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m20 starter hook up on 318is

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    m20 starter hook up on 318is

    I have an m20 flywheel now on my 318is and I need to hook up the m20 starter. It looks like the wiring is completely different. Any ideas on how this is done?

    #2
    Im not sure... I just changed the pinion gears over. Its really not that hard.

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      #3
      alright, where the big wire goes should be pretty obvious, of the 2 smaller wires one is to start the car and one is for the jumper relay. one wire is just a wire with its own tight insulation on it. the other wire is smaller but has loose insulation around it. you should be able to tell by looking/feeling. The the plain wire goes to the other post of the starter. the wire with the extra insulation needs to be grounded. I used the post the engine wiring harness mounts on, its right there. i think i had to drill out the wires connector slightly.

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        #4
        Originally posted by gazellebeigem3 View Post
        Im not sure... I just changed the pinion gears over. Its really not that hard.
        Thats the way to do it .

        Just swap the m20 starter pinion into your M42 starter .

        Or you can take a torch to heat up and remove the ring gear from the flywheels and swap them over .

        E30 M3 / E30 325is / E34 525iT / E34 535i

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          #5
          I just bought a used m20 flywheel and starter and was wondering the steps to swap the pinion gears. Could you walk me through the process step by step?
          TIA!

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            #6
            the step is bolt m20 starter in place of m42 starter

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              #7
              Originally posted by redhead View Post
              I just bought a used m20 flywheel and starter and was wondering the steps to swap the pinion gears. Could you walk me through the process step by step?
              TIA!

              THIS should help a bit .

              E30 M3 / E30 325is / E34 525iT / E34 535i

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