Does anyone know how the cam could get warped, I replaced the timing belt it started up and I let it warm up and then I shut it off and it sounded weird and when I walked around I saw the crank pulley hanging by a shredded timing belt and the cam was locked up. Once I got the rockers off I tried to see if the cam was rotating smoothly in the bore to find out it's literally warped and it ate up the bearing type surface in the head. I wanted to know what could have caused this before I put another head and cam on it just in case this wasn't an anomaly