gingerfold:
I believe that there is a display sectioned AEC V8 engine in a Birmingham museum if anyone wants to go and investigate its coolant passages.
No need we’ve heard enough.The already hot water from the left bank is used to cool the right bank with the right bank having no access at all to any nice cool water direct from the rad.Or is it vice versa. 
Meanwhile this is how they did it with just a 5.3 litre car engine let alone a 13 litre truck engine and that got hot enough. 
