Does an overhaul un-lemon an engine?

Mark Hansen wrote:
On 5/9/2005 09:56, xyzzy wrote:

If an engine has been overhauled 3 times, never making TBO either time
(not even making it to 1/2 of TBO 2 of the times), should I be
concerned that it might be a lemon, or if the current overhaul was
done right and the engine has been treated right since then, should I
not worry about how it did before this overhaul?



That's a really good question. Do you have "The Complete Overhaul"
by Kas Thomas? This is a really good book on the overhaul and industry.

Yes! A big agreement on that. An excellent read for an owner.

snip


To determine why your engine didn't make it to TBO, you may
have to look at the shop that did the work (assuming the
engine wasn't mistreated, of course). Perhaps they have a not
so good reputation?

Maybe so, but I think there are some more important factors:
(1) luck, and
(2) operation technique (cold starts, high RPM starts, frequent or continuous
high CHTs. Against my religion, but some would say: shock cooling.

All just my opinion, of course, worth what you paid.