Reply To: 1959 Evinrude Lark 35 hp tear down

[Don]

OK, well it looks like the piston coked up, causing the stuck rings, leading to the melt down… The rings look properly aligned, so I don’t thing the alignment pin for the top set of rings came out…
Perhaps they were using crappy oil…
Hone the cylinder, then remeasure…It won’t be perfect, but will work just fine I’m sure…Don’t “over hone” it to get rid of all the little score marks, use a ball hone to finish up, it will get rid of any little problems and chamfer the ports.
Again, it depends on how perfect you want it…