it is a berkely pacajet must be some production run ford did for glastron. last yr i sucked have the bottom of lake huron up the pump overheated it bent 4 valves & push rods etc, tore it down sent the heads out new lifters rocker rollers etc . yesterday i pulled the hoses off that feed the wet logs started the boat ran great no water. turned the boat off let the water just run for 5 min with the log feeding hoses 80% piched off. got in turned the key fired right up ran good. must be cracked logs or risers or both like you thought. ran good no water in my oil afterwords.but like ya said before my top end rebuild it ran about the temp at :the surface of the sun lol still havnt got all the burnt rubber off the back of the hull!!!!