Quote:
Originally Posted by bNks334
As I pointed out, 69f my coolant can be overheating
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Maybe "overheating" needs to be defined. To me it means "in excess of the threshold at which power is pulled (117°C / 243°F)". Anything else is just hot.
I believe the N54 and N55 have different heat issues. N55 may be more critical with respect to oil temperatures.
Below are maximum and minimum coolant and oil temperatures for 9 full laps at Mosport GP with OE rad at 29°C OAT (84°F).
Anything over T1 is overheated. The coolant is overheated on every lap from 3 on. No change in thermostat tuning will alter this because even from a low of 100°C the car will overheat in 2 laps. This engine is putting more heat into the coolant than can be dissipated by the cooling system at a coolant temperature of 117°C or less. Had the DME not pulled power back, the situation would have been even worse. Say what you like about the N55, but the N54 clearly needs a bigger radiator on this track, at this OAT, and with this very mild tune.
Oil temperatures show plenty of margin.
