identify this noise plz

[S13<3]

i think its coming from the timing chain but im not sure so i made this vid so u guys can help me out
also around 46 sec u see a white puff of smoke and i dont know where it came from, the motor isnt burning oil(that i can tell) and runs pretty hard but that noise is killing me

YouTube - sohc engine rattle
if it says video no longer available heres a direct link http://www.youtube.com/watch?v=af0k...fldrifters.com/forums/showthread.php?p=440029

 

[mandy240sx]

sounds to me like its the timing chain rattle

 

[Damian P]

that smoke looked/sounded like the belt but im not sure...

 

[S13<3]

its possible i have an exhaust leak at the header but im not sure, i checked the oil and after a month its at the same level so i dont think its burning oil, so what would the white smoke be? and what the hell is that noise!!!!!!

 

[xxnismoxx]

timing chain..

 

[mandy240sx]

yo that nosie is the timing chain 4 foooo. is that smoke constant cuz from wat i saw it looked like the belts just burnt a little