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323: B6 to BP Swap Questions

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    #1

    323: B6 to BP Swap Questions

    I came across a deal I couldn't pass up for a donor car - a 1995 Escort GT.

    The only problem, it's automatic and I'm stick. I know if you want to hardwire your B6 harness for the BP motor, it's a matter of;

    "You will need to get the two-wire connector from the VICS solenoid and route those two wires all the way to the two pinouts on the BP ECU you are using. You will also need to get a 4-wire distributor connector, and splice the three wires from your old harness, and route the forth wire to your new BP ECU pinout."

    My problem lies in that my 323 will have the two-plug ECU while the Escort will have the three-plug automatic ECU.

    So, that eliminates a simple ECU swap and retaining my factory engine harness.


    What are my options Protege gods?

    Is it possible (fairly straightforward? I've swapped engines in my MR2 and I'm currently installing my pre-built Megasquirt box and universal harness, so I'm capable of some minor tom foolery) to put that automatic BP ENGINE harness into my 5speed B6 car, and simply ground out/trick the neutral safety switch?

    Worst case scenario, is I might need to pick up a 5-speed BP engine harness and ECU. Someone had mentioned that the 5-speed and automatic cars had different VAFs - what kind of worm can am I opening here?
    I peered out from the castle window and looked over the splendor of ROTM county. Yes, twas' a much simpler time back then. Peasants would go about their postings, and I, the mod, would rule over them with an iron fist.
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    #2
    I'd say if you could get it all the manual trans bolted to the auto engine using the auto harness and ecu then running your own wire for reverse lights. That would work but you might have an issue with the trans neutral switch and the whole clutch/park neutral switch.

    Best bet might be to simply get the correct harness and ecu and try a partial trade on your auto stuff at the wreckers then it might only run you $10 or so. When you splice up wires in the engine bey be real careful how you package them afterwards corrosion on wires leads to blown engines.

    Comment

      #3
      Originally posted by inferno94 View Post
      I'd say if you could get it all the manual trans bolted to the auto engine using the auto harness and ecu then running your own wire for reverse lights. That would work but you might have an issue with the trans neutral switch and the whole clutch/park neutral switch.

      I work at PartSource (have for 4 years, all the way through College), so I have a basic understanding what would be required.

      Currently, I have:
      - 1991 Mazda 323 w/ 5 speed. Running but rough.
      - 1995 Ford Escort GT w/ Automatic. Running beautiful on rotted body.

      My 323 has no options (manual windows, no sun roof, manual steering), so the Escort GT accessories will be heavily trimmed. I'm thinking that I can just permanently ground the safety switch so that the car will be able to be started at anytime.

      Then, if I'm feeling particularly spicy, I could add in a simply switch that would make the theft of my vehicle a little more difficult without a tow truck (and if you have one, well, damn son, you're good).


      I just want to make sure that the automatic engine harness can be easily separated from the body harness. I'm more than willing to fish the ECU wiring through the firewall of the Escort and into my 323.
      I peered out from the castle window and looked over the splendor of ROTM county. Yes, twas' a much simpler time back then. Peasants would go about their postings, and I, the mod, would rule over them with an iron fist.

      Comment

        #4
        I did some searching. However, it seems more people are going from an automatic 323 to a manual Escort GT/donor car.

        From what I gather, most people just transfer over the manual engine harness and ECU or just jump the NSS (Neutral Safety Switch) that's wired to the shifter mechanism.

        So, I'll simply swap over the AUTO engine harness and ECU and wire up the shifter mechanism.

        I stand the benefit of having a running donor car, so I can simply test out my "jumped theory/test" before removing the engine from the car. Then, I'll carefully remove my B6 5-speed harness and lay the BP automatic harness in it's place.

        I'm heading out today to put a good 5-6 hours into the car today, so I'll probably come back with more questions or a couple smug answers.
        I peered out from the castle window and looked over the splendor of ROTM county. Yes, twas' a much simpler time back then. Peasants would go about their postings, and I, the mod, would rule over them with an iron fist.

        Comment

          #5
          there are some plug differences from the Escort harness and the 323 harness on the interior end of the harness. plus you need the Mazda temp urature sending unit for your temp guage to work properly


          IMO find a 5speed BP harness or make a BP harness out of your B6 one.
          "Discontent is the first necessity of progress."
          -Thomas A. Edison

          "There is a fine line between ballin' on a budget, and dreamin' on an empty wallet."


          *Junked* 92 mx3, BP swap- milage whore, beaten up and down the east coast
          *Junked* KLZE powered 323 on Megasquirt 1
          172.60HP & 156.93 TQ with only headers and short ram intake. back under the knife for a BPT swap.
          New Daily stock 1.6L 1999 Mazda Protege LX

          Comment

            #6
            also the fuel injection rail is different source that if possible to it saves headaches
            "Discontent is the first necessity of progress."
            -Thomas A. Edison

            "There is a fine line between ballin' on a budget, and dreamin' on an empty wallet."


            *Junked* 92 mx3, BP swap- milage whore, beaten up and down the east coast
            *Junked* KLZE powered 323 on Megasquirt 1
            172.60HP & 156.93 TQ with only headers and short ram intake. back under the knife for a BPT swap.
            New Daily stock 1.6L 1999 Mazda Protege LX

            Comment

              #7
              Originally posted by MD323 View Post
              or make a BP harness out of your B6 one.
              What about the ECU? The Escort one won't wire up to the B6 harness since the plugs will be different (two plugs vs. three)?

              I didn't think the B6 ECU ran the BP? Or will you inferring that I'd be buying a different BP ECU?
              I peered out from the castle window and looked over the splendor of ROTM county. Yes, twas' a much simpler time back then. Peasants would go about their postings, and I, the mod, would rule over them with an iron fist.

              Comment

                #8
                Originally posted by Sockington View Post
                What about the ECU? The Escort one won't wire up to the B6 harness since the plugs will be different (two plugs vs. three)?

                I didn't think the B6 ECU ran the BP? Or will you inferring that I'd be buying a different BP ECU?
                if i recall correctly the harness will plug into the auto ECU the 3rd plug is transmission only. but sourcing a 5 speed ecu is relatively cheap considering the headaches it could save.

                *shameless plug* there is a BP powered protege LX in the yeard i saw today, I could easily pull the ECU,harness,fuel rail bits as well as the shift linkage you need.
                "Discontent is the first necessity of progress."
                -Thomas A. Edison

                "There is a fine line between ballin' on a budget, and dreamin' on an empty wallet."


                *Junked* 92 mx3, BP swap- milage whore, beaten up and down the east coast
                *Junked* KLZE powered 323 on Megasquirt 1
                172.60HP & 156.93 TQ with only headers and short ram intake. back under the knife for a BPT swap.
                New Daily stock 1.6L 1999 Mazda Protege LX

                Comment

                  #9
                  Originally posted by MD323 View Post
                  *shameless plug* there is a BP powered protege LX in the yeard i saw today, I could easily pull the ECU,harness,fuel rail bits as well as the shift linkage you need.
                  Shift linkage? I'll be running the F-series manual trans in my Mazda 323.

                  But I might have to hit you up if my tom foolery doesn't work out today. Are the VAFs also different between auto and manual cars (if you getting the harness, I might need the VAF as well)?
                  I peered out from the castle window and looked over the splendor of ROTM county. Yes, twas' a much simpler time back then. Peasants would go about their postings, and I, the mod, would rule over them with an iron fist.

                  Comment

                    #10
                    Originally posted by Sockington View Post
                    Shift linkage? I'll be running the F-series manual trans in my Mazda 323.

                    But I might have to hit you up if my tom foolery doesn't work out today. Are the VAFs also different between auto and manual cars (if you getting the harness, I might need the VAF as well)?
                    no VAF difference, i have an auto motor an auto VAF and a G series setup in my 323. I had previous run the 323 trans till i blew up one... or two... ok it was 3 sue me :p


                    yeah you only need the linkage if your using the G box, my bad
                    "Discontent is the first necessity of progress."
                    -Thomas A. Edison

                    "There is a fine line between ballin' on a budget, and dreamin' on an empty wallet."


                    *Junked* 92 mx3, BP swap- milage whore, beaten up and down the east coast
                    *Junked* KLZE powered 323 on Megasquirt 1
                    172.60HP & 156.93 TQ with only headers and short ram intake. back under the knife for a BPT swap.
                    New Daily stock 1.6L 1999 Mazda Protege LX

                    Comment

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