1984 70hp Mercury
SN 6230127
Question. I burned out a piston and am in the process of replacing it. Earlier today I pulled out the crankshaft to expose the bad piston and cylinder. The Piston and rings were shot, but I think the cylinder will make it. There is no "scratch" in the cylinder wall, however, there is a slight, smooth groove on the wall. It doesnt catch my finger nail but i can feel the imperfection. About 90% of this groove on the wall behind where the piston would rub against it. Does this call for a re-bore and an over-sized piston? I can post pics if it helps!
SN 6230127
Question. I burned out a piston and am in the process of replacing it. Earlier today I pulled out the crankshaft to expose the bad piston and cylinder. The Piston and rings were shot, but I think the cylinder will make it. There is no "scratch" in the cylinder wall, however, there is a slight, smooth groove on the wall. It doesnt catch my finger nail but i can feel the imperfection. About 90% of this groove on the wall behind where the piston would rub against it. Does this call for a re-bore and an over-sized piston? I can post pics if it helps!