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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. Oldsmobile straight-6 engine - Wikipedia

   en.wikipedia.org/wiki/Oldsmobile_Straight-6_engine

   Oldsmobile produced a straight-6 automobile engine from 1923 to 1950. It was a conventional side-valve engine of varying capacities and at stages was shared with GMC . Although the engines changed from year to year there were basically 5 series of Oldsmobile side-valve 6 cylinder engines over the 27 years of production, 1923 to 1927, 1928 to ...

4. Pierce-Arrow Motor Car Company - Wikipedia

   en.wikipedia.org/wiki/Pierce-Arrow_Motor_Car_Company

   Starting in 1918, Pierce-Arrow adopted a four-valve per cylinder T-head inline-six engine (Dual Valve Six) and three spark plugs per cylinder, one of the few, if only, multi-valve flathead design engines ever made. The company did not introduce an 8-cylinder engine until the 1929 Model 126, and a V-12 engine was offered in 1931 until the ...

5. 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 ...

6. T-head engine - Wikipedia

   en.wikipedia.org/wiki/T-head_engine

   The White Company engine was a mono block design. The Pierce-Arrow company introduced a production four-valve per cylinder T-head motor (Dual Valve Six) in 1918, one of the few, perhaps the only, multi-valve valve-in-block type engines produced. American LaFrance produced T-head engines for their fire engines until the 1950s.

7. 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