Originally Posted by
43Inches
It still does not specify particularly that you can fly up to that temperature ...
It does per the rules of the game, FAR 23 as at the time it was certified - any limitations must be stated specifically.
Originally Posted by
43Inches
... what if it was 49C at 10,000ft Elev, I doubt the engine would cool well then if it was still capable of high power.
Certification rules are very specific on the substantiation of engine cooling. The Type Inspection Report provided to the FAA would answer your doubts.