M54B30 rod questions

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  • Bimmer_man
    E30 Fanatic
    • Jan 2013
    • 1477

    #1

    M54B30 rod questions

    I figured this may be the best place to ask a few questions on the M54B30 rods. Just the rods. Im getting custom pistons. So i have herd conflicting information i would like to have cleared up.

    Are M54B30 rods forged or cast?

    And how much power can the rods themselves handle? Im looking for a max number it the number is too low then ill spend the extra 1k for better rods.

    Please let me know guys.
    Float like a cadillac sting like a Bimmer!:)

    sigpic
  • DesertBMW
    E30 Enthusiast
    • Aug 2011
    • 1011

    #2
    M54B30 rods are the same as S52b32 rods. Same part number. These rods can handle 1000hp no problem. Rods rarely fail from too much power, they fail do to overreving and detonation

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    • Bimmer_man
      E30 Fanatic
      • Jan 2013
      • 1477

      #3
      thanks man i appreciate the quick response. I was hoping for that. im not going to try for 1000HP but thats good to know.
      Float like a cadillac sting like a Bimmer!:)

      sigpic

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      • digger
        R3V Elite
        • Nov 2005
        • 5908

        #4
        as said rods don't fail because of hp, its rpm or cylinder pressure. what engine specs?
        89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

        new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

        Comment

        • Bimmer_man
          E30 Fanatic
          • Jan 2013
          • 1477

          #5
          sending you a PM digger.
          Float like a cadillac sting like a Bimmer!:)

          sigpic

          Comment

          • digger
            R3V Elite
            • Nov 2005
            • 5908

            #6
            you'll want better rods than stock, will probably make bags of torque
            89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

            new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

            Comment

            • Bimmer_man
              E30 Fanatic
              • Jan 2013
              • 1477

              #7
              dern, okay if that was the case I was looking at Arrow precision. what are your thoughts?
              Float like a cadillac sting like a Bimmer!:)

              sigpic

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              • digger
                R3V Elite
                • Nov 2005
                • 5908

                #8
                arrow are a good brand
                89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

                new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

                Comment

                • 328ijunkie
                  Forum Sponsor
                  • May 2007
                  • 3961

                  #9
                  Depending on your power goals, stock rods are fine.

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                  • nando
                    Moderator
                    • Nov 2003
                    • 34827

                    #10
                    all rods are forged.
                    Build thread

                    Bimmerlabs

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