New STC IO-390A1A6 210HP

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.

New STC IO-390A1A6 210HP Now FAA APPROVED STC SA02343AK FOR CESSNA 175, A, B, C Later Model Cessna 172 Approval Coming Soon!

The New IO-390 A3A6 210 HP Lycoming Engine has now been installed on my '58 Cessna 175. Installation is the same as the IO-360 200 HP. All PMA/FAA approved parts for the IO-360 will be used for the IO-390.

The IO-390 comes with Roller Tappets and Cam and Counter Weighted Crankshaft. This engine runs really Smooth. Have 125 hrs of flight time on the installation with Wheels, Floats, Skis it's showing about 5mph faster on 9.2 gph fuel burn. I'm using the HC-C2YR-1BF/F8477-4 Hartzell Prop. Cruise speed on wheels (600 x 6) at 6500 AGL at 65% power is 155 TAS. As you can see below at 65% Cruise power fuel comsumption is LESS! than the IO-360 200hp.

TC E00006NY IO-390 A1A6, A3A6
Rated Maximum Continuous HP @ RPM & BSFC           210 @ 2700 & .50
Performance Cruise (75% Rated)                                      158 @ 2450
Economy Cruise      (65% Rated)                                      137 @ 2350
Fuel Consumption, gph @ 75% Rated                               12.5 (IO-360 = 12.3)
                                         65% Rated                                 9.1 (IO-360 = 9.5)
Bore, Inches                                                                      5.319 (IO-360 = 5.125)
Stroke, Inches                                                                   4.375 (IO-360 = 4.375)
Displacement, Cubic Inches                                               389
Compression Ratio                                                            8.9:1 (IO-360 = 8.7:1)
Weight, Lbs.                                                                      315
Dimensions, Inches : Height                                               19.35 (IO-360 = 19.35)
                                Width                                                34.25 (IO-360 = 34.25)
                                Length                                               30.70 (IO-360 = 31.33)
Oil Sump Capacity, Qts                                                     8
Fuel, Aviation Grade, Octane                                             100 or 100LL
Fuel Injector, Precision Airmotive                                       RSA-5AD1
Fuel Pump, Diaphragm Type                                              Standand

                                            STC SA02343AK

                                   CESSNA MODELS 175, A, B, C

                                        Hartzell Testing 84" Propeller

                          CESSNA 172 MODELS B Thru S Coming Soon.

        For Video go to youtube search Cessna 175, look for IO-390 Taildragger Run-up

1956 - 1959 Cessna 172 Owners! Are you interested in putting your plane on floats? Stoots Aviation is working on an STC for the Installation of floats on the Cessna 172 model 1956 thru 1959. STC will include all airframe parts and instructions and approval. If you would like to have floats please contact me by e-mail or phone and let me know.

                            Cessna 172 models B thru S Needed for IO-390A3A6 210HP Lycoming
                      Owner covers parts cost, Stoots Aviation will offer Large discounts for parts and installation cost.  Late Model Cessna 172 owners call or e-mail me...Dave