Reply To: 1956 Johnson CD-13A

[Don]

Adam, the important thing is to figure out why the piston got stuck to begin with.   Sounds like more of an issue that just a light sticking due to sitting around.   Water leak into the cylinder?  Blown head gasket, sealing surfaces damaged?  Leaking exhaust cover?  Or, perhaps the lower seal was messed up allowing water into the powerhead.

You have the engine apart, is the crankshaft OK?  If so, it is surely worth finding a used piston/rod and reassembling, if you can find new rings.   You will need to check the cylinder as well.   Needless to say, finding a decent used powerhead would be the simplest solution