[534BC]

A lot of engines can be bored "blindly" up to 1/16 " and lots of piston makers offer oversizes in that same amount. This is mainly done for service life and should be done only to the next required size by wear.

Some engines can be bored a lot more, but should have the thickness of the cylinder walls tested to ensure adequate thickness there. This type of boring is done for displacement increase (power) and uses up all the "lives" of the engine.

Oops, I struck water jacket, time for a sleeve.

Typically older engine can go a bit more than newer engines.