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I have followed the debate and have learned a great deal.  However, I believe
the only engines I have seen discussed are turbocharged ones that can get the
horsepower back after leaning by increasing MAP.  I, unfortunately, (or,
fortunately, depending on how you look at it) have a TCM IO550G in my Lancair
ES and can't seem to dial up more MAP on demand so I see a deterioration in
air speed when I lean to 50 LOP.

Speed loss aside, am I to understand that all the details (except getting the
MAP back) that are being discussed apply to my engine and my situation?  
Probably a less than bright question but it seems to be the one I have at the
moment.

Also, I would like Mr. Braly's comments on the issue that was brought up some
time ago about valve stem lubrication and cooling by the excess fuel in a ROP
situation.  Also, there was the question of oxidation on the valves which
supposedly is more likely to occur in a LOP situation.  I have no opinion on
either of these points but would sure like someone who knows the facts to
express one.

I will now sit back and see where this goes.  Thanks to everyone who has
contributed to this debate.  This is exactly what makes our
sport/hobby/passion/business so much fun.

Jim Scales
98AF
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Please send your photos and drawings to marvkaye@olsusa.com.
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