Re: Fuel Flow and Peak EGT


"Kobra" <kobra@xxxxxxxxx> wrote in message
news:07GdnVYQ4b9BP6_bnZ2dnUVZ_segnZ2d@xxxxxxxxxxxxxx
Flyers,

While flying to FL from NJ last week I did what I always do and fly ROP by
75 to 100 degrees. This is how I was trained and my CFII is also my A&P /
IA.

I know enough about LOP to know I will not operate LOP without an engine
analyzer and probably GAMI injectors which I do not yet possess.

If you keep running in that area (ROP) you might not have your engine long
enough to get those things.

How much would GAMIjectors and a Engine Analyzer cost compared to a top
overhaul (or worse)?


During the trip I was looking at my fuel computer and seeing an average FF
of 10.5 to 11.5 GPH at 6 to 7 thousand feet at about 22 to 23 inches MP
and 2400 RPM at 75 degrees ROP.

Why did you (if it WAS you) install a fuel computer but not an engine
analyzer? A fuel computer is _nice_, but only if you fly your tanks close to
empty, but an EA is a _necessity_. A $3500 EA does wonders to protect a
$20K+ engine.



I pulled my POH out and looked up the cruise performance numbers for those
parameters and those altitudes and I saw the recommended FF's. If I
leaned to the recommended FF's I was usually at peak EGT.

http://www.avweb.com/newspics/194816_mixture_setting_triangle_graph-basic.gif



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