Ok I tell what I think. I did a leak down and compression test a week ago. It was great. I never seen anything to make me think cy wall was cracked.I know all the signs of that. the last motor that cy went though 2 sleeves over that. with that said. that rod was in that cy. I think something was wrong with that rod when I put it in Had new bushing put in all the rods. would of thought if you could seen it. the machineist or I would of seen it. with that said .I never reuse a set of rods .. I think at this point the rod just broke. there is no signs of heat anywhere. you would of seen that in the bushing.Thats is what I think right or wrong.still need to take it all up to the machinist see what he thinks LOL