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An overhead valve engine, abbreviated (OHV) and sometimes called a pushrod engine, is a piston engine whose valves are located in the cylinder head above the combustion chamber. This contrasts with flathead (or "sidevalve") engines , where the valves were located below the combustion chamber in the engine block .
The Opel OHV family (also known as the Kadett engine and Viva engine after its most famous applications) is a pushrod inline-four engine. It was the first all-new engine developed by Opel of Germany after World War II and was released in 1962. Versions were in use through 1993.
This engine was also used in some early Toyota Land Cruisers & Hilux, and Opel Fronteras. The 425 OHV used in Chrysler Voyager 1991–2000 only 1996 and 1997 was with chain. Between 1997 and 2001 this engine was manufactured at "Detroit Diesel Motores do Brasil" in Curitiba, Paraná, Brazil.
Mazda's strength since the 1960s has been in its line of Inline-4 engines. Beginning with a tiny 358 cc kei car engine, one of the smallest ever made, Mazda continues to this day to be a leading developer of this type of engine. OHV engine – 358 cc–1.2 L OHV I4 (1961–1974) xC engine – 1.0 L–2.0 L SOHC I4 (1965–1983)
On some OHV engines in the 1960s, such as the Ford Taunus V4 engine and Opel CIH engine, the tappet adjustment was done by setting the height of the rocker pivot point (rather than the typical method of a rocker-end adjustment screw). On the 1965-1970 versions of the Opel CIH engine with solid tappets, the tappet adjustment was conducted with ...
By 1952 Ford had new, 215 cu in (3.5 L) OHV 6-cylinder engine and Lincoln had a 317 cu in (5.2 L) OHV V8. [1] The company had designed the Y-block for a 1953 introduction, but a shortage of nickel due to the Korean War 's needs prevented the company from manufacturing the engine in sufficient quantities, [ 2 ] delaying it until 1954.
1955-1962 — ME7/15/18 — This was Mitsubishi's first air-cooled OHV engine over one liter's displacement. In 1955, the 1276 cc ME7 was developed for the 1.5-tonne (3,310 lb) Mitsubishi TM7 . The 1145 cc ME15 and the 1489 cc ME18 were premiered in 1958 for the TM15/16 and TM17/18 trucks; production of this engine series ended when Mitsubishi ...
The engine's small size was dictated by Japan's kei car rules which offered special status to vehicles with engines displacing less than 360 cc (22 cu in). Mazda's tiny OHV was the only four-cylinder in the class in the 1960s, but was outperformed by 2-stroke and I3 powerplants from other companies.