so if the engine is more efficient it should run cooler?
Honda Racing F1 @HondaRacingF1 13h13 hours ago
Comprised of over 3,500 components the Honda F1 power unit reaches up to 900°C at full power. #F1 #HondaF1Fact
It's a bit more complicated than that. I'm sure some others could give a better (or more accurate) explanation than me but generally you want the gap between the temperature before the fuel is burnt and after to be as large as possible. So cooler air temperatures helps efficiency - though increased air density and lower cooling requirements help as well. This is why there is an inter-cooler between the compressor and the inlets - compressing the air increases the temperature so cooling it back down helps improve efficiency. On the combustion side, the better the fuel burns the more heat is produced, which generally means higher temperatures in the exhaust (and more noise).
Generally it is considered an advantage if your engine can run at higher temperatures. I remember comments from Honda and McLaren talking about how they can handle higher temperatures (ie it gives them an advantage).
Edited by CPR, 09 August 2016 - 09:28.