Home Forum Ask A Member Johnson TD & TN Powerhead Swaps, & Cranks

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    Buccaneer
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      US Member

      I’m just thing about “options” with my remaining TD and TN Johnson parts,
      and I pondered ……….
      Q. Will the crankshafts interchange?
      The TD is showing part # 41-301-392, and the
      TN shows part # 302445

      I tried plugging the numbers in at Marine Engine, and both
      came up “No such part found”. I tried dropping the “41” on the TD number,
      adding zeros, etc.

      Will a TN powerhead work on a TD lower unit?
      The powerheads look pretty similar, but the TN motors use the carbon seal
      on the crank bottom, the TD did not, the TD used a driveshaft tube, the TN
      did not. I have a TN parts motor with seemingly good compression, so
      the wheels were turning, thinking about possibilities.

      Prepare to be boarded!

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