1936/37 Evinrude Sportsman 2.5hp

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  • May 4, 2015 at 1:21 am #1401
    gjonz
    Participant

      What kind of modern spark plugs should I use?

      Thx!

      Greg

      May 4, 2015 at 2:00 am #15292
      legendre
      Participant

        NGK! =P

        May 4, 2015 at 2:24 am #15293
        gjonz
        Participant

          Since it is a nice fresh restoration…and I’m trying to stay original…how about Champions…like I always use.

          Anyone know what a good modern Champion plug would be that works in this.

          Thanks!

          May 4, 2015 at 2:43 am #15296
          Mumbles
          Participant

            The original plug was a J1-15 so you may have to do a Google search to find a modern equivalent.

            May 4, 2015 at 3:04 am #15299
            legendre
            Participant

              Hey Greg,

              quote gjonz:

              What kind of modern spark plugs should I use?

              Thx!

              Greg

              What, if anything, was in the hole when you got the motor?

              I’m sure someone who knows will eventually show-up with data, but if not, you’ll just have to pin down the basics (thread size / pitch / reach) and pick a plug in a middling heat range – like an NGK 6 or 7 or a Champion 6 and try it.

              On these old motors, just about anything (heat range-wise) should be OK for initial shake-down runs in a tank, etc.

              May 7, 2015 at 2:07 am #15461
              garry-in-michigan
              Participant

                Lifetime Member

                The more modern short Champion spark plugs begin there part number with "C". A following "C" indicates a copper core. which is advertised as having better heat tolerance and an extended heat range.

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