raising revs?????

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  • Gordon1987
    Member
    • Feb 2011
    • 76

    #1

    raising revs?????

    How can i raise my rev limit from 5000 to 7000..... i have an E computer 027
  • davem
    Mod Crazy
    • Jun 2010
    • 705

    #2
    u can't

    Comment

    • MTechnikII
      Member
      • Jun 2007
      • 83

      #3
      you might / will bend a/couple of valve, for higher rev you need stiffer valve springs plus electronics that can control the fuel and ignition at that RPM
      Henry

      Comment

      • Myster-E
        Performance
        • May 2009
        • 552

        #4
        Originally posted by MTechnikII
        you might / will bend a/couple of valve, for higher rev you need stiffer valve springs plus electronics that can control the fuel and ignition at that RPM
        Henry
        You mean valve float?
        1988 E30 335i - 1987 E30 327i - 1987 E30 327iS Pickup - 1973 2002 Project

        Visit www.BimmerHeads.com for all of your 12 valve needs!

        Comment

        • blocke
          E30 Fanatic
          • Mar 2009
          • 1305

          #5
          Buy an "I"
          sigpic
          Parts Wanted
          The Never-ending Resto Mod

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          • lolcantturn
            R3V Elite
            • Oct 2010
            • 4588

            #6
            Buy "How to search for Dummies"
            Originally posted by TSI
            ♫ Rust flecks are falling on my head...♫
            OEM+

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            • blindwOw
              Advanced Member
              • Nov 2010
              • 124

              #7
              do this

              '87 Zinno 325e

              Comment

              • matt0300
                E30 Addict
                • Mar 2011
                • 549

                #8
                megasquirt

                Comment

                • MR 325
                  Moderator
                  • Oct 2003
                  • 37825

                  #9
                  Originally posted by MTechnikII
                  you might / will bend a/couple of valve, for higher rev you need stiffer valve springs plus electronics that can control the fuel and ignition at that RPM
                  Henry
                  The Eta cylinder head physically CAN NOT rev that high. Nothing will bend or break, it just won't do it.
                  Originally posted by matt0300
                  megasquirt
                  Not even Megasquirt can make an Eta engine rev that high. Super awesome suggestion though.
                  BimmerHeads
                  Classic BMW Specialists
                  Santa Clarita, CA

                  www.BimmerHeads.com

                  Comment

                  • Gordon1987
                    Member
                    • Feb 2011
                    • 76

                    #10
                    its an I head i just have the e computer. im trying to avoid the I computer

                    Comment

                    • Gruelius
                      Wrencher
                      • Oct 2009
                      • 298

                      #11
                      put in a 4cyl cluster.
                      RIP 84 323i coupe 5spd w/ 14psi
                      89' 318i

                      Comment

                      • MR 325
                        Moderator
                        • Oct 2003
                        • 37825

                        #12
                        Originally posted by Gordon1987
                        its an I head i just have the e computer. im trying to avoid the I computer
                        The ONLY way to make it do what you want is to swap an i harness and computer. You'll also want the i throttle body, intake manifold, and injectors if you don't have them. Along with the i AFM and crank sensor.

                        Not sure why you're "trying to avoid the i computer. Swapping the harness and all other parts I mentioned above can be done in one day easily.
                        BimmerHeads
                        Classic BMW Specialists
                        Santa Clarita, CA

                        www.BimmerHeads.com

                        Comment

                        • matt0300
                          E30 Addict
                          • Mar 2011
                          • 549

                          #13
                          How different are the harnesses?

                          Comment

                          • MR 325
                            Moderator
                            • Oct 2003
                            • 37825

                            #14
                            Completely.
                            BimmerHeads
                            Classic BMW Specialists
                            Santa Clarita, CA

                            www.BimmerHeads.com

                            Comment

                            • acolella76
                              R3VLimited
                              • Apr 2010
                              • 2950

                              #15
                              very different, very easy swap though. It took me about 20 minutes and 10 of that was drilling out that damn hole in the firewall
                              -Alex

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