can somebody help me identify this knocking/ticking noise?

[booozy]

http://www.youtube.com/watch?v=KJZ9wWf6Hr4
http://www.youtube.com/watch?v=OVygYlKY3GE

A little back story, I over revved and broke a rocker arm. I replaced the rocker arm but in the process i undid the timing chain and had to reset it. I had an exhaust leak before I broke the rocker arm but it was not nearly that loud.