M30b34 E30 twin-screw supercharged muscle car

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  • Andy.B
    E30 Mastermind
    • Sep 2011
    • 1650

    #136
    Originally posted by LJ851
    Hmmmmmm...Casting date on the head and does it have "M90" cast into it anywhere ?
    AFAIK, M90's have a raised coolant passage on the driver side of the block from the water pump boss, across the top of the oil filter mount area, back to cylinder 5. On regular M30's, this boss ends right above the oil filter (which can be made out in some of the pictures in this thread). Also, the pistons from the pictures are dished, ensuring they are the NA 'green' catalyzed m30b34, with low compression and a conservative cam (at least compared to the 'dirty' euro m30b34 and m30b35s).

    Comment

    • Ether-D
      R3VLimited
      • Sep 2011
      • 2838

      #137
      Alright, I found a "m30" cast under the cam at the front of the head. Production date "85" and "6".

      I got the transmission mount fabbed up and locked down. I just added some material to the m20 g260 trans brace. Then I started on the driver side mount arm. This is just some 1/4" plywood for my template. Does anything bad jump out at yous about the design? There will be a chunk of 1/4" plate as a perch at the bottom.





      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

      • LJ851
        R3V OG
        • Nov 2010
        • 7918

        #138
        Originally posted by Andy.B
        AFAIK, M90's have a raised coolant passage on the driver side of the block from the water pump boss, across the top of the oil filter mount area, back to cylinder 5. On regular M30's, this boss ends right above the oil filter (which can be made out in some of the pictures in this thread). Also, the pistons from the pictures are dished, ensuring they are the NA 'green' catalyzed m30b34, with low compression and a conservative cam (at least compared to the 'dirty' euro m30b34 and m30b35s).
        Not speaking about the block, it would be obvious with the head off since the bore of an M90 is completely different.

        The only M30 head i have seen that doesn't look like the B35 or typical B34/M90 head is an uncommon M90 head that has a port shape almost like a cross between the B34 an B35, very similar to the one in ether's pic.
        Lorin


        Originally posted by slammin.e28
        The M30 is God's engine.

        Comment

        • Andy.B
          E30 Mastermind
          • Sep 2011
          • 1650

          #139
          Originally posted by LJ851
          Not speaking about the block, it would be obvious with the head off since the bore of an M90 is completely different.

          The only M30 head i have seen that doesn't look like the B35 or typical B34/M90 head is an uncommon M90 head that has a port shape almost like a cross between the B34 an B35, very similar to the one in ether's pic.
          Oh, I misunderstood. I am doing this same swap currently, and just replaced the intake manifold gaskets on my b34, and it looks the same as far as I recall. What specifically looks off to you?

          Comment

          • LJ851
            R3V OG
            • Nov 2010
            • 7918

            #140
            Originally posted by Andy.B
            Oh, I misunderstood. I am doing this same swap currently, and just replaced the intake manifold gaskets on my b34, and it looks the same as far as I recall. What specifically looks off to you?


            Disregard my posts, i've been wrapped up in M90s too long, apparently. The pictures here show standard B34 heads and manifolds.
            Lorin


            Originally posted by slammin.e28
            The M30 is God's engine.

            Comment

            • G-Man the Visionary
              E30 Addict
              • Apr 2013
              • 543

              #141
              logs... bananas... wood... this car is awesome!
              sigpic
              Streetable poly mounts, trans mounts are here!
              http://www.r3vlimited.com/board/show...ght=streetable
              '94 318i
              '07 335i
              '11 X5
              '89 325ic m30b35

              Comment

              • ThatOneEuroE30
                R3V OG
                • Dec 2013
                • 8626

                #142
                Just curious how come your making your own mounts instead of going with say qbang


                1989 325is l 1984 euro 320i l 1970 2002 Racecar
                1991 318i 4dr slick top


                Euro spec 320i/Alpina B6 3.5 project(the never ending saga)
                Vintage race car revival (2002 content)
                Mtech 2 turbo restoration
                Brilliantrot slick top "build"

                Comment

                • Ether-D
                  R3VLimited
                  • Sep 2011
                  • 2838

                  #143
                  Originally posted by ThatOneEuroE30
                  Just curious how come your making your own mounts instead of going with say qbang
                  Because part of the fun of the build for me is how inexpensively I can do it. $200 is more than I wanna give for something I can do myself.
                  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

                  • agent
                    Vice Grand Pubaa
                    • Mar 2010
                    • 7960

                    #144
                    Originally posted by Ether-D
                    Because... I can
                    Condensed that a bit for you sir.
                    Originally posted by kronus
                    would be in depending on tip slant and tube size

                    Comment

                    • Ether-D
                      R3VLimited
                      • Sep 2011
                      • 2838

                      #145
                      Originally posted by agent
                      Condensed that a bit for you sir.

                      I lolled.
                      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

                      • slammin.e28
                        שמע ישראל
                        • May 2010
                        • 12054

                        #146
                        Originally posted by LJ851
                        Disregard my posts, i've been wrapped up in M90s too long, apparently. The pictures here show standard B34 heads and manifolds.
                        I'd love for you to wrap me up into some M90s......
                        1974.5 Jensen Healey : 2003 330i/5

                        Comment

                        • Ether-D
                          R3VLimited
                          • Sep 2011
                          • 2838

                          #147
                          Ok, got a little shit did. Heres my first ever motor mount arm. Driver side, 3,5…

                          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

                          • F34R
                            sLaughter
                            • May 2009
                            • 12390

                            #148
                            You NEED to box that mount arm in...top and bottom sides.
                            ~ Puch Cafe. ~ Do business? feedback ~ Check out my leather company ~

                            Instagram: @BWeissLeather

                            Current cars:
                            ~ '87 325 M30B35 swap
                            ~ '87 535
                            ~ 01 540 Msport 6spd
                            ~ '06 X5 4.8is

                            Comment

                            • Ether-D
                              R3VLimited
                              • Sep 2011
                              • 2838

                              #149
                              Thanks for your input.
                              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

                              • Ether-D
                                R3VLimited
                                • Sep 2011
                                • 2838

                                #150
                                Well, that wasn't so bad.

                                Step 1: Adjust clocking and then make the trans brace work and hold the engine where you like it front to back and centered in the tunnel.

                                Step 2: Center crank in the radiator opening.

                                Step 3: Adjust engine height and front to back angle with the hoist.

                                Step 4: Weld.

                                Step 5: Enjoy







                                The clocking of mine engine.



                                The clearance at the rack/pan junction.



                                When I fill those welds with JB Weld and paint em, you'll never know it!


                                And did anyone spot my sweet plywood scrap jack stands?
                                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

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