Anyone see IE's new m20 rockers?

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  • JGood
    R3V OG
    • Jan 2004
    • 7959

    #1

    Anyone see IE's new m20 rockers?



    For $25/piece, it sounds promising! Anyone know anyhting about them?

    Look how much thicker they are, and they are shot peened. Beat's $85/piece for aluminum if it gets the job done...
    85 325e m60b44 6 speed / 89 535i
    e30 restoration and V8 swap
    24 Hours of Lemons e30 build
  • Kilomph
    E30 Addict
    • Oct 2004
    • 599

    #2
    Definitely seems like a good deal, Febi (OEM redesigned) rockers are going for $21/piece, and apparently they only ever break with really high lift cams. That's a $50 difference, really only worthwhile if you plan on running an extreme cam.

    Comment

    • JGood
      R3V OG
      • Jan 2004
      • 7959

      #3
      Originally posted by Kilomph
      Definitely seems like a good deal, Febi (OEM redesigned) rockers are going for $21/piece, and apparently they only ever break with really high lift cams.
      Oh, I didn't know there was a redesign. How do they compare to stock, and these?
      85 325e m60b44 6 speed / 89 535i
      e30 restoration and V8 swap
      24 Hours of Lemons e30 build

      Comment

      • Kilomph
        E30 Addict
        • Oct 2004
        • 599

        #4
        Originally posted by Stück
        FEBI

        My built m20 with a high duration/lift cam and a 7100rpm limiter did just fine with the revised FEBI rocker arms. There is no one on this board that needs anything more then those in a street car/engine.

        Furthermore said FEBI rocker arms are $18 each or so. Billet rockers are upwards of $80.

        Most e30 owners can barely swing $216 for 12 new OEM rocker arms, let alone upwards of $960 for billet ones.

        The arms are widened, and the crotch is shorter.

        What idiot told you that?
        Bimmerforums is the preferred online BMW Forum and community for BMW owners. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm ideas for the future.


        Took that from bf.c a while ago, so I guess prices have gone up, but I only checked BMA really quickly. They were re-designed in the early 90s I think, and from what I've read there hasn't been a recorded case of one breaking with stock cams and a sane red-line, even after hundreds of thousands of miles.

        Comment

        • JGood
          R3V OG
          • Jan 2004
          • 7959

          #5
          wow. interesting.

          Thanks for the info!
          85 325e m60b44 6 speed / 89 535i
          e30 restoration and V8 swap
          24 Hours of Lemons e30 build

          Comment

          • moatilliatta
            R3V OG
            • Feb 2005
            • 6121

            #6
            aluminum rocker arms = m50 swap..

            I was up above it, Now I'm down in it ~ Entropy - A Build thread.
            @Zakspeed_US

            Comment

            • Kilomph
              E30 Addict
              • Oct 2004
              • 599

              #7
              m50 = heavier + far more money + unknown maintenance history.

              Comment

              • gazellebeigem3
                No R3VLimiter
                • Jun 2005
                • 3712

                #8
                Originally posted by Kilomph
                m50 = heavier + far more money + unknown maintenance history.
                lawl

                Comment

                • Kilomph
                  E30 Addict
                  • Oct 2004
                  • 599

                  #9
                  Originally posted by gazellebeigem3
                  lawl
                  + hardly any faster, if at all compared to the money you'd be spending on the swap could be used for new rockers + chip/cam + lightweight flywheel + exhaust.

                  lawl.

                  Comment

                  • turboeta
                    E30 Addict
                    • Aug 2007
                    • 571

                    #10
                    No matter how you look at it the M50 is far superior to the M20, although I'm selling my M50 and sticking with the M20...I <3 my 12 valves

                    635csi Euro/Alpina B7S

                    Comment

                    • Kilomph
                      E30 Addict
                      • Oct 2004
                      • 599

                      #11
                      Originally posted by turboeta
                      No matter how you look at it the M50 is far superior to the M20, although I'm selling my M50 and sticking with the M20...I <3 my 12 valves
                      Far superior if you're willing to shell out a good 4-6k, which would refresh an M20 and build a solid turbo kit. But yes, it's definitely the better engine.

                      Comment

                      • nando
                        Moderator
                        • Nov 2003
                        • 34827

                        #12
                        febi rockers here, 7200rpm and no troubles.

                        M50 = *yawn*
                        S50 = :D:D:D
                        Build thread

                        Bimmerlabs

                        Comment

                        • JGood
                          R3V OG
                          • Jan 2004
                          • 7959

                          #13
                          Originally posted by moatilliatta
                          aluminum rocker arms = m50 swap..

                          This thread isn't about Al rocker arms. I agree, they are way to expensive.

                          Originally posted by Kilomph
                          m50 = heavier + far more money + unknown maintenance history.

                          + hardly any faster, if at all compared to the money you'd be spending on the swap could be used for new rockers + chip/cam + lightweight flywheel + exhaust.

                          lawl.

                          Only by 50ish lbs, and you can find the maintenance history the same way you'd find it for an m20 engine.

                          I spent under $300 on my m50 swap, and it runs absolutely perfect, and pulls much harder then my m20 powered track car that is 300+lbs lighter. If people are spending $4k+ on an m50 swap, they are doing something seriously wrong, or doing a full rebuild top to bottom with parts form the stealer.



                          Originally posted by turboeta
                          No matter how you look at it the M50 is far superior to the M20, although I'm selling my M50 and sticking with the M20...I <3 my 12 valves
                          I do love me the sound of an m20 :)
                          85 325e m60b44 6 speed / 89 535i
                          e30 restoration and V8 swap
                          24 Hours of Lemons e30 build

                          Comment

                          • gazellebeigem3
                            No R3VLimiter
                            • Jun 2005
                            • 3712

                            #14
                            Originally posted by Kilomph
                            + hardly any faster, if at all compared to the money you'd be spending on the swap could be used for new rockers + chip/cam + lightweight flywheel + exhaust.

                            lawl.
                            No timing belt, much newer in general and better in every single way, but whatev floats your boat.

                            besides, if you wanted to do it on the cheap, i bet you could swap an m50 into a 325 for under a grand.

                            Sorry to the op, not trying to jack.

                            Comment

                            • Jean
                              Moderator
                              • Aug 2006
                              • 18228

                              #15
                              Lol 4-5k for M50 swaps? Maybe 5 years ago.
                              Mtech1 v8 build thread - https://www.r3vlimited.com/board/sho...d.php?t=413205



                              OEM v8 manual chip or dme - https://www.r3vlimited.com/board/sho....php?p=4938827

                              Comment

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