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2. Multi-valve - Wikipedia

   en.wikipedia.org/wiki/Multi-valve

   The 16-valve 1.8-liter straight-4 produced 139 PS (102 kW; 137 bhp) or 56.7 kW/liter, almost 25% up from the 45.6 kW/liter for the previous 8-valve Golf GTI engine. 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 ...

3. Stuart Turner (company) - Wikipedia

   en.wikipedia.org/wiki/Stuart_Turner_(company)

   Bore and stroke were 0.75 inches. While the slide valve variant was only available as a kit, the piston valve version was available as a complete engine or kit. The Sun continued after the war as a piston valve kit only and last appeared in the Stuart Turner catalogue in 1989/1990. Sirius

4. Stutz Motor Car Company - Wikipedia

   en.wikipedia.org/wiki/Stutz_Motor_Car_Company

   A significant advance was the 1931 DOHC 32-valve in-line 8 called the "DV32" (DV for 'dual valve'). This was during the so-called "cylinders race" of the early 1930s when makers of some expensive cars were rushing to produce multi-cylinder engines. However, Stutz continued its performance heritage with the dual overhead cam, in-line 8 engine ...

5. Weslake V12 engine - Wikipedia

   en.wikipedia.org/wiki/Weslake_V12_engine

   Peter Berthon and Harry Weslake proposed a new V12 engine with four valves per cylinder, while BRM's technical director, Tony Rudd, resisted the idea of a multi-valve engine. BRM compromised by committing to a new H16 engine with two valves per cylinder, while allowing Weslake to pursue their V12 design. Single-cylinder test engines for each ...

6. Lotus 900 series - Wikipedia

   en.wikipedia.org/wiki/Lotus_900_series

   The type 918 is a 3.5-liter DOHC, 4 valves per cylinder V8 engine with a flat-plane crankshaft. Although it carries a 9xx designation it is described as a clean sheet design. [36] The engine had a bore and stroke of 83 mm × 81 mm (3.3 in × 3.2 in) for a total displacement of 3,506 cc (3.5 L; 213.9 cu in). [37]

7. Triumph slant-four engine - Wikipedia

   en.wikipedia.org/wiki/Triumph_slant-four_engine

   The Dolomite Sprint has been described as "the world's first mass-produced multi-valve car". [12] Multi-valve engines had first appeared in 1912, with the most recent prior to the release of the Sprint engine being the Cosworth BDA (1969) and Lotus 907 (1972), but they had not been not used in mass-production vehicles until after the ...