M42 radiator fitment

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  • Naplm00
    E30 Mastermind
    • Nov 2008
    • 1573

    #1

    M42 radiator fitment

    Well ive searched a bit and cant seem to find the answer im looking for.

    If oyu get a M42 rad to clean up the engine bay..what hoses do i need to hookup and to where?

    the M42 rad has a upper and lower radiator hose and a hose that goes to the bottom of the tank...can i just match these to the hoses going and coming from my stock system in my late model "i" car?




    I wan tot get rid of the overflow tank in my car, ive got a manualr steering rack that is goin in and i want to remove the non-functional AC as well (its a vert)


    Also anyone knwo if i can remove the front pulley from the crank without issues? Dont think ill need it anymore
    88 325ic ~~~> Rusty and ugly
    85 E ~~~> RIP
  • Naplm00
    E30 Mastermind
    • Nov 2008
    • 1573

    #2
    My cooling system


    88 325ic ~~~> Rusty and ugly
    85 E ~~~> RIP

    Comment

    • nando
      Moderator
      • Nov 2003
      • 34827

      #3
      ZM Blue Devil just did this recently.. maybe he'll chime in. I've been thinking of doing the same thing.
      Build thread

      Bimmerlabs

      Comment

      • Naplm00
        E30 Mastermind
        • Nov 2008
        • 1573

        #4
        ah nice, ill give thoes guys a ring,

        I just finished cleaning up my manual rack..ill post some pics soon
        88 325ic ~~~> Rusty and ugly
        85 E ~~~> RIP

        Comment

        • Naplm00
          E30 Mastermind
          • Nov 2008
          • 1573

          #5
          after talking with these guys looks like you need a hose splicer to make it work and a coolant level sensor from a M44 equpped car

          I looked on real oem of the sensor (threadsinto bottom of tank blak plastic) but it wasnt listed for most cars i looked at. Anyone got a part number?
          88 325ic ~~~> Rusty and ugly
          85 E ~~~> RIP

          Comment

          • BrewCity11
            R3VLimited
            • Mar 2008
            • 2335

            #6
            Sorry, i gave you the wrong info.

            This is what you need: 61311384739
            turk@gutenparts.com

            Originally posted by Janderson
            Properly placed zip ties will hold bridges together.

            Comment

            • Naplm00
              E30 Mastermind
              • Nov 2008
              • 1573

              #7
              ah nice thanks dood
              88 325ic ~~~> Rusty and ugly
              85 E ~~~> RIP

              Comment

              • Jand3rson
                Banned
                • Oct 2003
                • 37587

                #8
                That's funny that you posted this, I want to do the exact same thing. :D

                If you wouldn't mind, post the info you got from ZM on getting it done, I'd like to do the same!

                Comment

                • 3bvert
                  E30 Enthusiast
                  • Jun 2009
                  • 1032

                  #9
                  interesting
                  I at one time thought about going the other way, with my m42 to a radiator with a different tank system, so that it would be easier to bleed

                  Comment

                  • Naplm00
                    E30 Mastermind
                    • Nov 2008
                    • 1573

                    #10
                    Well the info so far: For late model

                    Buy M42 rad from ebay or used
                    buy above part from E36 whatever (this is the coolant level sensor)
                    remove coverplate from bottom of m42 rad and insert above part (you now have coolant level monotoring)
                    Buy hose splicer fitting from auto parts store that is same size as hose come from bottom of existing resivior (square thing mounted in engine bay)
                    Install M42 rad and connect upper and lower hoses

                    This is where i get fuzzy:
                    use splicer to connect feed tube from old res to new rad mountd res?


                    Optional:

                    Remove pulley driven Fan and connect relay from low temp feed for AC electric fan. You now have no pulley fan and are using the existing electric fan to cool the engine when it is hot outside.

                    Have i got this all correct?
                    88 325ic ~~~> Rusty and ugly
                    85 E ~~~> RIP

                    Comment

                    • Wh33lhop
                      R3V OG
                      • Feb 2009
                      • 11705

                      #11
                      Is "9" in the diagram what secures the top of the radiator? My M42 rad's just sort of sitting there and secured with zipties, because the top securing points are different between the M42/late model and early model (my chassis).
                      paint sucks

                      Comment

                      • Naplm00
                        E30 Mastermind
                        • Nov 2008
                        • 1573

                        #12
                        Originally posted by 3bvert
                        interesting
                        I at one time thought about going the other way, with my m42 to a radiator with a different tank system, so that it would be easier to bleed

                        I want as little goin on in there as possible. I got a manual rack im putting in to remove the PS stuff and I am also removing the non-functional AC equipment. THE fan and cooling system would be the icing on the cake.
                        88 325ic ~~~> Rusty and ugly
                        85 E ~~~> RIP

                        Comment

                        • Naplm00
                          E30 Mastermind
                          • Nov 2008
                          • 1573

                          #13
                          Originally posted by Wh33lhop
                          Is "9" in the diagram what secures the top of the radiator? My M42 rad's just sort of sitting there and secured with zipties, because the top securing points are different between the M42/late model and early model (my chassis).

                          yea "9" is the Rad hold down in late model cars, attached with 2 bolts to the front clip and has 2 rubber bushes to hold rad in place
                          88 325ic ~~~> Rusty and ugly
                          85 E ~~~> RIP

                          Comment

                          • Wh33lhop
                            R3V OG
                            • Feb 2009
                            • 11705

                            #14
                            Originally posted by Naplm00
                            I want as little goin on in there as possible. I got a manual rack im putting in to remove the PS stuff and I am also removing the non-functional AC equipment. THE fan and cooling system would be the icing on the cake.
                            ..Wait, you actually went out and spent money on a 4.7 fuck-all turn lock-to-lock manual rack? Being a man and going with a quicker one too much to ask? ;)
                            paint sucks

                            Comment

                            • Wh33lhop
                              R3V OG
                              • Feb 2009
                              • 11705

                              #15
                              Originally posted by Naplm00
                              yea "9" is the Rad hold down in late model cars, attached with 2 bolts to the front clip and has 2 rubber bushes to hold rad in place
                              Hmm, I'll have to look into that. Zipties work, but they're not exactly the cleanest install. Thanks man.
                              paint sucks

                              Comment

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