Does anyone know where to find oversized pistons and rings for a 1966 johnson 20 hp? The farthest back boats.net goes is 1968. I'd prefer .020 over stuff too.
are you sure you need an overbore and new pistons??
piston part number is 385338 for standard, 383477 for .020 over and 383478 marine engine has the standards and the .040 overs but the .020 overs are nla
go to the ask a member section of aomci.org and see if one of those guys can help you find em
