Stratus EA 81
The Stratus EA 81 is an American aircraft engine, produced by Stratus 2000 of Corvallis, Oregon for use in homebuilt aircraft. Design and development. The engine is based upon the Subaru EA 81 automotive engine. It is a four-cylinder four-stroke, , liquid-cooled, gasoline engine design, with a belt-type reduction drive with a reduction ratio of 2.2:1. It employs electronic ignition and produces at 5400 rpm. The company seems to have gone out of business about 2008 and production ended.