09-09-2021, 07:20 PM
Yes. use a suitable block of wood inserted between the inside of the crankcase and the crank to block it and prevent it from turning. If the crankcase is out of the car, you may need a big mate to hold it steady whilst you undo the nut. A few good blows on the end of a breaker bar with a well fitting socket should get it moving. (3/4 Whit if memory serves me but don't take this as gospel).