Radiator Choices M20, M50 or M42?

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  • amcink
    Mod Crazy
    • Jan 2012
    • 788

    #1

    Radiator Choices M20, M50 or M42?

    What to use for an M50 swap and which one will provide more space for the OEM fan clutch.
    Also How do I attached these (M50 and m42) to the body?
  • justin_l_
    E30 Enthusiast
    • Jun 2007
    • 1079

    #2
    M50 radiator is the same as a late model m20. It rests on the radiator support on the bottom and the top has a bracket the bolts to the top of the radiator support. I'm not sure on the m42. They all have the same clearance afaik.

    Comment

    • mpowerful
      E30 Fanatic
      • Jul 2013
      • 1273

      #3
      Use euro diesel fan. It give nearly same clearance as stock. 5-8mm or so.

      Comment

      • Mistawall
        Grease Monkey
        • Dec 2013
        • 319

        #4
        I plan on using my m42 radiator

        Sent from my SCH-I545 using Tapatalk
        my build thread http://www.r3vlimited.com/board/showthread.php?t=309778

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        • e30austin
          I waste 90% of my day here and all I got was this stupid title
          • Sep 2010
          • 15382

          #5
          If you don't give a shit about your head gasket or cyl head, use an M42 radiator. If you do, get a real radiator (M20, M50, Z3M, etc) and be done.
          '70 911s | '72 2002 | '88 M5 | '89 330is | '89 M3 | '95 911 | '02 M5 | '04 RR HSE

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          • justin_l_
            E30 Enthusiast
            • Jun 2007
            • 1079

            #6
            If you are in a warm climate stay away from the m42 radiator. Personally I love in maine but still run a mishimoto e36 rad.

            Comment

            • amcink
              Mod Crazy
              • Jan 2012
              • 788

              #7
              Originally posted by mpowerful
              Use euro diesel fan. It give nearly same clearance as stock. 5-8mm or so.
              part number for the diesel fan and the clutch used on your swap _ I just saw the link and I like it

              Comment

              • mpowerful
                E30 Fanatic
                • Jul 2013
                • 1273

                #8
                The clutch is same as basically everything else. Mine was new on shelf so i grabbed it but it was for an e39 540i. The e36 or m20 clutch will work. The fan pn is 11522243303. I got it from thebmwpartstore.com for 65 shipped which is about cheapest i could find it new.

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