Engine Rattle After Beverun Drift Day

[SirSilvia]

I hope I'm worrying over nothing big, but it's really getting to me.I started hearing it waiting in line for my next run. I thought it was someone else's car. I finished my run and pull out since the noise was following me. popped the hood and made a horrible sound. I quit for the day make sure I could make it home. Here's the vid: http://www.youtube.com/watch?v=ABSCTXBL3Z0

I have no noticeable loss in power/performance, and the rattle is not consistent through the RPM range (meaning doesn't get faster or louder at higher RPMs) When driving and cruising at about 45-55MPH its almost unnoticeable, idling however its bad, and revving at a stop is louder.

I'm hoping it's either:-timing chain rattle-bent/broken rocker-broken valve spring-everything that's more damaging than the above

What do you guys/gals think?

[slidestyle69]

lifter?

[xX RB Xx]

lifter?

i think so.. take the valve cover off and look the lifters..

it wont take but 10 minutes

[SirSilvia]

yeah I'll be doing that tonight hopefully