I'd say that if the mechanic is ... competent, experienced, takes the time,
and is honest ... he can tell you pretty much what to expect from the
engine. For example, a look at the spark plugs, the oil, a compression test,
and a good ear ... will tell a lot about the engine condition. And a visual
for say oil leaks will tell if some regasketing (e.g intake manifold gasket)
is required. My opinion, an engine if not abused will last a long long time.


"JG Wall" wrote in message
...
I am looking at an 1989 Peterborough Constellation 19.5' Cuddy with a 185
hp
4.3 L Merc I/O as my first used boat. Seems well maintained and in great
condition. If I decide to go with this boat, I will certainly have a
mechanic at the local marina do an inspection - however my question is,
with
726 hours on the engine, is that a lot?? And how many hours from now on
average can I expect to need some major repairs/maintenance. Carburator
and
outdrive are new.