    Originally posted by TimKninja
    Im more afraid of this thread turning into one of those classic R3v moments, where Pizza gets delivered.

    #2
    I'd imagine that they end up much like a brake caliper piston, and if you shoot some air in the right orifice it would pop out. That's not from actual experience.

    Also, why rebuild when the cost of new ones is generally fairly low, especially if you go with the VW units?

    Comment


      #3
      Mostly because I don't know about the vw units. Please educate me.
      Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

      Originally posted by TimKninja
      Im more afraid of this thread turning into one of those classic R3v moments, where Pizza gets delivered.

      Comment


        #4
        Self educated...

        Please verify if the linked part is the correct one:

        https://www.fcpeuro.com/products/aud...wer-050109309h
        Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

        Originally posted by TimKninja
        Im more afraid of this thread turning into one of those classic R3v moments, where Pizza gets delivered.

        Comment


          #5
          Click image for larger version

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          For information puroses... This is the retaining ring/clip that I'm talking about. I've already got the centers out of the larger housing. Based on what I've seen in videos and stuff I think that ring usually stays in the larger housing and the spring clip comes out of it. This allows the piston to come out (left of my pointer) easily and the internals to be cleaned properly.

          However in the 9 that I've taken apart so far the ring seems to be rather securely attached to the center. I'm leaning towards using the vw units now anyway.
          Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

          Originally posted by TimKninja
          Im more afraid of this thread turning into one of those classic R3v moments, where Pizza gets delivered.

          Comment


            #6
            I can't immediately verify the PN for the lifters, but there is/was a spec comparison out there.

            Now I sort of want to take an old lifter apart just to see how it works.

            Comment


              #7
              https://youtu.be/ySf0r8GGMOY
              pretty good video on it.

              https://youtu.be/rk1a0Sx-8WM
              This one is for an e36 unknown engine, when he knocks it out it kinda looks like the retaining ring just stays in the outer piece.
              Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

              Originally posted by TimKninja
              Im more afraid of this thread turning into one of those classic R3v moments, where Pizza gets delivered.

              Comment


                #8
                After looking at that second video again I'm starting to think they may just be an older design in the m42.
                Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

                Originally posted by TimKninja
                Im more afraid of this thread turning into one of those classic R3v moments, where Pizza gets delivered.

                Comment


                  #9
                  Update on the vw lifters (a lot of the m42club links are broken so I want to confirm the info here.)

                  The part number (VW - 050109309H) that I Link above is externally identical to the m42 lifters. 26mm long and 35mm diameter. The oil groove is also in the same place.



                  Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

                  Originally posted by TimKninja
                  Im more afraid of this thread turning into one of those classic R3v moments, where Pizza gets delivered.

                  Comment


                    #10
                    Originally posted by NC325iC View Post
                    Update on the vw lifters (a lot of the m42club links are broken so I want to confirm the info here.)

                    The part number (VW - 050109309H) that I Link above is externally identical to the m42 lifters. 26mm long and 35mm diameter. The oil groove is also in the same place.


                    Have you fit them yourself?
                    sigpic

                    (clicky on piccy to get to thread)

                    Comment


                      #11
                      I will when I get the head back from the machine shop
                      Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

                      Originally posted by TimKninja
                      Im more afraid of this thread turning into one of those classic R3v moments, where Pizza gets delivered.

                      Comment


                        #12
                        I've been using the 35mm "VW lifters" in m42's and early m50's for years (later 4v heads from BMW use 33mm) - they aren't actually "VW" lifters, the same dimensions are used in a lot of OHC heads of differing mfgr's (even the GM 3.4 DOHC). Lifters are an inexpensive wear item, not sure I would bother with "rebuilding" them.
                        john@m20guru.com
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                          #13
                          Yeah, I was trying to do the cheapest refresh possible but that has gone out the window...
                          Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

                          Originally posted by TimKninja
                          Im more afraid of this thread turning into one of those classic R3v moments, where Pizza gets delivered.

                          Comment

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