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The 1953 Eight was a completely new car with unit construction and an overhead-valve engine.
The Ten continued after the war, with a redesign in 1923 including a new overhead-valve engine.
Their basic overhead-valve engine design is still in use today, offering high reliability and widespread parts availability.
Naturally, the overhead-valve engines will be the faster.
Chevrolet referred to its overhead-valve engine as a "valve-in-head" design.
The car initially came with a side-valve engine but was later improved to an overhead-valve engine.
This design had the camshaft above the crankshaft, as in the later pushrod operated overhead-valve engine.
It was powered by a 1,089 cc four-cylinder overhead-valve engine rather than the earlier Balilla's 1-litre unit.
After World War I, Grégoire introduced its first car with an overhead-valve engine.
In 1932 Stuart produced the model K 4-stroke engine, which was a single-cylinder overhead-valve engine designed to power refrigeration units.
The M1S (or "Super") uses an overhead-valve engine, 12V electrical system, electric starter and reverse gear.
The mighty 7,668cc six-cylinder, twin-plug overhead-valve engine is as big as a chaise longue and reputedly tuned to produce about 100bhp.
The 100 hp engine was also an overhead-valve engine in the sense that the port opened directly into the cylinder head, though the valves were mounted horizontally.
Together with Walter Marr and Eugene Richard, Buick developed the overhead-valve engine, which set his early autos apart from their competitors.
The type T introduced steel cylinders and was an overhead-valve engine with vertically mounted valves operated from a central camshaft by thin pull rods and rockers.
The three horizontally opposed, four-cylinder, overhead-valve engines that appeared at aircraft shows between October 1909-10 were E.N.V.'s only departure from their standard 90 V8 layout.
The first production car, the 1925 2 litre used a Meadows straight six, overhead-valve engine and four-speed gearbox in a chassis with semi elliptical springs all round cost from £595.
All except the Cosworth 24v derivative and later 4.0 litre SOHC engines were pushrod overhead-valve engines, with a single camshaft between the banks.
Major technological innovations were introduced or were widely adopted during the 1930s, such as synchromesh manual transmissions, semi-automatic transmissions, automatic transmissions, hydraulic brakes, independent front suspension, and overhead-valve engines.
A 1-ton capacity light truck sharing its 3.5-litre six-cylinder overhead-valve engine with the company's luxury cars (albeit with lowered compression ratio and reduced power output) made its debut at the 1949 Paris Motor Show.
In the lead up to World War II Brough Superior began using 990 cc Matchless V-twin side valve engines for their SS80 and overhead-valve engines for the SS100.
Austin's marine engine of 1910 produced 300 bhp and was installed in a speedboat called "Irene I"; its all aluminium twin overhead-valve engine had twin magneto, twin carburettor and desmodromic valves.
The new inline six-cylinder overhead-valve engine produced between 140 and 160 brake horsepower, depending on whether a single Solex or triple Solex carburettors were fitted, and the standard compression ratio was a modest 6.8:1.
In addition to being bigger, it had single panoramic forward and rear windscreens, a larger four-cylinder overhead-valve engine, central lubrication system of the main chassis elements, hypoid rear axle and an automatic hydromechanical gearbox.
Sawchuk also advises using a gas mower with an overhead-valve engine, sharpening your mower blades at least three times a year and buying a fuel stabilizer to keep the gas in the tank fresh for up to two years.