8RT vs 8BA

[1952henry]

They could have been dropped, overheated (cracked), milled, etc. Also, if an engine had been sent to a rebuilder, big or small, it may have come back with whatever heads the assembler put his hands on. Most wouldn't have paid attention, or even known about the compression differences. Heads were probably,checked, cleaned and stacked, ready to be put on an engine.

 

[Barry-ct]

Possible warping of the head for one. Back then , as now, the flatty's were known for always running hot. It's hard to say what went one some 60 years ago. I've been looking for some service bulletins from then, but you don't see them too often.

Barry

50 F-1

 

[1952henry]

Possible warping of the head for one. Back then , as now, the flatty's were known for always running hot. It's hard to say what went one some 60 years ago. I've been looking for some service bulletins from then, but you don't see them too often.

Barry

50 F-1

Good point.