Producing > Rated Power in a Piston Engine
On a day where the QNH is high and temperature low (ie: a -ve density height) I believe I am correct in saying a piston engine will produce > published rated power.
I can't imagine this being a big problem given the relatively short duration of takeoff power and the actual change in BHP that these conditions might bring about. However would the higher internal pressures / temps cause any problems? TBO affected if this was a regular occurence (eg: cold, sea level climates)?
Taking the example of an engine which is not 'de-rated', are there any allowances in piston engine construction / maintenance for this occurence?
Cheers