Originally Posted by newdad1
The machinist that did the machine work on the motor re-tapped it. Well, everything is put together on the motor, just went to put the pulley/harmonic balancer on, can't get 60 ft lbs on the bolt which is the spec. The harmonic balancer bolt is a 7/16"-20.
Can I retap the hole to 1/2-20 and try to get it to proper torque?
Kinda confusing at this point. If the crank was "re-tapped" IE: cleaned up the bad threads and hoped for the best" type of fix, it may have let go again.
Lets hope the guy actually drilled it out and did a proper helicoil fix.
The redneck fix would be to get the balancer on and then tack weld it to the crank snout! LOL Then put it on eBay!!!