Reply To: Connecting rod bearings, 1956 Johnson 30 HP

[frankr]

Its kind of hard to track down the history on those due to the frequent, usually mid-year, changes.

You probably have heard about the wrist pin bearing problem with the 30hp. The needles would get out and destroy the piston as they passed through. An improved rod was introduced the next year with bigger bearings. The new rod with w/pin bearings was part number 377272. W/p bearings (only) for he original rad was 304322. Yes, they are pressed in, one from each side. Always press needle bearings from the lettered end.