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  2. Yamaha Genesis engine - Wikipedia

    en.wikipedia.org/wiki/Yamaha_Genesis_engine

    "Cutaway of Yamaha Genesis inline-four 20-valve engine" The DOHC Genesis engine has five valves per cylinder and downdraft carburetors. Yamaha adopted the 5-valve concept, using three intake valves and two exhaust valves per cylinder, because it allowed both excellent volumetric efficiency and high RPM. As designers began to appreciate the ...

  3. Toyota GZ engine - Wikipedia

    en.wikipedia.org/wiki/Toyota_GZ_engine

    The 1GZ-FE is a 4,996 cc (5.0 L) 48-valve DOHC V12 engine with variable valve timing ().Bore is 81 mm and stroke is 80.8 mm, with a compression ratio of 10.5:1. The official power output advertised in Japan per the gentlemen's agreement is 206 kW (276 hp; 280 PS) at 5,200 rpm, though it was advertised as 220 kW (295 hp; 299 PS) in export markets.

  4. Yamaha FZ750 - Wikipedia

    en.wikipedia.org/wiki/Yamaha_FZ750

    The Yamaha FZ750 is a sports motorcycle produced by Yamaha Motor Corporation between 1985 and 1991. The FZ750 is notable for several reasons, perhaps the most radical being the 5-valve cylinder head.

  5. 5 Car Brands With the Most Reliable Engines - AOL

    www.aol.com/5-car-brands-most-reliable-170022334...

    The 5.7-liter LT1 engine powered Corvettes and Camaros with plenty of horsepower during the 1990s and the new Gen V engines are moving Chevrolet up J.D. Power’s dependability rankings yearly.

  6. Multi-valve - Wikipedia

    en.wikipedia.org/wiki/Multi-valve

    The GM Quad 4 multi-valve engine family debuted early 1987. The Quad 4 was the first mainstream multi-valve engine to be produced by GM after the Chevrolet Cosworth Vega. The NA Quad 4 achieved 1.08 bhp (1 kW; 1 PS) per cubic inch (49.1 kW/liter). [2] [20] Such engines soon became common as Japanese manufacturers adopted the multi-valve concept.

  7. What Ever Happened to Five-Valve Cylinder Heads? - AOL

    www.aol.com/finance/ever-happened-five-valve...

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  8. Ward's 10 Best Engines - Wikipedia

    en.wikipedia.org/wiki/Ward's_10_Best_Engines

    Wards 10 Best Engines is an annual list of the ten "best" automobile engines available in the U.S. market, that are selected by Wards AutoWorld magazine. The list was started in 1994 for model year 1995, and has been drawn every year since then, published at the end of the preceding year.

  9. Five-stroke engine - Wikipedia

    en.wikipedia.org/wiki/Five-stroke_engine

    In 1879, Nicolaus Otto built a 5-stroke engine which was commercially produced, but suffered from poor performance. [2] Two Spanish patents (ES0156621, F Jimeno-Cataneo, 1942; and ES0433850, C Ubierna-Laciana, 1975) describe 5-stroke engines identical to that of Schmitz's design, this engine had a fellowship to Burgundy University to be studied.