Quote:
Originally Posted by Wayno
Traditionally fans on over 40mph will be causing less flow than if they're off, so careful changing the highest value (M1 max, M2 min) in these tables.
M0 max(-) - 194 (90C)
M0 max(+) - 197.6 (92C)
M1 min - 199.4 (93C)
M1 max/M2 min - 203 (95C)
What this means is:
M0 - 0 to 6mph (10km/h)
- fans will come on if engine is up to operating temp.
M1 - 6mph to 40mph (10km/h to 65km/h)
- fans will be on if the temp is above the normal operating temp of 93C/199.4F.
M2 - 40mph to 80mph (65km/h to 130km/h)
- fans will only be on if the temp is above 95C/203F.
95C/203F is the temp at which the thermostat is fully open.
(I've only ever seen 95C/203F at idle, never while moving).
M3 - Above 80mph (130km/h)
- fans should be off regardless of temp.
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What if you wanted to lower the fans kicking in earlier for the M0 / 0-6mph range only? Scenario I'm thinking is parking a car post a track session. Coolant temps by the time you get back to the pits might be low enough to not trigger fans but oil is still high.
Currently I run the A/C to force fans and keep air going through the oil cooler and radiator. But it has been mentioned that the AC condenser is adding extra heat to the mix so would be preferable to eliminate that.