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Compatibility of ancillaries M50 to M52

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    #1

    Compatibility of ancillaries M50 to M52

    Hi Guys,

    I've got an M52B28 for my swap, but minus ancillaries (a/c, power steer, alternator etc). I'm looking at buying an M50B20 (not sure if an M50TU/M52...will be checking it out soon) just for the ancillaries. I'm hoping it's from an E34, and a single VANOS so I can poach the ancillaries, OBD1 ecu and oil pan. So, does anyone know if there's any problems using ancillaries from the other M50/TU/52 series engines???

    cheers,

    Andrew.
    Tags: None
    #2
    You can swap the OBD1 stuff over but my understanding of the E34 was that the harness wasnt good for the E30 swap. Apparently the DME was in a different spot so the wires come up short.

    The stuff that bolts onto the engine stays though. In fact, you have to get a part off an E34 525i to put the M50/52 into the e30. I know they changed brands on alternators and such but I doubt that has anything to do with mounting it to the engine.
    Im now E30less.
    sigpic

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      #3
      the e34 wiring harness is usable- its just not very clean. You either need to make a box to set the ecu on your battery tray (doesnt work in a cabby) or you can push the harness through your firewall- but your ecu basically just rests in your glovebox.

      -Addis

      Doing something M50 related? -> http://www.addissimo.com
      On Myspace? ->http://groups.myspace.com/r3vlimited
      BF2142 SN = BillyGoose

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        #4
        you can use the e34 wiring harness just fine, and put the ecu in the glovebox. Just build a couple of little brackets and it will fit tucked up like the stock one.

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          #5
          Excellent! Thanks for the info.

          What about just extending the harness if it's E34? Is there a problem with doing that???

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            #6
            Well according the cheades you dont need to do it. I cant argue with him because I am just going off what I have heard.
            Im now E30less.
            sigpic

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              #7
              I dont quite believe that it'll fit anywhere near the stock location- but i half-assed it for a few months and just let it set in my glovebox.

              it'll work for sure though.

              If you want an e36 harness i've got one for you...
              :)

              Doing something M50 related? -> http://www.addissimo.com
              On Myspace? ->http://groups.myspace.com/r3vlimited
              BF2142 SN = BillyGoose

              Comment

                #8
                Hopefully today I'll find out what exactly the 2L is, and what it's from. I'll go from there.

                ECU-wise, I was intially going to go aftermarket...but if this motor I'm buying is an M50TU...I may as well use its ECU.

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