CAUSE of the ENGINE FAILURE
Ever since the engine failure, it bothered me as to WHY it failed because oil pressure was never a problem since I had the car. It also bothered me that the bell housing had been fractured in several places and was welded together.
The engine “told me the story” one day when I decided to clean the sump. The baffle plate was still mounted inside the sump and I had to remove that in order to clean the sump nicely. This is what I found when I removed the baffle plate:
It was clear that some Previous Owner had driver the car into an obstacle, which caused extensive damage to the sump and the bell housing. They must have driven the car without oil for some distance (which caused damage to the bearings) and they then replaced the sump with a new (or used) unit, welded up the bell housing, filled it with oil and sold it on the the next owner. They clearly did not bother replacing or repairing the baffle plate. I tried my best to straighten in out a bit.
Once the EFI conversion was complete, the engine was running very well and I, not knowing about the condition of the bearings, did not hold back, often venturing into the 6500+ rpm range. Needless to say the crank seizure just had to happen sooner rather than later....
It bothered me shortly before the seizure that the engine was making a sound which I misinterpreted as knocking/detonation/pining. Now I know that those noises were early warnings of the bearing seizing onto the crank.
I am most grateful that the conrod did not break knocking a hole into the crank case...