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    2 Head Questions

    In the process of replacing a broken rocker arm and leaky (oil only) HG on my stock 1987 325is with ~240k mi.

    Question #1:
    My valve stem seals are ancient and hard as a rock (and leaking tons of oil). How do I remove them? They're so hard and brittle my needlenose pliers just break them into pieces:


    Question #2:
    I have some light scratches on one of my cam journals and head. I can catch them with my nail, but they don't seem to be that significant. I've seen others with more scratched cams that need them replaced or polished, but I feel like this probably isn't that bad. What do you think?



    Thanks!

    #2
    So this isn't my fix or pics. This is a trick I found that the M70 (V12) guys use. I made a pair of this pliers and they work great. I also use a wooden dowel to put in the seal to give you a better grip.



    sigpic

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      #3
      At 210k miles, the rockers in my m20 were worn out. I replaced them and the cam as well. I just used a regular set of pliers to remove the seals.

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        #4
        Your lobes are wiping- you're due for a new cam and rockers. So the scoring on the bearings is a moot point...

        Sorry

        t
        now, sometimes I just mess with people. It's more entertaining that way. george graves

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          #5
          Thanks for the info. I was thinking of getting a new cam. You think I need all new rockers as well?

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            #6
            Best practice is new rockers when installing a new cam. Kind of like cap and rotor or oil and filter.
            Seat Shocks....I have passed the baton to John Christy from Ninestitch. Email John or Garrett at ninestitch1@gmail.com

            https://www.r3vlimited.com/board/sho...86#post4944786
            Alice the Time Capsule
            http://www.r3vlimited.com/board/showthread.php?t=360504
            87 Zinno Cabrio barn find 98k and still smells like a barn. Build thread http://www.r3vlimited.com/board/show...20#post3455220

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              #7
              its a terrible idea to not replace rockers with a new cam
              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

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                #8
                Gotcha. Thanks!

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                  #9
                  jeez depending on the value of the rest of your car keep in mind cost of cam rockers seals guides machine shop work for a skim - oh and btw those valves could be out of spec as well - you get the idea - u might be better of finding an old head on craigs list or junk yard maybe cam rockers and valves will still be ok so u just put it on and rock n roll - again not knowing the shape of the rest of the car - im jus sayin u talkin money bro !

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                    #10
                    isnt the face of the aluminum cam journal scorn ? are those 2 lines suposed to be there ? idk

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