Engine Type: 2 cylinder, opposed 4 stroke Glow ignition wet sump w/pressure lubrication. ringed ( 2 compression, 1 oil) Bore: 1.100 in. Stroke: 1.100 in. Displacement: 2.091 ci. (34.26 cc.) Compression Ratio: 8.1:1 Max. Operating speed: 8500 RPM (under load 18x6 Master Airscrew) Weight Dry: 5 lb, 4 oz.Home