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  4. M20 intake manifold design thread

M20 intake manifold design thread

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  • R
    R
    Rowleym
    wrote on last edited by
    #44

    dyqugunu.jpg3uqudesu.jpg

    The inside will be ported and smoothed out, but just showing how nice it is before that.

    This is just the start of shaping the plenum. Just trying to get some excitement for me to finish lol

    96.jpg96.jpg96.jpg96.jpg

    sk8 or die

    1 Reply Last reply
    2
    • EarlE
      EarlE
      Earl
      wrote on last edited by
      #45

      I think an m42 one should be next=P

      museum sig 2earl.jpg

      1 Reply Last reply
      0
      • R
        R
        Rowleym
        wrote on last edited by
        #46

        Earl said:

        I think an m42 one should be next=P

        I would love to build one! Have a spare m42 laying around? Lol.

        I have an e36 shell ready for mockups too.

        Oh and we have 5 e30's now...

        Anyone interested in a lsx e30 with a zf 5 speed? I wonder how much I could sell one for..

        Holy tangent.

        Also that was my first ever intake runner weld. And that's welding cast alum(not cleaned even) to 6061. I'd say it turned out well! The rest of the runners look even better.

        The next manifolds will be welded with some actual cast rod. Cronatron 510t I believe it's called. And more time will be out into prep.

        I'm thinking sand blast an powder coat? Or wrinkle coat?

        96.jpg96.jpg96.jpg96.jpg

        sk8 or die

        1 Reply Last reply
        0
        • JeffJ
          JeffJ
          Jeff
          wrote on last edited by
          #47

          how is this going any updates?

          1976 530i e12
          1990 325ix e30
          1992 325i e36
          1995 740il e38
          2001 330xi e46
          ^More to come :)

          1 Reply Last reply
          0
          • R
            R
            Rowleym
            wrote on last edited by
            #48

            Zero updates from me. But hey I have a good start and I might be able to finish it but one question.

            I can mock it up using an eta head right?

            And hey Jeff wanna help me design to manufacture some velocity stacks? Haven't found a cheap way to build them yet ha.

            Sent from my iPhone using Tapatalk

            96.jpg96.jpg96.jpg96.jpg

            sk8 or die

            1 Reply Last reply
            0
            • B
              B
              B C
              wrote on last edited by
              #49

              Update: m20 manifolds look like crabs

              1 Reply Last reply
              1
              • HipMFH
                HipMFH
                HipMF
                wrote on last edited by
                #50

                Does that make you Mr Crabs?

                1 Reply Last reply
                0
                • JeffJ
                  JeffJ
                  Jeff
                  wrote on last edited by
                  #51

                  Sure we can do that

                  1976 530i e12
                  1990 325ix e30
                  1992 325i e36
                  1995 740il e38
                  2001 330xi e46
                  ^More to come :)

                  1 Reply Last reply
                  0
                  • ClassEC
                    ClassEC
                    ClassE
                    wrote on last edited by
                    #52

                    Awaiting my PNP MS box... Once it's installed and tuned to a reasonable level, intake mani is gonna happen.

                    Hopefully in time for Scooters... But likely will be done after.

                    1 Reply Last reply
                    0
                    • straight6pwrS
                      straight6pwrS
                      straight6pwr
                      wrote on last edited by
                      #53

                      this should be awesome.  the dbilas itb intake is pretty much the sexiest thing you can bolt to an e30, so anything that even aspires to it will be awesome as well.

                      Dan
                      yajsYRL.jpg.e5f350b4dfe961d76ac8b32efce2e1a6.jpg

                      1 Reply Last reply
                      0
                      • F
                        F
                        fporro
                        wrote on last edited by
                        #54

                        Aloha,

                        Am glad you guys taking on this topic and no, am not trolling, just glad to even if in a comical way manage to stir the pot.

                        running dbilas 44mm itb's and the plate that mate it to the head. it has been shown that 40mm is more than enough for 885 heads. 

                        Here's the short of it, using pvc because ...

                        - ease of manual-ability

                        - 40mm inner dia (optimal for 885 heads)

                        - it withstands n/a temps just fine

                        - you can't blow it apart with n/a psi.

                        - super light

                        - creases are minimal and super easy to fill in.

                        you guys should get transarent pvc pipes and plexy glass, make a box, experiment more I say.

                        see with your eyes what the gazillion of unanswered equations your brains can't visualize.

                        a aint a sin for sponge bob's sake !

                        1st) setup previously posted here, i concur, crap and thanks for constructive criticism.

                        2nd)  1/2/3 + 4/5/6, 13 inch runners, sounded nice, ran well.

                        3rd) 1/3/5 + 2/4/6 (video) resonance at 10 seconds, cutting off at 4200 rpms, on better ms2 itb, tune now.

                        1 Reply Last reply
                        0
                        • Bassboy3313B
                          Bassboy3313B
                          Bassboy3313
                          wrote on last edited by
                          #55

                          This is a very cool take on a custom variable length intake manifold (VLIM) that an e21 member on BF has been working on. Possibly some inspiration for you guys.

                          http://www.bimmerforums.com/forum/showthread.php?2144807-Winter-Project-2014-2015-VLIM

                          CHECK OUT >>> RAGE DRIFT DESIGNS <<< FOR DECALS AND MORE!

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                          0

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