Tapping noise from engine.

[robbz28]

hen i crank up my car there is a distinct tapping noise that sounds like a lifter ( trying to give a comparison for sound) it does increase with rpms but gets unnoticeable after about 1200 rpms. I need to run the engine a while and let it get up to operating temp to see if it remains. Any clues? Is this a "normal" sound for these engines? Its not real loud but you can hear it clearly at idle tat-tat-tat-tat-tat...