friend of mine has a 22r overheating motor just rebuilt at a machine shop over heats he tried a bigger radiator new water pump new t-stat what do you think i'm not a toyota guy but i told him to check intake gasket i have seen a motor with the wrong intake gasket blocking off a port to the block also i told him to check compresion maybe bad head gasket or valves set wrong any ideas that i can tell him he is worried he is going to ruin a brand new motor due to overheating....also he is running propane let me know what ya'll think ............thanks