470 ‒ Series

  • You'll often hear pilots referring to the Continental® O-470 in reverent tones as "old reliable." Powering the majority of Cessna 180 and fixed-gear 182 aircraft from 1953 through 1986, this workhorse of an engine embodies simplicity, efficiency and ruggedness. Its track record speaks louder than words. It's a true brawny power plant. In fact, some versions make full power at a smooth, quiet 2400 rpm. Ranging in output from 225 to 260 horsepower, the 470 engines come equipped with either a very reliable carburetor or Continental's extremely efficient continuous-flow fuel injection system. Confidence among pilots can be hard to achieve, but if there was an award for one of the most trusted aircraft engines in the sky, the 400 series would win hands down. Just ask anyone.

    Continental Motors 400 Series Engine

    The 400 Series is a family of 6-cylinder, air-cooled, horizontally opposed, direct-drive aircraft engines with hydraulic lifters, 2 pushrod-actuated valves per cylinder, oil sump and fuel injection or carburetor with manual mixture control.


    Certified Fuels

    80/87, 91/96, 100/100LL AvGas

    Displacement

    7722 cm³471 in³

    Power

    168 to 194 kW225 to 260 HP

    Maximum Rated RPM

    2400 to 2625 r/min2400 to 2625 rpm

    Bore

    127.0 mm5.00 in

    Stroke

    101.6 mm4.00 in

    Compression Ratio

    7.0:1 to 8.6:1

    Height

    501.7 to 721.9 mm19.75 to 28.42 in

    Width

    846.2 to 852.9 mm33.32 to 33.58 in

    Length

    915.2 to 1197.9 mm36.03 to 47.16 in

    Typical Weight

    186 to 208 kg410 to 453 lbs

    Time Between Overhaul

    1900 to 2400 * hrs

     

    * Most engine models manufactured after February 2012 have a TBO increase of 200 hours. Engines used in frequent type service have an additional 200 hour increase. See Service Information Letter SIL98-9B for details.

    Continental® 470 Series Details

    Model # CYL Rated Power1 Bore x Stroke Displacement Typical Weight2 Certified Fuel Grade Compression Ratio Time Between Overhaul (TBO)3  FAA
    TCDS
    O-470-J 6 168 kW @ 2550 127.0 x 101.6 mm 7722 cm³ 186 kg 80/87 7.0:1 Up to 1900 hrs or
    12 years
    E-273
    225 HP @ 2550 5.00 x 4.00 in 471 in³ 410 lbs
    O-470-K, L  6 172 kW @ 2600 127.0 x 101.6 mm 7722 cm³ 192 kg 80/87 7.0:1 Up to 1900 hrs or
    12 years
    E-273
    230 HP @ 2600 5.00 x 4.00 in 471 in³ 424 lbs
    O-470-M 6 179 kW @ 2600 127.0 x 101.6 mm 7722 cm³ 197 kg 91/96 7.0:1 Up to 1900 hrs or
    12 years
    E-273
    240 HP @ 2600 5.00 x 4.00 in 471 in³ 435 lbs
    O-470-R, S 6 172 kW @ 2600 127.0 x 101.6 mm 7722 cm³ 193 kg 80/87 7.0:1 Up to 1900 hrs or
    12 years
    E-273
    230 HP @ 2600 5.00 x 4.00 in 471 in³ 426 lbs
    IO-470-U 6 172 kW @ 2400 127.0 x 101.6 mm 7722 cm³ 194 kg 100/100LL 8.6:1 Up to 2400 hrs or
    12 years
    E-273
    230 HP @ 2400 5.00 x 4.00 in 471 in³ 427 lbs
    IO-470-C 6 186 kW @ 2600 127.0 x 101.6 mm 7722 cm³ 194 kg 91/96 8.0:1 Up to 1900 hrs or
    12 years
    E-273
    250 HP @ 2600 5.00 x 4.00 in 471 in³ 427 lbs
    IO-470-D, F 6 194 kW @ 2625 127.0 x 101.6 mm 7722 cm³ 208 kg 100/100LL 8.6:1 Up to 1900 hrs or
    12 years
    3E1
    260 HP @ 2625 5.00 x 4.00 in 471 in³ 458 lbs
    IO-470-E, L, S 6 194 kW @ 2625 127.0 x 101.6 mm 7722 cm³ 205 kg 100/100LL 8.6:1 Up to 1900 hrs or
    12 years
    3E1
    260 HP @ 2625 5.00 x 4.00 in 471 in³ 451 lbs
    IO-470-J, K 6 168 kW @ 2600 127.0 x 101.6 mm 7722 cm³ 195 kg 80/87 7.0:1 Up to 1900 hrs or
    12 years
    3E1
    225 HP @ 2600 5.00 x 4.00 in 471 in³ 430 lbs
    IO-470-M 6 194 kW @ 2625 127.0 x 101.6 mm 7722 cm³ 206 kg 100/100LL 8.6:1 Up to 1900 hrs or
    12 years
    3E1
    260 HP @ 2625 5.00 x 4.00 in 471 in³ 454 lbs
    IO-470-H, N 6 194 kW @ 2625 127.0 x 101.6 mm 7722 cm³ 207 kg 100/100LL 8.6:1 Up to 1900 hrs or
    12 years
    3E1
    260 HP @ 2625 5.00 x 4.00 in 471 in³ 456 lbs
    IO-470-U, V, VO 6 194 kW @ 2625 127.0 x 101.6 mm 7722 cm³ 207 kg 100/100LL 8.6:1 Up to 1900 hrs or
    12 years
    3E1
    260 HP @ 2625 5.00 x 4.00 in 471 in³ 457 lbs

    1. Engine rated power at sea level standard day inlet conditions (29.92 in Hg, 59°F, 0 water vapor) with maximum allowable cylinder head and oil temperatures with full rich (maximum) fuel flow. 

    2. Typical engine weight including all accessories. 

    3. See Maintenance Manual M-0 for details and applicability.




USA
Latin America
 
Europe
Asia