Liner O-ring failure

[Truckdriven]

Ok I'll try to answer all your questions,
Did I consider and plan for an overhaul this soon? Yes I consider buying any used truck a high risk of needing to do an overhaul very soon, especially in this case and will not be cutting any corners to build it right. Since I am not in the position to buy new trucks this is a risk I took figuring not all is lost if I need to overhaul it since I can build it properly myself and actually have a reliable engine then

And yes this is the same truck I sent the unknown file from back in march, interesting to learn what the history was before

I looked at things closer and Rawze seems to be correct about the dropped liner, but there were no signs of a blown head gasket. I looked closer at the thrust side on the Block and there is definitely fretting there, I'm glad to know that the O-ring is only a backup seal therefore if I counterbore it correctly I won't have to tear it down again for a deteriorated o-ring. I looked at the head and didn't see any steps worn in the head, but when I peeled the gasket off there was a space on each cylinder where the gasket wasn't stuck fast as if it was working at blowing through the seal?? Also while looking at the head closer I noticed every cylinder has cracks in the head between the valves, some have cracks between every valve on the cylinder, a new (not reman) OEM head will be here this week.

According to Rawze when the file was checked it was set at 565/1850 when the file was fixed back in oct.2021

I do not know the condition of the other o-rings yet as I want to measure liner height yet before I take them out, I will post more pics of cylinder walls, piston tops before long.

I am not arguing that it it should have better gearing but I always questioned what the difference is, if I stay down shifted to keep rpms up?? is that much different than having 3.90's or 4.11's and being in a higher gear?