"Dave S" wrote in message
k.net...


Robert M. Gary wrote:

Am I missing something?

-Robert

Heavily turbocharged engines dont have short TBO's because of inlet
plenum failure due to air pressure fatigue.. they have short TBO's (when
operated improperly) due to cracked cranks, overheated cylinders,
excessive wear type stuff.

So.. no.. its not a marketing gimmick. Turbonormalizing an engine isnt
as big a deal, because the engine is not intended to exceed its original
"normally aspirated" sea level power rating.

A popular engine mod for the Beech B36TC is to swap the TSIO-520-B for a
TNIO-550.

Better performance and TBO goes from 1600 to 1700 hrs.