FWIW I have packed a cylinder with manila rope at BDC and when it rotates up against the head it will hold the crank nicely, then you can apply all the leverage you want, so long as you've strapped the motor down to something substantial, like the bed of a pickup.
Then you just remove the rope back through the spark plug hole.
saying that makes me appreciate my 600 ft lb impact.
Then you just remove the rope back through the spark plug hole.
saying that makes me appreciate my 600 ft lb impact.