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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 ...
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 ...
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.
Fiat 875 cc two cylinder TwinAir engine featuring Multiair technology. MultiAir or Multiair is a hydraulically-actuated variable valve timing (VVT) and variable valve lift (VVL) engine technology enabling "cylinder by cylinder, stroke by stroke" [1] control of intake air directly via a gasoline engine's inlet valves.
The Hyundai Alpha series is a multi-valve gasoline inline four-cylinder engine family comprising 1.3, 1.4, 1.5, and 1.6 L naturally aspirated versions and a 1.5 L turbocharged version. Introduced in 1992, this was Hyundai's first engine designed entirely in-house and was the first indigenous South Korean engine design.
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In a multivalve engine, maximum RPM is limited by the size of the largest valves: in a 3-valver, the exhaust valve is larger, and in a 4-valver, the inlet valves are larger. The significance of the five-valve engine compared to other multivalve configurations engines is that, like a 3-valver, there were more intake valves than exhaust valves ...
This 240-volt compact garage heater is the best all-around choice for most spaces, with 7,500 watts of heating power and the option to mount it on the wall or ceiling.