We rebuilt a 161 out of a hr shooting wagon. It was still going quite well. A couple of cracked pistons. It had been cooked and then driven for hours with regular water top up from dams apparently.
I pulled 8 or 9 old failed welsh plugs out of the block lol. Probably wasn't helping the water flow in the block lol.
It got a hone out and new pistons. Then it got put on a welder. It was still going great when we sold it.