Canuck
David Megginson
- Joined
- Mar 31, 2016
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Given another discussion on lean-of-peak operations with fuel-injected engines, I just want to repeat that you can also fly LOP on some carbureted 4-bangers: it just depends on how consistent the distance is from the carb to each cylinder. I don't imagine that would apply to a carbureted 6-banger, because some cylinders will necessarily be closer to the carb than others.
This is what the Lycoming Operator's manual for the O-320 claims (publication 60297-16, page 1-3):
Granted, that sounds like marketing BS, but my experience is that I actually can fly LOP-WOT smoothly in my PA-28-161 burning around 7.5 GPH instead of 10.0 GPH at 75% power, following the instructions from the 1982 Piper Warrior II POH (P/N 761 780, page 4-21):
This approach wouldn't work for a constant-speed prop, but for anyone else with a carbureted 4-banger and a fixed-pitch prop, you might want to give this a try.
This is what the Lycoming Operator's manual for the O-320 claims (publication 60297-16, page 1-3):
Granted, that sounds like marketing BS, but my experience is that I actually can fly LOP-WOT smoothly in my PA-28-161 burning around 7.5 GPH instead of 10.0 GPH at 75% power, following the instructions from the 1982 Piper Warrior II POH (P/N 761 780, page 4-21):
This approach wouldn't work for a constant-speed prop, but for anyone else with a carbureted 4-banger and a fixed-pitch prop, you might want to give this a try.
