M62b44 relocating crankshaft position sensor HELP!

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  • Jony
    Advanced Member
    • Mar 2014
    • 153
    #1

    M62b44 relocating crankshaft position sensor HELP!

    Hi guys! I have couple questions. Someone knows me, but who don't i introduce myself... i have e30 with m62b44tu from e38 2001 740Li. I run this engine on stock dme and my question is: should i relocate the cps from transmission bellhousing to front crankshaft pulley? Yes i know i must use m60 crankshaft pulley/damper/trigger and weld mount for cps (its not a problem) but will it works with donor dme? Or i need to replace dme for 404 one?

    Thanks a lot for your answers :) have a nice day
    Tags: None
    • Gertech
      Advanced Member
      • Jul 2013
      • 180
      #2
      I don't think you're going to be able to run that engine with a 404 DME because of the vanos. Seems you'd want to run the original wiring harness with the sensor in the bell housing, along with the original DME. Someone please correct me if that's not the case.

        Comment

        • jpod999
          E30 Fanatic
          • Dec 2015
          • 1401
          #3
          If you are running the stock DME and harness why would you want to move the crank position sensor to the front of the engine? It should already be setup for the bellhousing.

          You will not be able to get the 404 DME to fire the tu engine as far as I know.

          OBDI M62B44/6 swap
          Transaction feedback
          - jpod999

            Comment

            • Jony
              Advanced Member
              • Mar 2014
              • 153
              #4
              Originally posted by jpod999
              If you are running the stock DME and harness why would you want to move the crank position sensor to the front of the engine? It should already be setup for the bellhousing.

              You will not be able to get the 404 DME to fire the tu engine as far as I know.
              Because i have still issues with start engine... i only want to know if it will works when i relocate cps to crank pulley

                Comment

                • Tjabo
                  Member
                  • Feb 2015
                  • 57
                  #5
                  From what I've been able to determine they are both 60-2 trigger wheels. I would think that as long as the lacking tooth arrives at the correct time, you should be good to go with the DME from the TU engine. Anyone know that to be incorrect?

                  Now, if I'm correct about that, the next trick would be to ensure that the missing tooth on the small front pulley wheel is timed correctly to what the flywheel missing teeth would be. I may be able to get you a measurement for that on my non-TU m62b44, but it won't be for weeks probably. Hopefully someone can help you sooner than I can.

                    Comment

                    • JGood
                      R3V OG
                      • Jan 2004
                      • 7959
                      #6
                      I'd be very surprised if it worked correctly without throwing codes, if at all, with the OBD-II DME using a front mounted CPS . The reason BMW moved it to the flywheel is because of OBD-II regulations, individual cylinder misfires had to be accurately monitored, and the front trigger wheel doesn't provide precise enough measurement due to the rubber in the damper.
                      85 325e m60b44 6 speed / 89 535i
                      e30 restoration and V8 swap
                      24 Hours of Lemons e30 build

                        Comment

                        • Tjabo
                          Member
                          • Feb 2015
                          • 57
                          #7
                          Ah! Good info there JGood.

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