sleeve

While researching for a friend on replacing cylinder sleeves, I ran across numerous mentions of just heating the cylinder and the sleeves will just fall out. Since I have a 20T press, I'd offered to press the sleeve out for my friend... but the idea of just using heat intrigued me. And...

took my engine out to fix a left cylinder smoking/ oil consumption issue. Thought it was valve seals or rings. had good compression though. found no smoking gun until I Was about to put it back together and noticed a crack in the left cylinder sleeve. starts at the top and goes about half way...