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FS: Refreshed 731 Head SOLD

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    FS: Refreshed 731 Head SOLD

    731 Head SOLD 02/16/11

    Alright so I need to sell my 731 head. I had a valve job done, assembled the motor and changed plans. I drove the setup around the neighborhood just for shits and giggles. Maybe 25 miles on rebuilt head.

    As we all know a used 731 head is like $270-$400 depending on condition. I spent more than that on just the machine work.

    Machine work/specs of head includes:

    5 angle 'performance' valve job
    12 new guides/bulleted intakes
    Intake seats enlarged +1mm to accept machined -1mm i intake valves
    Exhaust seats enlarged +2mm to accept factory i exhaust valve
    Head surface decked and pressure tested
    New valve stem seals

    Currently assembled with used e rockers/shafts/eccentrics i dual valve springs, retainers and i cam/i cam gear.

    The machinist was impressed by the porting that had been previously done on the head. Actually ported, not a dremel job on the intake inlets, but underneath the valves in the 'bowls.'

    I also have the whole motor if anyone is interested. They are currently one piece.

    Longblock from i valve cover down to the oil pan would include:

    New head gasket
    New lower crank pulley cover gasket
    New head bolts
    New timing belt
    New tensioner/spring/pin
    New Camshaft Seal
    New Crank seal & Int shaft seal
    Late model style i int shaft sprocket/pulley
    i harmonic balancer and
    New early style dual outlet water pump (if you were interested.)

    Located in South Pasadena, CA.

    Pictures are from build.


    Asking price

    Head $595

    Longblock $765

    Longblock with G265 $845















    Last edited by hotballs; 02-17-2011, 01:50 AM.

    #2
    Did you install the head bolts with no washers?
    BimmerHeads
    Classic BMW Specialists
    Santa Clarita, CA

    www.BimmerHeads.com

    Comment


      #3
      Don't think so...can't really tell from that pic, it's the only one I have, I'll have to see if I pull the valve cover off.

      Comment


        #4
        Good deal on this setup by the way. I bet it's quick!
        BimmerHeads
        Classic BMW Specialists
        Santa Clarita, CA

        www.BimmerHeads.com

        Comment


          #5
          Head is ready to be pulled if anyone wants to make offers on the head.

          Comment


            #6
            head

            Comment


              #7
              Head is a bit overmachined...

              Check Us out on Facebook
              Needing a harness adapter or wiring help? Check it out: also have 24v motor mounts, E30 M3 covers and E36 ECU mounts!
              Full Product Line Tuning
              OBD2 Tuning Available! OBD2 E36, S54 Swap, S62 Swap, etc: tuning@MarkertMotorWorks.com Dyno Thread

              Comment


                #8
                Really? How so?
                sigpic"God made cars to be RWD and standard"

                Comment


                  #9
                  Good:

                  Bad:


                  Good:


                  Bad:

                  Didnt mean to threadcrap

                  Check Us out on Facebook
                  Needing a harness adapter or wiring help? Check it out: also have 24v motor mounts, E30 M3 covers and E36 ECU mounts!
                  Full Product Line Tuning
                  OBD2 Tuning Available! OBD2 E36, S54 Swap, S62 Swap, etc: tuning@MarkertMotorWorks.com Dyno Thread

                  Comment


                    #10
                    So this head is ideal for use with a stock ETA block, crank, rods, and pistons? What would be the compression ratio with this setup? What were you using as far as management? 173 with chip?

                    Comment


                      #11
                      Originally posted by ÜberslowETA View Post
                      So this head is ideal for use with a stock ETA block, crank, rods, and pistons? What would be the compression ratio with this setup? What were you using as far as management? 173 with chip?
                      Yes correct. This head is a perfect fit for any m20b27 bottom end (84-87 eta). The flat top pistons mate with the combustion chambers to maintain 9.0:1 compression ratio. Best setup would be a 1.3 motronic harness (81-91 325i) with a 173 DME. You could use stock injectors or any larger injectors with a chip. I ran 19lbers with a MarkD chip.


                      BTW 328iJunkie is taking craps and referring to the deck height which is still within spec. There is no valve slapping or anything wrong with the deck height. Thanks for filling the thread with your pictures and wisdom. You can still see that little number in my first pic, the valve seats are still within tolerance, I forgot how classy R3V can be.

                      Comment


                        #12
                        PM'd

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