Posted for "Shannon Knoepflein" <kycshann@kyol.net>:

I think the % of pilots that run actual LOP is probably less than 10%,
of which your engine builder has seen very few I'm sure.  Now, there is
a difference between running lean, and running LOP.  Running 50-70 ROP
is probably the most dangerous area to run your engine, as that is where
peak CHT's occur, as well as peak internal cylinder pressure (ICP).

I just can't see how properly running LOP would ever burn a valve, it
just doesn't make any sense.  Running 70 LOP or 70 ROP is the same EGT,
where LOP has cooler CHT's.  I can't see HOW this would ever burn a
valve.

Someone please enlighten me?

I can see how improperly trying to run LOP and not having balanced
injectors could result in engine problems (having one cylinder at 70 LOP
while the another is a peak, or even ROP).  Balanced injectors (GAMI's)
and proper engine monitor (all 6 cylinders) and proper running of LOP
should result in long life.

I'd be interested to hear from guys that have this proper setup and
properly run LOP and see how they faired?

Shannon