But it was cheap gas, right? )


Trip

In article m1She.81588$NU4.17695@attbi_s22, says...

Today on a long cross-country flight I experimented with the "lean-find"
function on my JPI-700 EGT/CHT meter. As always, it told me to stop leaning
when my fuel flow was right around 15 GPH. (This at 5500 feet, and 23
squared.)

Using the wisdom of the group, I kept pulling the mixture back until my
FS-450 was showing around 13 gph fuel flow, watching the EGTs and CHTs like
a hawk.

Obviously everything did run hotter, but EGTs never topped 1550 degrees, and
CHTs never topped 360 degrees. This is a tad hotter than I've been
running, but the engine sounded fine, and all cylinders stabilized within
100 degrees of each other -- which is as good as it gets on my normally
aspirated O-540.

Later, climbing to 8500 feet, we pulled it back to around 12 gph, with the
same results. (We usually would run around 14 gph at that altitude.)

So, perhaps I've been wasting gas for no good reason. Thanks to all who
responded.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"