I went driving yesterday night and drove the car pretty hard on gravel roads (fun!), and when I got home I noticed an ugly rattling as I rev the engine. I took a youtube clip of the noise which I'm posting here in the hopes of someone having an idea of what it might be: http://www.youtube.com/watch?v=92xVttGnA8U
The engine sounds the same when idling, but as I rev up you can hear the rattle. I've looked around, and some people have suggested that this might be a timing belt, ac compressor or rod bearing (this video suggested that: http://www.youtube.com/watch?v=psQosyVc7z0 and it does sound kinda similar).
Can anyone help me out?