The initial engine was the Wright R Cyclone This engine had 9 cylinders in 2 rows, for a total of 18 cylinders The engine was aircooled and had an unfortunate tendency to catch fire (At every engine start, a ground crewman stood by with aList of aircraft accidents in the ASN database involving aircraft fitted with the Wright R3350 engine Aircraft types in the ASN database fitted with the Wright R3350 engineThe Wright R3350 Turbo Compound is an aircooled, doublerow, 18cylinder, static radial aircraft engine displacing 3,350 in³ Turbo Compounds could produce up to 3,700 takeoff horsepower when using fuels available during the zenith of their service history Cruise fuel consumption could be as low as 040 lb/hp/hr
Wright R 3350 Turbo Compound In Lockheed Ec 121 Warning St Flickr