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Robert is correct that many engines can run LOP right out of the box. I
wasn't as lucky with my IO-550N from Performance. I had 1.7 gph spread!
GAMI initially sent a set of "E" sized injectors to get me in the
ballpark, and then we swapped out 3 and 4 with "F"'s, and the spread was
down to 0.2 gph. The engine loved running LOP. I ran my ES WOT, 2500 rpm
at 10,000 at ~ 11.5 gph and 184 KTAS.
Paul Bricker
On 8/25/11 7:48 AM, "Lancair" <lancair-esp@ustek.com> wrote:
A lot has been written about GAMI injectors but they are far from
required for LoP operation. I had a Lyc IO360 by Aero Sport Power,
Kamloops BC in my GlaStar and ran the GAMI fuel burn test. The fuel
flows were beautifully balanced and I ran LoP just fine. The plugs were
clean at every check and I had 500 hrs on it when I sold it. Changed the
plugs once. Saved 1.5 gph as I recall.
After break-in of my Cont. TSIO550 by Performance (yes, THAT Performance)
I ran the same burn test and lo and behold it too had great balance. All
cylinders peaked at about the same time although at different
temperatures. I cruise it TIT 1550-1600, EGT 100F LoP 17.3 gph set at
2500rpm and 32˛. Plugs are clean and the engine runs smoothly.
Aircraft have run LoP for decades without GAMI injectors, so test the
engine before you hurry to pay the cost.
Robert M. Simon
ES-P N301ES
From: Danny Miller [mailto:danny.miller@verizon.net]
Subject: RE: How do I run lean of peak?
Gary, et.al,
I certainly canšt speak to what others are getting but I have GAMI
injectors and my engine has been flow balanced.
--
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