check out my cyl head

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  • JasonC
    Site Manager
    • Aug 2006
    • 14451

    #16
    The 731 head is the head on 323i e30's.

    1992 BMW 325iC
    1978 Chevrolet Monte Carlo
    1965 Chevrolet Corvair Monza 140hp

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    • der affe
      Moderator
      Technical
      • Dec 2005
      • 8452

      #17
      hmmmm i think i will email metric mechanic or call them to see if they have any ideas on it.

      btw, what is the stock "i " intake and exhaust valve sizes?
      i am somehow going to get ahold of the Po to see what exactly is up with my motor as far as what has been done or put in it.....for sure!

      thanks BTW jason!
      seien Sie größer, als Sie erscheinen


      Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

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      • pitbull09
        Advanced Member
        • May 2009
        • 101

        #18
        Mabey it was rebuilt by John Deer? Nothing runs like a deer after all right? Mabey the last owner was confused lol! Sorry just being stupid but otherwise I've go no info

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        • pitbull09
          Advanced Member
          • May 2009
          • 101

          #19
          However I do know people put the 323i euro head on the I engine to increase compresion

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          • nando
            Moderator
            • Nov 2003
            • 34827

            #20
            Originally posted by pitbull09
            However I do know people put the 323i euro head on the I engine to increase compresion
            not unless you like piston and head colisions

            you're thinking of the 323i head and eta block
            Build thread

            Bimmerlabs

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            • pitbull09
              Advanced Member
              • May 2009
              • 101

              #21
              +1 your right my mistake sorry

              Originally posted by nando
              not unless you like piston and head colisions

              you're thinking of the 323i head and eta block

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              • der affe
                Moderator
                Technical
                • Dec 2005
                • 8452

                #22
                i talked to metric mechanic and i guess these were converted 323 heads with "i" intake and exhaust valves. that explains the wierd machining behind the intake valve seats into the port without the rest of the port being blended.

                i am going to look for another head to do up, have welded, and replace it.

                then maybe clean up and blend the ports of the other one and sell it.

                how big of a deal is it to weld the head when you are boosting it?
                seien Sie größer, als Sie erscheinen


                Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

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                • Farbin Kaiber
                  Lil' Puppet
                  • Jul 2007
                  • 29502

                  #23
                  Not much work, but worth the effort.

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                  • der affe
                    Moderator
                    Technical
                    • Dec 2005
                    • 8452

                    #24
                    yea, but i would rather start with an i head and go from there with it, because it already has bigger ports and i have no idea how thick the runner walls are on this mystery head or what is left after machining the area behind the valve seat to match the port.

                    after i clean this one up i would make a great ETA head for a 2.7 stroker. just not what i want to start with if i am going to go through the effort.
                    seien Sie größer, als Sie erscheinen


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