I was running my xxx-nt and one of my engine mount screw must of vibrated out and it started running weird so i took the engine out and the case was cracked! But would the done anyharm to the piston sleeve or crank or anything?

i wouldn tthink so. Do you have a pic?

yea lets see a pic.

no i dont have a pic dont even have a digital camra

Ya'll desperate to see a busted case??
here ya go

wow. made in taiwan. [:'(]
your piston an sleeve should be fine. you can just replace the case. And to be on the safe side id run it through a short break in with the new case. i might try and call your local machine shop and have them spot weld that mount back in place its just aluminum it doesnt take much heat (comparitive to steels)
the later being tthe easiest. hope this helped