Reply to "Superior Radiator"

jfb05177Member

Here is my thoughts on fan switch
IF you want the fan to come on and off with the opening of the thermostat, then the ~185F in the radiator INLET (or even better the pressure tank or block). If the 185F is on the radiator outlet, the expected coolant would be 30 to 40F higher at the block exit when driving at low speed

If you want the fan to come on and off when the water leaving the radiator has been cooled, then the ~160F in the radiator outlet.

I have wonder if cutting the fan off when the radiator is cooling at speed is worth the trouble. the fan will still be free spun by the windage so if it is still "running" wouldn't it become a generator.

I have also though about using a dual probe meat thermometer taped to the engine outlet and pump inlet to see what the return coolant temp would be at highway speed. I was planning on cuting the fan on and off with the coolant leaving the radiator so it would be nice to know what thermal switch setting

4/13/152:25 PM

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