Water in- & outlet 4agze ae101

[jondee86]

I have no idea what the two small hoses attached at F and C are for ?
Maybe they are for a water cooled turbo... or a heated throttlebody ?



But the principle is clear. Take the "flow" line as close to the head as
possible, and connect the "return" line as close to the pump suction as
possible. This gives the greatest pressure differential to ensure flow
takes place in the circuit.

Thermosyphon action is something quite different, and does not apply in
a pumped system. The last vehicle I saw with a thermosyphon cooling
system (no water pump) was a 1950's Fordson van



Thermosyphon action requires the radiator to be higher that the engine,
so that hot water can rise and flow from the top of the (side valve) head
to the top of the radiator. After losing heat in the radiator, the denser cool
water returns to a connection low down on the block.

Cheers... jondee86