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It has a 749 cc (45.7 cu in), DOHC 20-valve (5 valves per cylinder) inline-four engine producing 79 kW (106 hp). [1] Yamaha also produced two race kits for the R7, topping 101 kW (135 hp) when the other, unused bank of fuel injectors is activated. A pipe and ECU update were also made. [4] [2]
A transverse engine is an engine mounted in a vehicle so that the engine's crankshaft axis is perpendicular to the direction of travel. In a longitudinal engine configuration, the engine's crankshaft axis is parallel with the direction of travel. However, the description of the orientation of "V" and "flat" motorcycle engines differs from this ...
A straight-four engine (also referred to as an inline-four engine) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. The majority of automotive four-cylinder engines use a straight-four layout [1]: pp. 13–16 (with the exceptions of the flat-four engines produced by Subaru and Porsche) [2] and ...
"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 ...
Yamaha F1 engine; Ford SHO V8 engine; K. Yamaha KT100; O. Yamaha OX66 engine; Yamaha OX77 engine; T. Toyota LR engine; V. Volvo B8444S engine This page was last ...
Mazda has revealed that it's working on a new four-cylinder engine called Skyactiv-Z. The new engine is set to replace the Skyactiv-G versions in the United States, and it will launch in 2027.