In reply to DarkMonohue :
Interesting; thanks for the insight!
Part of the problem/confusion is that there doesn't seem to be all-in-one factory service manuals for the Land Cruiser the way there are for Toyota cars...maybe because they are heavy-duty? In any case, there are chassis manuals that cover all bodystyles, wheelbases, and powertrains, and then there are engine family manuals that cover lots of different variants of engine and vehicle models using that family of engines. Imagine you have a *8 Corolla chassis manual that covers every Corolla on that platform for chassis but not engine, and a separate A-series engine manual that covers everything from a 3A-C to a 4A-G to a 7A-F.
The B family of engines dates way back, and mine is a 3B. The engine was substantially revised in 1988, often called the 3B-II, and apparently a lot changed. I know of B engine manuals dated 1977, 1980, 1988, and 1994. I have the '88 and '94 manuals, but I don't trust them 100% and I can't find the 1980 one, which is probably the most pertinent one for my engine.
Here's some pertinent interesting discussion: https://forum.ih8mud.com/threads/b-2b-3b-diesel-crankshaft-bolt-torque-bearing-cap-12mm-13mm-16mm-and-connecting-rod-cap.1322217/
The snippet from 1980 manual in the link above just tighten to the torque spec, but we just have a snippet, not the whole manual. The 1988 manual says tighten to the (considerably higher) torque spec in two passes, then add 90 degrees, and replace any bolt that doesn't meet the torque spec, or if the bolt breaks or deforms. The 1988 onward engines have different part number for the related parts. So.......um, maybe?
