Announcement

Collapse
No announcement yet.

e30 M3 minor rust repair.

Collapse
This is a sticky topic.
X
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    The final pictures on the hard drive are for a little port matching.
    After having the inlet ports enlarged during the head work we wanted to be
    sure there would be no slight "bottlenecks" for the incoming air
    before it reached the cylinder head..........



    This task is made a slight bit easier on the S14 engine as the throttle bodies
    and the rubber insulator blocks that fit between the cylinder head and the
    throttle bodies are all dowelled. The advantage here is that when you get each
    piece of the induction system matching it's neighbour they all line up perfect
    each time things are reassembled thanks to the locating dowels........



    first to go on was the rubber insulator blocks. Even though these were
    the larger 48mm style blocks they still needed opening up a little to match
    the exact shape of the ports..........





    Once they were a good match for the head side they were removed, flipped
    over and bolted down to the throttle bodies.......



    the throttle body side was a very close match and needed only a very slight rub....



    next up was the airbox and we had to induce a little smoke from the ears
    to figure out this one. The problem being it was all but impossible to see
    how the ports on the airbox were matching up with the ports on the throttle
    bodies. So a devilishly cunning plan was hatched. The airbox is sealed to the
    throttle bodies by 4 large o rings.........



    each of these o rings were given a smear of engineers blue ink and the
    sealing face of the airbox was covered with a little masking tape........



    nail the two together.........



    and then remove to see from the transferred blue markings how well
    things were aligning............



    as you can see above the outer two ports needed a little material removed
    to get them a better match for the throttle body ports.
    Which when all assembled should now leave a nice smooth obstruction free
    path for that incoming wind.......



    And that, you'll be delighted to hear, is the last of the engine prep photos
    I have for you, which unfortunately for me, means I now have to extract
    my thumb from my lazy ass and actually nail this engine together.

    Till next time...........

    Comment


      amazing work, thanks for the continuous updates!

      Comment


        fuck!

        Comment


          Where have you been getting all the tolerances, sizes, and torque specs from? I thought it was from the shop manual, but the shop manual doesn't seem to be this thorough.

          I'm going to be building an m20 some time in the future and it would be nice to have this wealth of info for the m20.

          Comment


            theres no simple answer I'm afraid :-(
            The large majority of tolerances and almost
            all the torque values used are available here

            (i'm not sure if this is the shop manual that you are referring to
            and were already aware of)
            Any of the other stuff is just picked up over the years of
            messing with engines I guess.
            I've tried to list all the main type's of tolerance checks you
            might do during an average engine build so that should somebody
            want to rebuild an engine other than an S14 it may make it a little
            easier to Google the information for the engine that was being built.

            The only thing I might add about using search engines for finding
            important tolerances or measurements is to use the
            "bullsh*t calculator". By this I mean if your searching for an important
            tolerance and only find 1 piece of info listing the measurement your
            after I'd be a little wary of taking this as gospel. Whereas if you find
            3 or 4 different web links all listing the same measurement
            the chances of the information being bullsh*t are reduced.

            Comment


              Originally posted by xworks View Post
              theres no simple answer I'm afraid :-(
              The large majority of tolerances and almost
              all the torque values used are available here

              (i'm not sure if this is the shop manual that you are referring to
              and were already aware of)
              Ah, the manual I was checking was the e30 repair manual. That's the info I was looking for, saved.

              As far as all the tips and tricks you go over, that's one of the main reason this thread has so much win to it.

              Comment


                Just read the entire thread ! Speechless :o
                Sticky:True e36 one touch windows DIY

                1990 M3
                1992 Mtech (S50 + 5 Lug)

                Comment


                  XWORKS this is just amazing you eserve a hug! cheers mate good luck on your project. check out my project thread if you like

                  Comment


                    Glorious will be the day when that car is complete.
                    -----Zen and the Art of e30 Maintenance - / - Zen TOC - / - Zen Summary

                    Comment


                      OMFG! YOU ARE MY HERO! holy shit sooo much to comprehend.

                      Patrick - IG:niicknac
                      RIP 1987 BMW 325is - S50'd ZF 6-speed, flared, bagged

                      Comment


                        Originally posted by e30shmobberr View Post
                        omfg! You are my hero! Holy shit sooo much to comprehend.

                        ლ(ಠ益ಠლ) y u bump thread?!?
                        -Alex

                        Comment


                          ^
                          lol
                          sigpic

                          Comment


                            Xworks, any teasers for us ?

                            for all the ones who check the thread after this bump : sorry :)

                            Comment




                              should have next update up for the weekend or early next week
                              at the latest.

                              Comment


                                ohhhhhh my god

                                dat bay
                                -Alex

                                Comment

                                Working...
                                X