I found for getting my crankshaft pulley bolt out was to remove the starter (I have a manual transmission) turn the flywheel till I found a decent opening to put a crowbar into it and jam it so it doesn't move. Then, take a breaker bar with an extension (aka cheater bar) and turn that pulley bolt it'll make a pop but it's ok I've done it to a number of cars, flywheel has never been damaged and it always works out well. Just in case you don't have an air compressor this works well