I recently had my 1.8 liter engine swapped out with a 2.2 liter legacy engine. After driving for about a week (with noticeably more power) I started my car one morning and heard a screwed up noise coming from under the hood. I popped it and found that my crankshaft pulley had come loose and both of my belts were off. I only assumed that the bolt had not been tightened properly so I detensioned, rebelted, and fully retightened everything. Before starting the engine I made sure the belts were in good shape, the pulleys were aligned properly, and the bolts were as tight as possible. When I started it up the crankshaft pulley bolt came loose and the pulley shifted and the belts flew off again. I lost here. If anyone has any input I would really appreciate the help.
Thanks,
Josh