Wolseley Viper
The Wolseley Viper is a British-built, high-compression derivative of the Hispano Suiza HS-8 liquid-cooled V8 engine, built under licence by Wolseley Motors during World War I. It powered later models of the S.E.5a, SPAD VII and other British or British-built aircraft designed for the Hispano-Suiza. == Variants == Wolseley W.4A Python I (1917)150 hp (110 kW) – licence produced version of the Hispano-Suiza 8Aa with minor structural changes and the weight increased to 455 lb (206 kg), retained the original's low compression 1.8 in (45 mm) pistons and compression ratio of 4.7:1.