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Don't get me wrong, I agree that for the bimetallic strip to operate the water temperature in the rad must be greater than the operational point of the strip, however, the coolant temperature monitored by the sensor may not be the same! It's the temperature surrounding the combustion chamber that's critical to efficiency and power output - not the rad temperature! Just because the rad input is at 110C doesn't mean the engine is.
I am the first to admit that I may have missed the obvious, so if someone can explain why the M119.067 engine runs perfectly within the 85C-90C, as designed, and seen on my water temperature needle, then please do....
Lea
Edit...
Maybe I should mention that my reference to 'fan cut in' temperature is always the coolent gauge within the car. Maybe I'll mount a thermocouple to the rad this weekend and monitor the rad temp direct?
But, who cares for rad temperature? It's block temperature surely that's the main reason for cooling in the first place.
Last edited by LeaUK; 04-22-2005 at 05:46 PM.
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