If rings are all you need, you’re way ahead of the game!
That ’37 Sea King of mine seems like a motor from hell as it needed lots of work and still does. The mixture needle was rusted off so I had to guestimate what it should look like. After making a knurled one, I found out I got it wrong. Apparently the original is a just a bent piece of 1/4" rod material. The waterpump cam was totally worn out and so was the driveshaft so I made a new shaft and cam and sleeved the pump housing and used a pump plunger from a donor Johnson motor. New bushings were made for the gearcase and the powerhead and oil seals were adapted to the propshaft and upper crankshaft. The crankshaft seems soft and bends easily and it was a bear to keep it spinning freely while tightening up the crankcase halves. I ended up cutting gaskets for the cases and using The Right Stuff by Permatex to try and keep the alignment good and the cases sealed. After all that I found out my tank is rusted thru all over the place. On the bright side, it has rings and I think the coil is good!
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