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Old 11-16-2011, 08:04 AM   #10 (permalink)
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Location: Finland
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Carina - '93 Toyota Carina E GLi
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That's a good idea. It would have to have a electronic valve to monitor the temperature in the tank so it wouldn't circulate if it's too cold. It would mean a bit slower heat output to the cabin as hot coolant to the heater would come through the cold engine block at startup. I modified the "blueprints" a bit. I like drawing in PaintCAD.

As such, coolant would only flow when:

-Temperature of tank hotter than engine
-Engine is at normal operating temperature (thermostat is open)

This would rob some hot coolant from the radiator, but given the flow speed and size of the interior, I don't know if it will be noticeable.
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