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    M42 Questions

    Stupid questions aside such as: "Why would you want to do something like that?", or "Why do that when this is so much better..." I am just looking for a simple answer to a simple question. No BS.

    Can an M42 engine be hooked up inside an E30 325e/i/is engine bay and utilize the 325e/i/is tranny/clutch/flywheel? I understand there would have to be some wiring to work out but will it fit or will I need the M42 tranny/flywheel/clutch as well?

    I also understand that with the utilization of a 323i throwout bearing you can use a 325i flywheel and clutch in an M42 so thats not a big suprise to me.

    So tell me, can I do it?

    #2
    tranny wont bolt up. bellhousings are all sorts of different.
    Tenured Automotive Service Professional - Avid BMW Enthusiast

    Vapor Honing & E30 ABS Pump Refurbishment Service
    https://mtechniqueabs.com/

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      #3
      Gotta love that left coaster jargon. Thank you very much sir.

      Comment


        #4
        I grew up on the east coast thank you very much. The east coast is wicked cool. See?
        Tenured Automotive Service Professional - Avid BMW Enthusiast

        Vapor Honing & E30 ABS Pump Refurbishment Service
        https://mtechniqueabs.com/

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          #5
          Doesnt the M42B18 and the M20B20 use the same Getrag 240 gearbox????

          And the 325i uses the Getrag 260 gearbox to cope with the higher torque???

          And from I gathered on another forum the M42 in the E36 uses the Getrag250 gearbox which the E36 325i uses..... :?:
          BMWClub Malaysia
          www.bmwclubmalaysia.com

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            #6
            316i,318i and 320i uses the 240/6
            323i uses the 260/5
            325i uses the 260/6

            and some euro E30's have a ZF S5-16 but dunno for which one

            and what I know is you can't swap an 320i tranny in a 325i chassis :?

            1989 E30 318iS_______________________________1989 E30 325iC M-Technic I
            1997 E36 328iT
            1990 E30 325iT 24v SOLD
            1989 E30 325i 2.7i M-Technic II SOLD

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              #7
              I've got a friend who will be selling an m42 and tranny if you need it..

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                #8
                Originally posted by BavarianBimmer

                and what I know is you can't swap an 320i tranny in a 325i chassis :?
                But M20B25 can use 320i tranny.....
                Got a fren here did that...

                1984 E30 320i, recently sawpped in a M20B25 but using the 320i tranny.. (Getrag 240)

                But then, why can 320i tranny be used in a 325i chassis???
                Any major difference with the chassis or the gearbox?
                BMWClub Malaysia
                www.bmwclubmalaysia.com

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                  #9
                  a friend has tried a M20B25 swap in his '87 320iC and he has it done with modification a PITA job (like he said) just I don't know if the 240 can handle the torque of the 2.5 :roll:

                  Edit : I tought the 240 is a little smaller as a 260 not ???

                  1989 E30 318iS_______________________________1989 E30 325iC M-Technic I
                  1997 E36 328iT
                  1990 E30 325iT 24v SOLD
                  1989 E30 325i 2.7i M-Technic II SOLD

                  Comment


                    #10
                    Originally posted by BavarianBimmer
                    a friend has tried a M20B25 swap in his '87 320iC and he has it done with modification a PITA job (like he said) just I don't know if the 240 can handle the torque of the 2.5 :roll:

                    Edit : I tought the 240 is a little smaller as a 260 not ???
                    I supposed it can still handle the extra torque, just that the G240 won't last as long...

                    I haven't seen the 240 and the 260 side by side, so can tell whether it's the same size...
                    But I strongly feel that both has the same lenght... Or else the propeller shaft would be of different lenght....
                    BMWClub Malaysia
                    www.bmwclubmalaysia.com

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