ERF:
railstaff:
I cant be sure,but looking at the previous picture of half a v8 it appears to have “end to end” cooling,by this I mean the coolant doesn’t pass through the block deck into the heads.Im I right?No, there are 5 large and several smaller passages between each block deck and head.
There are end connections in each head (and the rear of each bank of the block) which are used to pass the coolant from one side to the other via the external transfer pipes.There isn’t even a coolant flow diagram contained in the service training slides from the BL course designed to train fitters on the engine. There are plenty of oil flow diagrams, but all you get coolant wise is a slide showing the components.
A good clue to the circulation is in the CM launch article, which basically corresponds with how I perceive it to work…
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It’s interesting to note the comment in there on block water passages, because too close spacing of cylinder centres within a block is a noted cause of piston skirt scuffing, and that is another problem that the AEC V8 in all of it’s capacities suffers from. Yet another problem that would not have existed if the block had been just a few centimeters longer.
Let’s get this right.The right hand bank doesn’t get any of the cold water input directly from the rad and water pump only the left hand bank gets that ?.
While the right hand bank only gets the already heated water from the left hand bank to then have to put its own heat transfer into ?.
Blimey and I thought the side flow 1 1/2 pass rad system in the Jag V12 was bad that alone accounting for a significant difference between the running temps of the left and right hand banks but at least both banks are fed with the same cold water directly from the rad and water pump simultaneously.In which case what’s the radiator spec of the AEC ?.Surely it’s not a similar side flow split pass system added to the right bank being fed with the already heated water from the left bank ?. 
Have you got the temp readings for each seperate bank either way ?.It would be a bleedin miracle if they were even close ?.