If it's just a tapping or ticking it's more than likely just a sticky lifter. Mine has had one for a long time and, like yours, it doesn't burn any oil and has good oil pressure. I did have it progress to a bad knock after it sat for a few months following a rollover but that turned out to be carbon build up on top of the pistons. A little water and diesel down the carb followed by some 3500 rpm revs and it blew black, purple and blue out the tail pipe and no more knock.
'84 CJ-7: Yota axles (spartan locked front, e-locked rear) 4" BDS, 1" Daystar & 3/8" shackle lifts, 35" X-Terrains on steelies, YJ Tub & family roll bar, heater blower upgrade, 4.2L w/MC2100 & Team Rush, Warn 8274. Rebuilt 4.2/4.0 hybrid, AX15 and twin sticks/clocking ring waiting to go in.
The advertised position for a topless, dirty jeep girl has been filled......by my wife. Thanks to all that applied.
<------------and yes, that is her. :-D