Jeep Grand Cherokee Piston

How Warn Can A Piston Get That Needs To Be Replaced Because I Have A Jeep V8 4.7 And The Sizes Are 92.88, 92.90, 92.70, 92.82 , 92.87 , 92....

Have An Engine Knocking Noise That Almost Sounds Like A Wrist Pin Or Rod Knock But When You Listen To It Mechanics Ear It Is Not Knocking...

Changed Rod Bearings Torched At 45 Used Old Bolts Engine Turned Over 1 Tim Then Locked Up