Reply To: 1959 johnson wrist pin

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August 6, 2022 at 5:51 pm #264047
frankr
Participant

    Have you torn it down for inspection yet?  Those motors were bad about beating the wrist pins loose in the pistons.  The official fix requires new rods, pistons, wrist pins, wrist pin bearings, and snap rings.  The new parts are as used in 1961-63 10hps.