Hello guys , a friend is having an issue with his engine he just build it and like 200 miles after a cylinder got broken for some reason , he has stock sleeves , wiseco pistons, pistons are overbore to 82mm, eagle rods , ACL race bearings , built head ( ferrea valves, briancrower springs), arp head studs , dsm inyectors 450cc , we are just trying to figure it out how the cylinder got broken , we are getting another engine block but if he made a mistake , he really want to avoid this on the next build , thanks in advance.
