Well, good and bad news.
Good news is, I know exactly why each cylinder has the amount of compression that it does.
Bad news is, its an ugly sight.
Broken Cylinder 2 Piston, explains the 0psi a little
And if that doesn't lower the compression enough, this crack in the #2 cylinder head will.
And then, to explain the lowered compression which is almost the same in cylinder 3 and 4. I found this crack in the head.
And surprisingly, the head gasket looks good. There are no breaks in it at all, and by looking at the water passageways, it seems that this wasn't a new issue. Looks like somebody used some kind of stop leak in this jeep and the result was clogged waterways, some of the waterways on the head gasket were actually completely solid as a result of the "stopleak"
Soooo, no need to send the head off to be checked for cracks. Looks like the entire motor is coming out, and I will be looking into the route of a new motor. But, I have plans for this block, I will set it in the garage and rebuild it to go back in the jeep at a later time. That $275 for that jeep front end is sounding really good right now. So I may be acquiring that within the next day or so. As for now, my heep will have to wait.
Btw, that jeep is a 2000 jeep cherokee 4x4 auto and my jeep is a 2000 cherokee 2x4 auto, those motors should be exactly the same right? I've heard sometimes the transmissions make a difference in the rear main or something like that. Will I be able to put the motor out of a 4x4 onto my transmission? I would swap the whole deal into my jeep, but the guy says the tranny is slipping, and i don't want to mess with that right now (maybe in the future when it is more of a convenient 1 weekend swap). As for now I need to focus on the thing running.