"Dylan Smith" wrote in message ...


But a far greater effect will be the additional wear from friction of
running at 2480 RPM instead of 2300 RPM - a significant increase in the
number of friction cycles per hour. I'd say the Archer's engine
will wear more quickly.

The number of revolutions acquired isn't the driving factor in engine
life. Flight school aircraft that are flown frequently and full throttle
tend to far exceed TBO where as babied, infrequently flown single
owner birds tend not to get anywhere near TBO.