<<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
         <<  Lancair Builders' Mail List  >>
         <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>

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

LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html
LML Builders' Bookstore:   http://www.buildersbooks.com/lancair

Please send your photos and drawings to marvkaye@olsusa.com.