oil return tube question.

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  • mathillois
    Member
    • Sep 2012
    • 71

    #1

    oil return tube question.

    hey r3vers, replacing my starter and decided to take off the intake manifold in order to make it easier on myself since i am alone. i am hoping for someone to help me with the seals of the oil return tube. from what i did and saw, there are three seals/ o-rings that go over it when assembled. am i correct or wrong? because i had three. when i went to a local parts store, they only had 2 in there system. last question: is there specific order/ location (top or bottom) that each seal should go in? or can i just place either one in either the top or bottom?
  • LagunaSecaBlue
    Grease Monkey
    • Sep 2013
    • 360

    #2
    One on top and one on bottom. Use a zip tie to compress the spring to make it easier on you.

    #AZE30
    1991 318i
    1989 325i
    1989 335i

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    • digger
      R3V Elite
      • Nov 2005
      • 5911

      #3
      its a crank case vent tube, the oil returns from head to block via 6 holes in the head and block
      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

      • mathillois
        Member
        • Sep 2012
        • 71

        #4
        thanks for the info guys!!!

        Comment

        • essi1553
          E30 Addict
          • Apr 2012
          • 440

          #5
          Ok look... 2 o-rings, 1 washer.

          O-rings are identical, you should have a washer above the O ring that gets installed on the bottom of the tube.

          Comment

          • mathillois
            Member
            • Sep 2012
            • 71

            #6
            Thank you!!!!!!!
            Originally posted by essi1553
            ok look... 2 o-rings, 1 washer.

            O-rings are identical, you should have a washer above the o ring that gets installed on the bottom of the tube.

            Comment

            • essi1553
              E30 Addict
              • Apr 2012
              • 440

              #7
              Anytime, the zip tie trick mentioned above is great advice as well.

              Comment

              • digger
                R3V Elite
                • Nov 2005
                • 5911

                #8
                realoem lists 2 washers and two o-rings
                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

                • CabbE30
                  R3VLimited
                  • Aug 2009
                  • 2358

                  #9
                  Originally posted by digger
                  realoem lists 2 washers and two o-rings
                  1 washer, 2 o-rings. Washer goes between the spring and the bottom oring and is absolutely necessary in order to prevent the spring from chewing thru the oring.

                  OP don't forget new IM gaskets

                  Comment

                  • g.ruff561
                    E30 Fanatic
                    • Mar 2009
                    • 1261

                    #10
                    I saw an engine that had the return tube JB Weld. Any pros or cons to doing this?

                    Comment

                    • Ether-D
                      R3VLimited
                      • Sep 2011
                      • 2838

                      #11
                      cons:
                      you can't remove your intake manifold
                      you are a terrible redneck

                      Pros:
                      It don't leak no more
                      Originally posted by Andy.B
                      Whenever I am about to make a particularly questionable decision regarding a worryingly cheap diy solution, I just ask myself, "What would Ether-D do?"
                      1987 325iS m30b34 Muscle car (Engine electrical phase)
                      ~~~~~~~~~~
                      I was born on 3/25…
                      ~~~~~~~~~~

                      Comment

                      • g.ruff561
                        E30 Fanatic
                        • Mar 2009
                        • 1261

                        #12
                        I saw the car at a meet some years ago. I never said anything to the owner but I was always like, WTF....... Lmao. Just thought of it when I saw this thread. The guy was bragging about how hard a vacumn leak it was to find and r&r. So it hit it with the JB.

                        Comment

                        • mathillois
                          Member
                          • Sep 2012
                          • 71

                          #13
                          hhaahaha lmfao! you guys are funny

                          Comment

                          • Nutzy
                            Advanced Member
                            • Sep 2011
                            • 102

                            #14
                            I wind the spring over the lip of the tube. No zip ties, dead easy.
                            -----------------
                            89 M50B28 turbo
                            LINKY
                            -----------------

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