1956 FD-10 Connecting Rods Interchange

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  • March 2, 2022 at 10:54 am #255507
    Mumbles
    Participant

      I can’t find the original post but a while back someone was going to swap their FD-10’s  rods out with some others which had the same part number on them but were physically different from the originals.  This old service bulletin from 1960 explains why.

      OMC-15-Horse-Rods_
      OMC-15-Horse-Rods__

      March 2, 2022 at 11:15 am #255511
      Bob Wight
      Participant

        US Member

        Interesting – thanks for sharing.

        Bob

        1937 Champion D2C Deluxe Lite Twin
        1954 Johnson CD-11
        1955 Johnson QD-16
        1957 Evinrude Fastwin 18
        1957 Evinrude 3022
        1958 Johnson QD-19
        1958 Johnson FD-12
        1959 Johnson QD-20
        1982 Evinrude 25hp

        “Every 20 minute job is only a broken bolt away from a 3-day project.”
        "Every time you remove a broken or seized bolt an angel gets his wings."

        March 3, 2022 at 8:48 am #255552
        labrador-guy
        Participant

          US MEMBER PAY BY CHECK

          Interesting, lots of engine builders  might disagree.   I know people that weigh every similar component and every moving part for consistency.   For a daily runner those fat rods will probably work just fine.   Mumbles what year did OMC start using a needle bearing in the piston pin on the FD motors?

          dale

          March 3, 2022 at 11:47 am #255556
          olcah
          Participant

            US Member

            Mumbles,

            I am the guy that noticed the differences.  Really appreciate you posting this!

            March 3, 2022 at 12:04 pm #255557
            olcah
            Participant

              US Member

              In 1957 when the 15 HP motors grew to 18 HP OMC put needle/roller bearings at the rod big and small ends and crankshaft bearings.

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