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91 m20b25 engine into 86 325es..questions...

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    91 m20b25 engine into 86 325es..questions...

    We have a 91 m20b25 to put in an 86 325es. The m20b25 harness is cut at the c101 connector, so it needs a new harness, or spliced. Since it doesn't have a provision for the C104 I'm thinking it's easier to swap in a 87 harness.

    So I starting making a conversion chart. As you can see I've found nothing for the 86 325es (with the c101). I read they are identical. Is this true? Does my 87 325i wiring look correct?




    On the other hand, if the 87 harness is not a direct wire-up, and it would require splicing anyway, we might as well just throw the extra wires on when we do the splicing, per the following:

    Pin # 3 from c104 to Pin 8 on the c101 of your 89(Yellow/White or White/Black wire)
    Pin #2 from the c104 to the + terminal on the coil(Green wire)
    Pin #1 from the c104 to pin 9 on the c101(black wire)

    Is that correct? I know some connectors would be different such as coolant level, oil level, maybe some others as well. That's easy to correct later. The goal is to get it running.


    I know the cooling system can be switched over to the early style, and as far as I know we can use the m20b27 single mass flywheel, clutch kit, etc... (it's all fairly new), is this correct?

    Anything I'm forgetting to address?
    85 325e m60b44 6 speed / 89 535i
    e30 restoration and V8 swap
    24 Hours of Lemons e30 build

    #2
    Justin, email me at frank.macaluso@lmco.com when you get a chance, I'm going to give you an excel spreadsheet which I think will help you out...
    Recent Rebranding!!
    Visit Garageaholic for all of your E30 Swap Needs!
    E30 SM62/S62
    E30 M60 V8
    E30 M30 Big 6!




    Check out this E36 N54 Swap Build
    Instagram.com/garageaholic
    Youtube.com/garageaholic

    Comment


      #3
      sweeeeeet... email comin' at ya...
      85 325e m60b44 6 speed / 89 535i
      e30 restoration and V8 swap
      24 Hours of Lemons e30 build

      Comment


        #4
        ** props to RS4PRO3...
        Recent Rebranding!!
        Visit Garageaholic for all of your E30 Swap Needs!
        E30 SM62/S62
        E30 M60 V8
        E30 M30 Big 6!




        Check out this E36 N54 Swap Build
        Instagram.com/garageaholic
        Youtube.com/garageaholic

        Comment

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