So i've been hearing this weird noise...its like a clacking

Tat tat tat

But it only seems to get loud at 1900 rpms, 2000 it goes away, 1800 it goes away.

I was thinking maybe a lifter or something??

The noise progresses as such: tat tat tat tat tat (1900) TAT TAT TAT (2000) tat tat tat tat tat tat etc.

its weird.

I had tighten all my exhaust manifold bolts (some were finger tight loose) about a month or so ago because that was causing a clicking...i'm not sure if its the same noise though...that seemed to cause a clicking consistantly while accelerating and not just within 100rpms or so.

let me know what u think

Thanks