1985 Merc 35 piston question

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  • April 26, 2015 at 4:59 pm #1331
    chinewalker
    Participant

      US Member

      Just took this one in. It’s a 1985 35hp 2 cylinder. Basically half of the 4-cylinder 75 of the same era. With one difference – the 75 had the Power Port pistons with the approximately 1-inch hole in the skirt. The 35 did not have the hole. All else appears the same on the pistons. Is there any reason I can’t use the holed skirt pistons in place of the original solid skirt pistons in the 35? I have several of the holed ones on hand.

      April 26, 2015 at 6:28 pm #14798
      garry-in-michigan
      Participant

        Lifetime Member

        I don’t think it will make any difference, all else being equal. If the cylinder wall had a matching hole (like the 75) It might give you a little more power. But then, what do I know – I’m an Evinrude man … 😀

        April 27, 2015 at 2:25 pm #14854
        chinewalker
        Participant

          US Member

          Here are some pics:
          The power ported piston on the left with the standard direct charge piston on the right.

          The motor in question before I dug into it…

          May 2, 2015 at 7:36 pm #15219
          chinewalker
          Participant

            US Member

            The power ported Pistons worked great! Got the motor running this morning!

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