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Recently I purchased a (used)2003 lq4 built in corpus Christi. The 6.0 was supercharged and was in a 2006 Goat. When I took the heads off, I could tell water had made its way into one of the cylinders. The machine shop said that the valve seats were nearly non existent, so the 243 heads got a valve job. Then i fliped the engine around and made a short video, looking for some input. I have a 98 z28 camaro with ls1. The reason I purchased the 6.0 was due to the fact that one of the stock head bolts broke off in clynder number 1, and I could not for the life of me, get that bolt out. It broke off in the verry bottom with the last inch 1/2 in the bottom of the hole. I'm wanting to take the ls1 to a machine shop to get the bolt out eventually. However, considering the engine has over 160k, it would be wise to rebuild it before putting it back together. The main task right now, is making sure this lq4 is good to go, so I can drive her again. I miss playing with the stick. Link to videohttps://youtu.be/hu9HAzzanfI
I guess I'm confused on what you're really wanting to know, Obviously the water damage to the cylinder isn't normal and rust damaged cylinder walls aren't good either. If you're wondering if it will run that way then I would say yes but how well that one cylinder seals is not going to be evident until you actually get it running. Nobody is going to be able to tell how bad the damage is from the pictures.
I guess I'm confused on what you're really wanting to know, Obviously the water damage to the cylinder isn't normal and rust damaged cylinder walls aren't good either. If you're wondering if it will run that way then I would say yes but how well that one cylinder seals is not going to be evident until you actually get it running. Nobody is going to be able to tell how bad the damage is from the pictures.
The rods moving some side to side is normal, You can look up the clearance it actually calls for and measure it pretty easily with feeler gauges, The holes in the crankshaft were put there to balance the crankshaft, The crankshaft is spun and a machine tells the machinist where to either add or remove weight to balance the rotating assembly. The hole by the reluctor wheel does look rough as in amateurish, I'm not really sure why it was done that way. If you're unsure of anything I would take it to the machine shop and ask them to look it over.
I went back and read some of your posts, If you're really this new at working on the engines I would like to offer you some advice. Either find someone with experience to help you put it back together or pay the shop to at least put the heads on and put the cam in it if your replacing it. At minimum watch several videos to get yourself familiar with installing head gaskets and properly torqueing them to spec.
that hole in the counterweight looks like it might have had a heavy metal slug in it at some point in time and someone boogered up the hole trying to remove the heavy metal. I can't imagine any other way the hole would look that chewed up around the edges. Just my thoughts.
that hole in the counterweight looks like it might have had a heavy metal slug in it at some point in time and someone boogered up the hole trying to remove the heavy metal. I can't imagine any other way the hole would look that chewed up around the edges. Just my thoughts.
I think that was likely a factory drilled hole for balance that somebody put some weld in when it was re-balanced at some point. Kind of hard to see clearly.
Take bottom end to machine shop and have them inspect that cylinder and see if it needs to be honed. While they have it have them check the balance on the crank to see if something is off, i'd be concerned with that funky hole and there maybe being a balance issue. Have them balance the entire assembly as well.
I would have used some transmission fluid and scrubbed down on that bore and seen what underneath. Might have just been some surface flash. As for the side to side clearance like others said, that's fairly normal and the side to side spec is actually .004 - .020 so there is a wild variance that is acceptable. As for the end of the crankshaft plug, yeah looks kinda hackish. Not sure if like others said a piece of heavy metal fell out, or when the machinist was drilling the block to balance he had a dull bit and it snagged and did that. Its ugly, but if the assembly is balanced it's not gonna hurt a damn thing.
Lq4- is this normal...? 
Link to videohttps://youtu.be/hu9HAzzanfI
