Announcement

Collapse
No announcement yet.

Stuck Injector = M42 Rebuild

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Stuck Injector = M42 Rebuild

    So about a month ago, my #4 injector decided to stick open. My rings on #4 were subsequently destroyed.

    Instead of buying a used block, I decided to have it honed and replace the rings. Then, of course, I had a "while I'm in there" moment and decided to replace the rod and crank bearings as well.

    I don't have many pictures of the disassembly, but I'll post up what I have.

    Right after it "died." The champagne (well, Cava actually), was little consolation.


    Pulled the engine out by myself in a few hours... quite proud of that achievement.


    The "man-cave" that Darin (CorvallisBMW) and I have been slaving away in for weeks. Thank god for Oregon winter brews :)


    Starting to break it all down:


    ... that's all I have from the breakdown. Didn't really feel like breaking the camera out when my hands were hella greasy.





    I've owned the car for over two years, and I've literally washed it a half-dozen times. Darin said it was pissing him off, so we decided to wash, clay, polish, and glaze the paint while waiting for the block to come back from the machine shop.




    After getting the block home from the machine shop:
    I can't say enough about how awesome Brian at M&B Cylinder Head in Portland treated me. I had him hone, clean, paint, deck, and put the rotating assembly together for me. He does all of the block work for Horsepower Freaks, whose BMW M52s have put down 1022whp on the dyno. Needless to say, I was confident that he could take care of mine.




    Assembly begins:

    I primed and painted nearly every piece with high temp paint.

    Updated oil pressure relief valve:



    Lower timing case installed with chain guides:
    The paper gasket behind the lower timing case is the only paper one I'm using. Black RTV will be used in place of all other paper gaskets. I'm not risking oil leaks with 1980s technology.



    Upper and lower oil pans installed:
    The lower pan had the ridges block sanded. As you can see the engine mount arms were painted as well (obviously not the underside of the far one). Those are e28 535i mounts (stiffens the hell out of the engine).




    How the engine sits at the end of today (waiting on cam locks to get the head on):




    Intake manifold on the head:


    Black + block-sanded valve cover and matching COP bracket waiting to go on:


    Of course the oil filter housing has to match too:







    Too be continued...
    Last edited by KenC; 02-11-2010, 10:04 PM.
    Originally posted by Gruelius
    and i do not know what bugg brakes are.

    #2
    very clean rebuild man i like it, and i love the alpine
    "God created turbo lag to give V8's a chance" Taylor D.

    Comment


      #3
      looking good
      I was wondering what was happening since you first posted your problem weeks ago
      so what did it cost to have a shop do the lower end

      Comment


        #4
        It was $100 to hone, clean, paint, and deck the block. Then another $100 to install the new rings and bearings as well as the soft plugs. I don't know if I would quote this for future service, however.

        Again, I wouldn't hesitate to have M&B do machine work. GREAT SERVICE!!!
        Originally posted by Gruelius
        and i do not know what bugg brakes are.

        Comment


          #5
          That's a great price on the machine work! Build is looking nice and clean.

          Originally posted by whysimon
          WTF is hello Kitty (I'm 28 with no kids and I don't have cable)

          Comment


            #6
            I was wondering if you were going to make a thread, nice! I have some pics on my camera ill throw up later today when I get home.

            Comment


              #7
              Using RTV instead of papergaskets is going to be a big mistake.

              Comment


                #8
                Originally posted by K-Swiss View Post
                Using RTV instead of papergaskets is going to be a big mistake.
                How do you figure? If used properly, it seals better than paper. Plus the RTV compounds are much better now than they were when BMW designed the engine with the paper gaskets. You just have to know how much to use, and how to apply it.
                Originally posted by Gruelius
                and i do not know what bugg brakes are.

                Comment


                  #9
                  Bummer about the injector – ouch.

                  It’s coming back together nice and clean though.. love what you did to the oil filter housing cap.

                  Viva m42 !!
                  -----Zen and the Art of e30 Maintenance - / - Zen TOC - / - Zen Summary

                  Comment


                    #10
                    Originally posted by Simon S View Post
                    Bummer about the injector – ouch.

                    It’s coming back together nice and clean though.. love what you did to the oil filter housing cap.

                    Viva m42 !!
                    Yeah, compression was ~200, ~200, ~200, ~50! :-(

                    It's really nice being able to take my time an have everything clean and painted. My sister moved to Brooklyn and left her car in Oregon, so I've been able to do everything right and haven't had to worry about rushing to get it back together.

                    Thanks for the props on the oil filter cap. I hit the bolt head with a wire wheel too so it matches pretty well. I thought the lower pan looked pretty cool block sanded as well.

                    My thread definitley isn't as detailed as yours :).
                    Originally posted by Gruelius
                    and i do not know what bugg brakes are.

                    Comment


                      #11
                      nice work


                      -
                      Project
                      Parts for Sale
                      Feedback
                      YouTube Channel

                      Comment


                        #12


                        Question, what kind of wheel is the white one in that pic? Nice build so far, good luck.
                        1985 M10b18. 70maybewhpoffury. Over engineered S50b30 murica BBQ swap in progress.

                        Originally posted by DEV0 E30
                        You'd chugg this butt. I know you would. Ain't gotta' lie to kick it brostantinople.

                        Comment


                          #13
                          They're old school DPs. Original owner of that car put them on when new in 89.
                          Originally posted by Gruelius
                          and i do not know what bugg brakes are.

                          Comment


                            #14
                            Moar pics!!! (mostly just painting though)









                            13lb 323i flywheel, freshly resurfaced


                            Took a break to drink a few beers


                            And go to the strip club for Kenny's b-day


                            But then it was back to work






                            Last edited by CorvallisBMW; 02-13-2010, 12:02 AM.

                            Comment


                              #15
                              Props on the clean work, this thing should run forever.
                              BimmerHeads
                              Classic BMW Specialists
                              Santa Clarita, CA

                              www.BimmerHeads.com

                              Comment

                              Working...
                              X