DIESEL HEAD STUD RETORQUE
In our shop we do a variety of cylinder heads for late model diesel trucks. On jobs like 6.0 Fords, 5.9 Cummins, or 6.6 Dura- max our customers often install ARP studs as in improved fastener. ARP highly suggests that the studs be retorqued after the engine is run for the first time. On a job like a 6.0 Ford, where the truck cab has to come off to service the head, this is not practical. One customer came up with a good compromise. On his Ford 6.0 they installed the heads and properly torqued the studs. They plumbed the engine to hold water. Then they plumbed in an additional tank style heater to the side of the block not equipped with the factory heater. They allowed both heaters to run all night. The next morning they retorqued the head studs. It’s not quite like getting the engine running for retorque, but about the best you can do without removing the cab for a second time.

Brad Luck
Weaver Parts
Sauk City, WI.
May, 2015