Originally Posted by sai_crdi
thanks for the link. I posted this question to know more about what category work has been undertaken on the engine and how A.S.S usuallly categorizes the lathe work on engines.
Trying to know the requirement for why major integeral part (piston,rings, reboring) of the engine requires a lathe work and symptoms after effects of the same.
example : when a piston needs to be changed and when (and why) reboring should be done
After a long term of operation the engine side wall wears ,obviously there is no other option but to re machine the wall to smooth out irregularities as mentioned above by drifter and use bigger Diameter pistons.
yes, engine block on lathe for reboring, does sound nightmarish. alignment for the machining would be next to impossible for such a complex part .
it would better be done on milling machine.