Stoots Aviation was established in 1979 in Fairbanks, Alaska. STC's for High Performance Lycoming Engine Conversions,  
              Hartzell Propeller Installations, Tail Wheel Conversions on Cessna Models  170, 172 and 175 Airframes.
                Best Way to Contact us is Email stoots@gci.net or  907-474-4039 Hangar  907-590-5559 Cell
Cessna 170 / 172
STC Approved!! SA02282AK New installation of the IO-360M1A, B 180hp Lycoming engine on the Cessna 170A, B and C-172, A thru H models with the New Superior Cold Air Induction Sump and Hartzell Carbon Fiber Trail Blazer Props. Flight test have shown some great numbers. Take off at Gross Weight 2200 lbs is under 5 seconds, Less than 500 ft. Climb out at GW is over 1200 fpm. Cruise speed at GW @ 6000 ft msl 24" manifold and 2400 RPM 150 mph plus and burning 8.5 gph.              
STC Kit Parts Package Available Now!

I use the IO-360M1A & B 180hp Lycoming engine. It uses the same sump as the 200hp model but has the lighter parallel cylinders but still is 360 cu in. The M1B puts out close to 190 hp because of the cold air induction sump and is 30lbs lighter than the IO-360A1A 200hp. The M1B is a new certified engine from Lycoming in 2002 and comes under new FAA rules that state that the engine has to put out 5% greater hp than published so it can maintain the rated hp thru it’s 2000 hr TBO. So it’s published hp is 180 but on the dyno it shows about 190hp. This is the best power to weight ratio on the market.

Also the M1B fits the C-170B cowl better than the larger angle valve cylinders. The M1B is lighter, burns over 1.0 gph less and has about 10 plus more hp than the O-360A1A 180hp Lycoming engine and no carb ice.

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