Seems my first impressions are rarely wrong:

Gee, I wonder why cylinder #5 had "0" compression?


Closeup of "the hole".


Closeup of the damage to the cylinder wall where the hole in the piston was located.


Scoring of the cylinder wall in cylinder #5.


Piston from cylinder #5 removed ... nothing else to say, this images speaks volumes!


Cylinder #2 caught my eye, so I removed it as well for a close look at the ring lands to see how far the pitting went.


Closeup of the pitting and coarse texture on pistons #2.


Cylinder #4 had the same piston pitting and coarse texture.


Cylinder #6 as well.


What breaks off a piston must go somewhere, in this instance, embedded into the head. This head is shot!


Other side of cylinder #5's combustion chamber.


So, how do you like my choice to go 3L now? Yes, it could have been done cheaper, but I wanted a "fresh" engine to build on. I have no doubt that a lawyer will enjoy taking this case ... it's an open/shut case

For Sale: 1997 Explorer XLT V8 AWD