Overheat is a combination of many factors: power settings, how open your rads are, how much air is going through these rads, ambient air temperature etc.
In other words, you could be cruising with rads almost fully closed at 450km/h and not feel a thing, or you could be engaged in a turn and burn dogfight and it overheats regardless of radiator settings because you are flying at full power and not enough airspeed.
The only way to be sure is to either test it a lot in single player scenarios (first thing i did for every aircraft i would fly is set up a free flight mission in QMB just to see how much i can get away with), or monitor those instruments in the middle of the fights (and risk losing sight of the enemy).
These are issues faced by the real pilots back then and as you can see, there's not a single solution for everything, it's more like a case of "everything is a trade off".
It's one more reason that many pilots didn't like dogfights and preferred a "single clean pass and then i'm out" technique, as the workload increases to the point that you can easily make mistakes or loose sight of the bandit.
That's exactly what i expected to see in CoD and the reason i was annoying everyone by repeatedly asking for improved CEM during the development of the sim
There are still a few things to fine tune but even though we don't have 100% accuracy yet, just the fact that we face these problems takes gameplay to a whole new level. It will be interesting when we have P-47s, La-5s and other high performance types in future add-ons, because they are a royal pain to manage properly
