I work in a large Foundry that pours parts for Subs and Aircraft carriers. If there is a problem in the metal content or mold or core issue, the part is scrapped. End of story. if the part continues thru the process and any defect is found, it is repaired. if the defect is above specs, the part is scrapped. I would find it hard to believe that any car manufacturer would past on problem casting that didn't meet specs. Rest assured that every member on here that has a family member that sails on a U.S. Navy vessel it is as perfect as humans can make it. No matter if the cast part is as big as a truck or as small as a pack of cigarettes....
