m50 flywheel on m42

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  • 5Toes
    Banned
    • May 2010
    • 9836
    #1

    m50 flywheel on m42

    I have a JBR m50 228mm flywheel, designed to be direct fit with the factory clutch. Ive searched didnt find much as far as m50 flywheels.

    Anybody have first hand experience using one? My understanding is that the standard e36 325i clutch kit and my flywheel will work fine and I keep the car's current pilot bearing. no need to change starter either.

    TIA, yes I searched... not much for m50 LTW flywheel setups...
    Last edited by 5Toes; 10-02-2015, 01:27 PM.
    Tags: None
    • 5Toes
      Banned
      • May 2010
      • 9836
      #2
      bump, anybody ever done this?

        Comment

        • bmwman91
          No R3VLimiter
          • Oct 2004
          • 3128
          #3
          I have not heard of anyone doing the swap. That is not to say that it has not been done, but I think that most people go for the M20 conversion since it is well documented and known to work. You should give it a try and be our guinea pig!

          Transaction Feedback: LINK

            Comment

            • 5Toes
              Banned
              • May 2010
              • 9836
              #4
              okay sounds good to me! I will use a e36 m50 clutch and let y'all how it works out!

                Comment

                • TobyB
                  R3V Elite
                  • Oct 2011
                  • 5168
                  #5
                  Yeah, I haven't heard about it either, but in theory it's all the same stuff. In theory.
                  The M50 was just an M42 with 2 more pots... (yeah, I know, but in THEORY)

                  Measure 3 times, install once?

                  I'm curious, too.

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

                    Comment

                    • 5Toes
                      Banned
                      • May 2010
                      • 9836
                      #6
                      as long as the stack height is the same between the two different setups it should work, based on my research...

                      It will be a few months but I certainly will be taking pics for this one.

                        Comment

                        • wazzu70
                          E30 Enthusiast
                          • Jan 2005
                          • 1143
                          #7
                          I have an M50 LTW flywheel and clutch setup in my car. I used the M50 throw out bearing.

                          The catch is it does not fit in a G240 bellhousing like the M20 setup. You need to use a G250 or ZF trans from an E36.

                          I had the M20 flywheel/clutch on my car, then went to M50 flywheel/clutch/trans with custom driveshaft. FWIW I wish I stayed with the M20 setup and G240, much cheaper and easier!!! I went to the setup I did to prepare for turbo.
                          -Nick

                          M42 on VEMS

                            Comment

                            • 5Toes
                              Banned
                              • May 2010
                              • 9836
                              #8
                              was the m50 flywheel physically too big or was it the clutch kit that caused interference?

                                Comment

                                • wazzu70
                                  E30 Enthusiast
                                  • Jan 2005
                                  • 1143
                                  #9
                                  I believe it was the flywheel, but maybe it was just the pressure plate.

                                  It was too long ago to remember! Sorry.
                                  -Nick

                                  M42 on VEMS

                                    Comment

                                    • Dj Buttchug
                                      R3V OG
                                      • Jun 2010
                                      • 7633
                                      #10
                                      correct. g240 will not fit over an m50 fly. you have to run a g250 e36 trans.

                                      Turbo M42 Build Thread :Here
                                      Ig:ryno_pzk
                                      I like the tuna here.
                                      Originally posted by lambo
                                      Buttchug. The official poster child of r3v.

                                        Comment

                                        • 5Toes
                                          Banned
                                          • May 2010
                                          • 9836
                                          #11
                                          Damn :( guess the flywheel will find its way onto another one of my projects.

                                            Comment

                                            • roguetoaster
                                              R3V OG
                                              • Jan 2012
                                              • 7753
                                              #12
                                              In case someone sees this in future, will a G250 fit in an M42 powered E30 with only bolt on modifications?

                                              As far as I understand you can use the stock drive shaft but must shorten the selector rod. If this is true then perhaps someone knows of a stock rod that will work?

                                                Comment

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