Lean/rich settings for 180Lycoming

Aircraft powered airboat discussion.
Post Reply
Marshn
Southern Airboat Member
Posts: 13
Joined: Sun Jul 24, 2016 8:32 pm

Lean/rich settings for 180Lycoming

Post by Marshn » Tue Aug 29, 2017 12:40 pm

Hey guys,
I'm running a Lycoming 0360 with an MA 4-5 carb. What should I run the lean/rich lever at? Ive been told to run it full rich to keep the engine cool but also to lean it out to save fuel. Any comments are apreciated. Thanks, Ed

User avatar
SLIDEJOB0520
Southern Airboat Member
Posts: 70
Joined: Tue Dec 02, 2008 4:49 pm
Location: Auburndale ,FL
Contact:

Re: Lean/rich settings for 180Lycoming

Post by SLIDEJOB0520 » Tue Aug 29, 2017 2:13 pm

Personally I would run it full rich without a CHT/EGT gauge to monitor temps.
WHEN IN DOUBT TACH IT OUT!!!!!!!!!

pirate
Site Supporter - V
Site Supporter - V
Posts: 1497
Joined: Tue Jul 26, 2005 1:46 pm
Location: Hernando Fl

Re: Lean/rich settings for 180Lycoming

Post by pirate » Tue Aug 29, 2017 4:12 pm

I would run it full rich here in Florida. The lean rich lever for the most part is to lean the engine at altitude where the air is thinner in order to keep the air/fuel ratio at roughly 14.7 to one. Usually when I shut down I go to full lean and when the engine starts to sputter I kill the mags.
Compromise is failure on the installment plan.

Marshn
Southern Airboat Member
Posts: 13
Joined: Sun Jul 24, 2016 8:32 pm

Re: Lean/rich settings for 180Lycoming

Post by Marshn » Tue Aug 29, 2017 5:35 pm

Thanks much. Will do. :old_glory: :florida: :rebel:

GMAC 76
Site Supporter - V
Site Supporter - V
Posts: 1237
Joined: Sun Jan 04, 2009 11:12 pm
Location: LAKE PLACID FL.... LAKE ISTOKPOGA

Re: Lean/rich settings for 180Lycoming

Post by GMAC 76 » Tue Aug 29, 2017 7:30 pm

these guys are right on....run it at full rich and use it to kill the engine at full lean.....if you lean it out while cruising and all of a sudden need to stab the throttle it will usually stall out and fall flat on her face and that is not a good on an airboat!!!!!

Post Reply

Return to “Aircraft Power Only”