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'88 325is M30 street car-->S54 -->S50 -->M54 Enduro Race car

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    '88 325is M30 street car-->S54 -->S50 -->M54 Enduro Race car

    After sealing the deal on an engine this weekend, I figured it was time to make a thread documenting my s54 swap. There is some info out there on the swap, but obviously not as much as some of the other 24V e30 swaps, so I'll update this thread with a lot of detail as I go along. I am by no means an expert on this swap, there is a lot of it that I'm not sure how I'm going to tackle and I'm sure plenty of hurdles that I haven't even considered yet, but we'll see how it goes.

    I decided to pull the m30 out of the car because I'm wanting to get into some DE's and SCCA/NASA TT stuff this year. I've autocross the car a lot with the m20 and m30, but I decided I wanted something that would make more power up top.

    Car before:



    Where I am now. Engine bay is stripped. I removed most of the bracketry and am working on getting rid of cosmoline. Probably just going to re-spray it Alpine, not planning on shaving or wire tucking, just going to keep it clean. Just messing with the gold foil stuff, we use it on a lot of race cars at work and I think it looks cool, but it may look out of place in here:







    Last night I replaced the e30 fuel pump with an e46 m3 pump. The m3 runs at 5.0bar, compared to the e30's 2.5 or 3.0 (can't remember), so you need to use the pump from the e46. You have to trim the bottom bracket on the fuel pump to run the e46 fuel sock, which is a tight fit in the tank but it all went back together fairly easily.

    e46 on left


    e46 installed


    I was going to run the e46 m3 fuel filter, because it has a threaded outlet that holds the stock m3 fuel pressure regulator. However, I didn't realize the fuel filter was a foot long, and there isn't really a great place to put it under the e30. Now I'm thinking I'm going to just get a new e30 fuel filter and run a barb adapter fitting to adapt the e30 fuel hose to the stock e46 regulator.



    Next project is the brakes, I have a Massive Booster delete and I need to find a 20.6MM, non-ABS master cylinder, so if anyone can tell me what model e30 that comes on that would be great! I'm thinking early 325e?

    Also, I figured I would add a parts list, what I have now at least:
    '02 Z3M Engine Harness
    ZF310 trans from e36 m3
    e34 m5 clutch kit
    e36 m3 dual mass flywheel
    trans crossmember from e36 m3
    e36 m3 engine mount arms (planning on AKG 24V swap mounts)
    e36 328i driveshaft
    Massive booster delete
    e34 m50 oil pan/dipstick/new m50 oil pump
    VAC oil pan baffle for e30 swap
    VAC oil filter housing adapter (for oil cooler)
    s54 Z3M radiator
    M50 radiator hoses
    Z3M coolant pipe
    e30 m3 coolant resevoir
    Last edited by Jb325is; 06-12-2017, 07:09 PM.
    - '88 m54 coupe

    <3

    #2
    Hnnnnnggggggg!

    Sub'd

    1991 325iS turbo

    Comment


      #3
      You can run the fuel filter parallel to the rear subframe and the tank. You'll just need new hose and drop the hose from the pump directly to the filter. Tight squeeze but it'll allow it al to fit.

      Comment


        #4
        Cool, I'll check that out.
        - '88 m54 coupe

        <3

        Comment


          #5
          Also planning on running staggered turbines, with 18mm adapters on the street. Gonna have to run some stretch to fit them but I've always wanted to run my car really low on a set of Turbines so that's going to happen for sure

          And I'm planning on running Lee's 332x32mm brake kit in the front, so 17's from here on out

          - '88 m54 coupe

          <3

          Comment


            #6
            So hot!

            Comment


              #7
              Sweet! I can't wait to see the end result.
              sigpic

              Comment


                #8
                Very nice car. I love me a s54 swap
                sigpic
                "The bitterness of poor quality remains long after the sweetness of low price is forgotten."

                Comment


                  #9
                  This looks like it's gonna be pretty awesome, definitely going to keep an eye on this one.
                  88 325is - S52 powered

                  Originally posted by King Arthur
                  We'll not risk another frontal assault, that rabbit's dynamite!

                  Comment


                    #10
                    Been waiting for this thread to show up....


                    Something to consider with the e30 filter option is what the pressure handling capability of the e30 fuel filter is since it came from a system running much lower pressure.



                    Also, that pic of your car wearing the hoosiers is one of my favs.
                    Lorin


                    Originally posted by slammin.e28
                    The M30 is God's engine.

                    Comment


                      #11
                      In for this. Love your car already, so simple and clean.
                      91 318is M50 swapped
                      05 Honda Pilot

                      24V swap thread
                      http://www.r3vlimited.com/board/showthread.php?t=302524

                      Comment


                        #12
                        serbskribed, this looks interesting

                        Comment


                          #13
                          Awwwwww yiss

                          Comment


                            #14
                            im in!

                            Turbo M42 Build Thread :Here
                            Ig:ryno_pzk
                            I like the tuna here.
                            Originally posted by lambo
                            Buttchug. The official poster child of r3v.

                            Comment


                              #15
                              nice!

                              personally I'd mount the FPR/filter up by the front frame rail like it is on the E46, and use as many of the E46 fuel line bits as possible. you could get the entire mount bracket if you wanted, but that's probably a bit overkill.

                              I've got the same FP swap about 85% done. just haven't trimmed the pump carrier for the sock to fit yet. also, I ran a bit of hose instead of that weird rubber thing, because it looked like it would leak. I wouldn't use zip ties to hold it on either, personally - I'd prefer some steel hose clamps. something that won't disintegrate when bathed in fuel..
                              Build thread

                              Bimmerlabs

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