Sadly, the folks that badmouth the geared/supercharged Lycoming engines (IGSO480 & IGSO540) don't know what the heck they are talking about,
unless...they refer to the pilots who positively absolutely don't know how to operate them properly...which is the vast majority of pilots, today.
OTOH, if these engines are operated carefully, by a pilot whom has been shown
how, they can provide superlative service.
How good...?
FAA approved 2600 hours TBO, for certain operators, long ago.
Yes, and with minimal cylinder changes.
Younger folks simply are in the dark with these engines...why am I not surprised?
