The Wright R-2160 Tornado was an experimental 42-cylinder, 7-cylinder per row, 6-row liquid-cooled inline radial aircraft engine. It was proposed in 1940 with 2,350 hp (1,752 kW) for experimental aircraft such as the Lockheed XP-58 Chain Lightning, Vultee XP-68 Tornado, and the Republic XP-69. Specifications See also References Kim McCutcheon, Tornado: Wright Aero's Last Liquid-cooled Piston Engine External links Republic XP-69 Technical Drawings & CAD Renders Specifications & Picture 42-cylinder engines Wright aircraft engines 1940s aircraft piston engines Inline radial engines Abandoned military aircraft engine projects of the United States Water-cooled radial engines