This guys Rm-z 450 flat tracker went boom. The connecting rod blew out the front of the cases and smashed his motor mount bolt. The pressure was enough to suck the bottom frame rails inward. This just a simple motor job turned into a new frame job as well. Tryed to bed the frame back but the sprockets were not lining up right. This probably could all have been avoided if he just did he simple maintenance and had an hour meter.