Well, the new Westerbekes may be a diifferent animal, dunno.
The old 4-107 that I owned however was not impressive in any way.
boat has a Perkins
4-108 that is 26 years old and it purrs like a kitten.
Heard other 4-108 owners say they are bullet proof with plenty parts
all over the planet.
A guy I know had one in his CSY 37
and had it overhauled at 15,000 hours, not 'cause there was anyting wrong with the engine, the high hours just made him nervous..