Quote:
Originally Posted by patrickt
Did you drop the oil pan and retorque the rods? What about the flywheel bolts? I submit that a properly installed valve train in our engines should never, ever require a retorque. |
I am no PRO engine builder, but have probably built close to a 500 engines in the last 40 years and I would submit that anytime you have aluminum and steel interacting ...re-torquing is not only a good precaution, but makes an extreme amount of sense. If I have aluminum heads on an steel block, I re-check the head bolt torque after an appropriate amount of miles. The Ford crate engine I installed in the Coupe had an instruction sheet that even detailed that. I think many time blown head gaskets, water leaks and other "failures" could be minimized by regular re-torquing. An all steel/iron engine doesn't have the expansion variables that are involved in an aluminum/iron engine. Aluminum expansion varies depending on what quality aluminum is used as well.