the rear passenger seat with the cylinders oriented horizontally. Porsche investigated using the Project EA266 chassis as the basis for a mid-engined replacement for the Porsche 911 called the "Typ 1966". As part of the Typ 1966 development process, a prototype water-cooled flat-eight engine was built. However, Project EA266 was cancelled by Volkswagen, all materials relating to the Typ 1966 were destroyed, including the prototype flat-eight engine. Use in aircraft Several flat-eight aircraft engines have been produced over the years: 1948-1961 Lycoming GSO-580 Air-cooled, 9.47 L (578 cu in) 1961-present Lycoming IO-720. Air-cooled, 1969-1975 Continental Tiara 8-380 (O-540) and T8-450 (O-540). Air-cooled, 1997-200? Jabiru 5100. Air-cooled, 2013-???? Engineered Propulsion Systems Vision 350. Turbo-diesel, water-cooled, Use in marine vessels Flat-eight engines are seldom used in marine applications, with the 1957 Fageol VIP 88 outboard engine being a rare example of a production engine. The VIP 88 consisted of two Crosley engine blocks joined on a common crankshaft. Another marine engine was the one-off Miller 148 marine engine which was built in 1928 and used in the racing boat Miss Rioco III. The Miller 148 had dual overhead camshafts and a displacement of . See also Straight-eight engine V8 engine W8 engine References Flat-08 08