I remember when my dad had to remove the crank bolt for his '85 BMW 745i. If you've ever tried getting that off, you need to have 800ft lbs of leverage on the thing, and that is the only way to get it off. He had a craftsman breaker bar, which he broke. He had a snap on breaker bar which didn't have enough leverage. And after two weeks of trying to get that bolt off, he finally did with a 4ft breaker bar. Now, I doubt that the bolt for our bonne'* needs that much leverage, but it just goes to show, you're going to need a lot of strength and a big breaker bar to get that bolt off. Padgett'* method will work, but as he states, if anything is not right, don't do it. That is an EXTREMELY dangerous method of removing it, but will work if done correctly. The safer method is to just get a bigger breaker bar..
'89 SSE - GX3 -190k, 155k on body - Back for another ride.