"O. Sami Saydjari" wrote in message
...
Is there a website I can go to find out the TBO and overhaul costs of any
given engine? Right now, I am curious bout the GTSIO-520-L on a Cessna
421C.

-Sami
N2057M


The TCM GTSIO-520-L as overhauled by any reputable overhauler or as a
factory reman has a 1,600 hour TBO. The later Cessna 421C models (those
with trailing link landing gear) had GTSIO-520-N engines, similiar to the -L
but with a different fuel system. They are a little more expensive to
overhaul for that reason.

The Cessna 421B (tip tank model) has the GTSIO-520-H engine. Early ones had
a 1,400 hour TBO, later ones with better cylinders have a 1,600 hour TBO.
All the Cessna 421's are rated at 375 HP/engine.
Allen