500 ‒ Series

  • What do you say about an engine family that ranges in power from 285 hp all the way to 375 hp? Innovative? Versatile? Amazing? How about all of the above? Continental Motors introduced the first 500 series engine to the world in the Beech Bonanza and the Cessna Centurion in 1964. The 500 series includes both 520 and 550 cubic-inch models in either naturally aspirated or turbocharged configurations. There is even a geared variant that exceeds horsepower-to-displacement standards - a stunning 375 hp from 520 cubic inches. With the right combination of thrust and efficiency, our 500-series engines have powered some of the most successful aircraft in general aviation history.

    Continental Motors 500 Series Engine

    The 500 Series is a family of 6-cylinder, air-cooled, horizontally opposed, direct-drive aircraft engines with hydraulic lifters, 2 pushrod-actuated valves per cylinder, wet oil sump and fuel injection or carburetor with manual mixture control. Geared, turbocharged, liquid-cooled or FADEC models are available.


    Certified fuels

    100/100LL and 100/130 avgas

    Displacement

    8521/9013 cm³520/550 cu.in

    Power

    209 to 261kW, 280 kW geared280 to 350 hp, 375 hp geared

    Maximum Rated RPM

    2400 to 2850 r/min, 3400 r/min geared2400 to 2850 rpm, 3400 rpm geared

    Bore

    133.4 mm5.25 in

    Stroke

    101.6 mm4.00 in (520)
    107.95 mm4.25 in (550)

    Compression Ratio

    7.5:1 (turbocharged)8.5:1 (naturally aspirated)

    Height

    477 to 1030.22 mm18.78 to 40.56 in

    Width

    845.57 to 1079.5 mm33.29 to 42.5 in

    Length

    933.2 to 1616.2 mm36.74 to 63.63 in

    Dry Weight

    165.5 to 253.1 kg364.8 to 558 lbs

    Time Between Overhaul

    Currently 1400 to 2400 * hrs

    Turbo Model Availability

    Yes

    Geared Driven Model Availabiliy

    Yes

    * 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.

    520 Series Details

    Model Cylinders METO Power @RPM
    (Take off @ RPM)
    Bore x Stroke Displacement Dry Weight
    Basic Engine
    Fuel Grade Compression Ratio Recommended TBO
    IO-520-B, BA, BB 6 212 kW @ 2700 133.4 x 101.6 mm 8521 cm³ 184.1 kg 100/100LL 8.5:1 1700 hrs or
    12 years
    285 hp @ 2700 5.25 x 4.00 in 520 cu.in 406 lbs
    IO-520-C, CB 6 212 kW @ 2700 133.4 x 101.6 mm 8521 cm³ 181 kg 100/100LL 8.5:1 1700 hrs or
    12 years
    285 hp @ 2700 5.25 x 4.00 in 520 cu.in 399 lbs
    IO-520-D & E 6 212 kW @ 2700 133.4 x 101.6 mm 8521 cm³ 186.4 kg 100/100LL 8.5:1 1700 hrs or
    12 years
    285 hp @ 2700 5.25 x 4.00 in 520 cu.in 411 lbs
    IO-520-F 6 212 kW @ 2700 (224 @ 2850) 133.4 x 101.6 mm 8521 cm³ 186.4 kg 100/130 8.5:1 1700 hrs or
    12 years
    285 hp @ 2700 (300 @ 2850) 5.25 x 4.00 in 520 cu.in 411 lbs
    IO-520-L 6 212 kW @ 2700 (224 @ 2850) 133.4 x 101.6 mm 8521 cm³ 187.3 kg 100/130 8.5:1 1700 hrs or
    12 years
    285 hp @ 2700 (300 @ 2850) 5.25 x 4.00 in 520 cu.in 413 lbs
    IO-520-M, MB 6 212 kW @ 2700 (224 @ 2850) 133.4 x 101.6 mm 8521 cm³ 186.4 kg 100/100LL 8.5:1 1700 hrs or
    12 years
    285 hp @ 2700 (300 @ 2850) 5.25 x 4.00 in 520 cu.in 411 lbs
    TSIO-520-B, BB 6 212 kW @ 2700 133.4 x 101.6 mm 8521 cm³ 184.6 kg 100/100LL 7.5:1 1400 hrs or
    12 years
    285 hp @ 2700 5.25 x 4.00 in 520 cu.in 407 lbs
    TSIO-520-C & H 6 212 kW @ 2700 133.4 x 101.6 mm 8521 cm³ 193.2/188.2 kg 100/130 7.5:1 1400 hrs or
    12 years
    285 hp @ 2700 5.25 x 4.00 in 520 cu.in 426/415 lbs
    TSIO-520-E, EB 6 224 kW @ 2700 133.4 x 101.6 mm 8521 cm³ 183.7 kg 100/100LL 7.5:1 1400 hrs or
    12 years
    300 hp @ 2700 5.25 x 4.00 in 520 cu.in 405 lbs
    TSIO-520-J, JB, N, NB 6 231 kW @ 2700 133.4 x 101.6 mm 8521 cm³ 179.1/183.3 kg 100/130 7.5:1 1400 hrs or
    12 years
    310 hp @ 2700 5.25 x 4.00 in 520 cu.in 395/404 lbs
    TSIO-520-(M) P & R 6 212 kW @ 2700 133.4 x 101.6 mm 8521 cm³ 189.1 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    285 hp @ 2700 5.25 x 4.00 in 520 cu.in 417 lbs
    TSIO-520-T 6 231 kW @ 2700 133.4 x 101.6 mm 8521 cm³ 193.2 kg 100/100LL 7.5:1 1400 hrs or
    12 years
    310 hp @ 2700 5.25 x 4.00 in 520 cu.in 426 lbs
    TSIO-520-U & UB 6 224 kW @ 2700 (231 @ 2700) 133.4 x 101.6 mm 8521 cm³ 191.4 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    300 hp @ 2700 (310 @ 2700) 5.25 x 4.00 in 520 cu.in 422 lbs
    TSIO-520-VB 6 242 kW @ 2700 133.4 x 101.6 mm 8521 cm³ 184.2 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    325 hp @ 2700 5.25 x 4.00 in 520 cu.in 406 lbs
    TSIO-520-WB 6 242 kW @ 2700 133.4 x 101.6 mm 8521 cm³ 188.7 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    325 hp @ 2700 5.25 x 4.00 in 520 cu.in 416 lbs
    GTSIO-520-D & H 6 280 kW @ 3400 133.4 x 101.6 mm 8521 cm³ 219.5 kg 100/130 7.5:1 1600 hrs or
    12 years
    375 hp @ 3400 5.25 x 4.00 in 520 cu.in 484 lbs
    GTSIO-520-L 6 280 @ 3350 133.4 x 101.6 mm 8521 cm³ 219.9 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    375 @ 3350 5.25 x 4.00 in 520 cu.in 485 lbs
    GTSIO-520-M 6 280 kW @ 3350 133.4 x 101.6 mm 8521 cm³ 219.1 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    375 hp @ 3350 5.25 x 4.00 in 520 cu.in 483 lbs

    550 Series Details

    Model Cylinders METO Power @RPM
    (Take off @ RPM)
    Bore x Stroke Displacement Dry Weight
    Basic Engine
    Fuel Grade Compression Ratio Recommended TBO
    IO-550-A 6 224 kW @ 2700 133.4 x 107.95 mm 9013 cm³ 187.8 kg 100/100LL 8.5:1 1700 hrs or
    12 years
    300 hp @ 2700 5.25 x 4.25 in 550 cu.in 414 lbs
    IO-550-B 6 224 kW @ 2700 133.4 x 107.95 mm 9013 cm³ 184.2 kg 100/100LL 8.5:1 1700 hrs or
    12 years
    300 hp @ 2700 5.25 x 4.25 in 550 cu.in 406 lbs
    IO-550-C 6 224 kW @ 2700 133.4 x 107.95 mm 9013 cm³ 188.2 kg 100/100LL 8.5:1 1700 hrs or
    12 years
    300 hp @ 2700 5.25 x 4.25 in 550 cu.in 415 lbs
    IO-550-D, E, F, L 6 224 kW @ 2700 133.4 x 107.95 mm 9013 cm³ 192.8 kg 100/100LL 8.5:1 1700 hrs or
    12 years
    300 hp @ 2700 5.25 x 4.25 in 550 cu.in 425 lbs
    IO-550-G 6 209 kW @ 2500 133.4 x 107.95 mm 9013 cm³ 186.8 kg 100/100LL 8.5:1 2200 hrs or
    12 years
    280 hp @ 2500 5.25 x 4.25 in 550 cu.in 412 lbs
    IO/IOF-550-N, P, R 6 231 kW @ 2700 133.4 x 107.95 mm 9013 cm³ 186.8 kg 100/100LL 8.5:1 2200 hrs or
    12 years
    310 hp @ 2700 5.25 x 4.25 in 550 cu.in 412 lbs
    TSIO-550-B & E 6 261 kW @ 2700 133.4 x 107.95 mm 9013 cm³ 200.5 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    350 hp @ 2700 5.25 x 4.25 in 550 cu.in 442 lbs
    TSIO-550-C 6 231 kW @ 2600 133.4 x 107.95 mm 9013 cm³ 200.5 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    310 hp @ 2600 5.25 x 4.25 in 550 cu.in 442 lbs
    TSIOL-550-A 6 261 kW @ 2700 133.4 x 107.95 mm 9013 cm³ 181.9 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    350 hp @ 2700 5.25 x 4.25 in 550 cu.in 401 lbs
    TSIOL-550-B 6 224 kW @ 2500 133.4 x 107.95 mm 9013 cm³ 197.8 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    300 hp @ 2500 5.25 x 4.25 in 550 cu.in 436 bs
    TSIOL-550-C 6 261 kW @ 2600 133.4 x 107.95 mm 9013 cm³ 188.2 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    350 hp @ 2600 5.25 x 4.25 in 550 cu.in 415 lbs
    TSIO-550-G 6 231 kW @ 2700 133.4 x 107.95 mm 9013 cm³ 251.3 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    310 hp @ 2700 5.25 x 4.25 in 550 cu.in 554 lbs
    TSIOF-550-D, J 6 261 kW @ 2600 133.4 x 107.95 mm 9013 cm³ 253.1 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    350 hp @ 2600 5.25 x 4.25 in 550 cu.in 558 lbs
    TSIOF-550-K 6 235 kW @ 2500 133.4 x 107.95 mm 9013 cm³ 243.6 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    315 hp @ 2500 5.25 x 4.25 in 550 cu.in 537 lbs
    TSIO-550-K, N 6 235 kW @ 2500 133.4 x 107.95 mm 9013 cm³ 236.8 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    315 hp @ 2500 5.25 x 4.25 in 550 cu.in 522 lbs