If really solid, especially if you hear it cranking, sounds like a spun bearing. And yes, verify that the oil pressure sender is accurate, shouln't run 3bar always as that indicates open circuit IIRC. If not that solid, maybe the vacuum-pump has failed and not yet terminated the engine?

Where are you located? I have the short-block out of my '87 under my workbench.

__________________

Gone to the dark side

- Jeff