Im having alittle trouble figuring out what this noise is coming from my engine and was hoping that someone here can identify it. So far ive re-adjusted the vavle lash three times to no avail and also changed the timing belt because it was really loose. I have read that it could possible be a bad or clogged oil pump and screen, not allowing enough oil to get into the head, but what do you think.

Heres the noise:

http://www.we-todd-did-racing....DE%3D

Thanks,
Ryan