Welsh plug

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  • March 27, 2015 at 10:22 pm #1041
    dmbono
    Participant

      I have disassembled an early cast tank Johnson waterbug. I would like to clean out the cylinder water jackets. The welsh plugs are pennies. I will make new plugs- question is what material did Johnson use? Steel or brass come to mind

      March 28, 2015 at 12:01 am #12890
      Mumbles
      Participant

        I’m sure the early Johnson welch plugs were made of steel or iron as I’ve had several which were rusted through. I make replacements out of aluminum and epoxy them in place.

        March 28, 2015 at 1:21 pm #12917
        melugin
        Participant

          US Member

          Although not original, a very old penny will add authenticity. One of my motors has a 1916 penny replacing the Welch plug. . A small peen dent is where the mint mark could have been. A 1916 D penny would be worth more than the motor.

          March 29, 2015 at 6:30 pm #13010
          garry-in-michigan
          Participant

            Lifetime Member

            I have seen several Antique Johnsons with a penny from there year of manufacture in the welsh plug socket. I think they are really cool … 😀

            April 1, 2015 at 4:51 pm #13150
            dmbono
            Participant

              Thank you all for your replies. I popped the pennies- they were stuck good! I’m soaking the jackets with lime and rust juice before capping the plugs again.

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