Grumpy Bear
Seaman
- Joined
- Aug 23, 2014
- Messages
- 58
1974 Merc 50hp 500. See pic. First time the case has been opened in 41 years. Actually didn't realize that a scratch in my cylinder #4 was this significant until I started honing (as odd as that is -- 220# hone, about to finish with 320#). Replaced the piston and rings for this cylinder already before reinstall. Funny thing is, #4 had great compression before disassemble! Anyway, there is a scratch that my fingernail will definitely catch upon but not horribly so (it's the middle scratch that goes down to the port and no further -- the ones to the left and right of it are either barely detectible or not detectible at all with a fingernail or any other pointed utensil). I've invested a couple hundred dollars in this rebuild and don't really want to invest more in a bore/sleeve. Give me your thoughts...

