1973 20' SF - Engine Trouble?

[StrangeBrew]

I agree. I will do all of the piston rings while I'm at it.

[eggsuckindog]

I actually meant putting all new pistons and rings-you need to check that out - the labor pulling it down is the kicker. Then you would have a fully rebuilt engine, you would have to decide to keep it for awhile to make it work $ wise.

[Fr. Frank]

I actually meant putting all new pistons and rings...

Inspect the pistons carefully with micrometers. If they're in good shape, don't spend the extra $135 per piston to replace all of them. Just replace the damaged pistons or worn ones. Hone and re-ring the others. You'll undoubtedly have to replace the one, though. Don't be afraid to go one size over-sized on one cylinder if necessary.