Today I was working on my car. It needed a valve adjustment and a look over after getting it running again this weekend. So the stupid thing I did is I left the crank holder and breaker bar, that I was using to turn the crank, in and cranked the car. I cant believe I did that. The crank now has a crack in it. Now it is pretty obvious that I will have to replace the crank pulley. Can this be done with the engine in the car? Do I need to pull the engine out and look inside for anything? Is this extremely bad? Any help or suggestions would be very much appreciated.