Quote:
Originally Posted by v8volvo
Regarding your questions about coolant flow:
How is the current engine in the QSW set up? Does it have a method for continuous recirculation? Or does it use a heater control valve? Since the 2.2 gasser is the same fundamental cooling system design, maybe whatever they did to integrate that engine in the car could be done the same way for the diesel?
And what about in an old 5000TD like what this 2.0 presumably came out of? Do they have a heater control valve or does the heater circuit run continuously? And how does the oil cooler circuit work on the 2.0TD? Is it like the D24T where it's fed from the back of the head?
It's an interesting problem to try to solve, but one assumes the original designers must have thought about it too, so maybe their solutions are a starting point at least.
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The QSW does have a heater valve, some type of ball valve, cable operated just down-flow from the back of the block/head.
I'm not sure about the AUDI 5000 or 100, whatever this came out of. Since it's a VAG vehicle it may be similar. My 1985 Jetta is just the opposite, there's always flow going through the heater core.