Ok......thanks for the reply.......per your statement in that other thread it looks like we -agree-
quote from 8-ball
""""I think what people are trying to envisagewhen they say fast through the block and slow through the rad is,
a. cold water into the block to maximise the temp difference between core/block and coolant.
b. lots of time in the rad so as to get rid of all the heat.
The best way to do this is to have either a wide radiator so it moves slowly through the rad, or a long radiator, so it moves at the same speed just in there for longer. Both of these mean having a bigger radiator. That's the only way of having each unit volume of water spend more time in the radiator for each unit of energy it picks up from the block.""""""
end quote
Based on your statement above, since the loops would be separate in this case with separate pumps (I assume) then adjusting the flow without affecting the water block would be easy.......