Quote:
Originally Posted by DBSHELTON
I am going to use the head for a drill guide since the drill bit for the helicoil will fit through.
Before I pull the head, should I over-torque the nuts to maybe 75ft-lbs to make sure all the threads are good and this won't happen again?
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Just for your information, 75 is a very conservative number for testing deck threads on a flathead Ford. We test at 100 ft lb.
Testing should be done while doing machine work on the block and before any cleaning. This way you are assured there will be no drilling or machining after assembly with the consequent chips getting inside.
Threads should be chased with a tap, not a chaser. You CAN NOT get an accurate torque reading with rust and scale left in the threads.