just use the breaker bar big long half inch dude and like brace it against a hard component of the suspension or chassis. then unclip the coil cable or like pull out all spark plug leads an crank the motor over a few times. Get someone to help u with the bar holding in place. This way it for sure to get ****ing crank pull bolts off. **** sucker bolt man. Ar... don't loose the lock key on the pully, or else ur f**ked. if it does not crake the nut for sure will loosen it. Then hit it with rattle gun. Com off for sure. If that does not work ur going to need to take it to a mech.