Ok, likely final post in this thread (maybe). The new engine is in, runs great. I had to pull the injectors after the initial start up as I had pinched an O ring on the re-install and it leaked. I also had electrical issues with the headlights and horn, turns out sometime in the past an aftermarket alarm system was installed, I pulled that crap out and problems solved. So as of now it’s all done.
Thanks to FJ80Oregon for the new engine and the help along the way
As far as what was the initial cause of the failure, I don’t know for sure. Four of the 6 bearings on the old engine had spun, the other 2 were good. I don’t think it was the filter, the engine had been worked on in the past, my mechanic buddy thinks the previous owner knew there was an issue and dumped it before it blew. I probably will never know. I’ll rebuild the old engine, the crankshaft and block are not affected, so it will be an as new long block when I am done.
I’ll post a list of everything I replaced and where I got it for others reference. I pretty much replaced or rebuilt everything on the engine.