Is crankshaft bolt reverse threaded? Yes, that bolt is normal thread, counterclockwise loosens it. The engine turns the opposite direction as the bolt removal direction to gaurantee that it won't back out.

Which way turn crankshaft pulley bolt?

A crankshaft rotates either in clockwise direction or anticlockwise direction only. Means, if an engine is meant to be rotated in clockwise direction, it will rotate in clockwise direction only.

Which way does a crankshaft bolt loosen?

Place your socket on the crankshaft pulley bolt and wedge the end of your ratchet or breaker bar onto the ground. Make sure when the pulley starts to turn, the breaker bar is positioned to push the bolt counterclockwise to loosen it.