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All Rover V8s were OHV pushrod engines with two valves per cylinder. It used a sand-cast block with pressed-in iron cylinder liners, and a new intake manifold with two HS6 type SU Carburettors. The Rover engine was heavier but stronger than the Buick engine, with a dry weight of about 170 kg (370 lb).
The Mercedes-Benz OM364 is a 4.0 liter (3,972cc) Inline-four engine (I4) Overhead valve (OHV) diesel engine with 2 valves per cylinder. [1] It is related to the Straight-six engine OM366 engine which has two extra cylinders, while the bore and stroke remain unchanged.
This engine was redesigned as an OHV for the 1956 model year, [3] but the flathead version reemerged in 1958 as the economy engine for the "new" Rambler American and remained available through 1965. [3] American Motors introduced a die-cast aluminum block version of the OHV 195.6 cu in (3.2 L) engine in 1961 and produced it through 1964. [4]
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 Northstar engine is a family of high-performance 90° V engines produced by General Motors between 1993 and 2011. Regarded as GM's most technically complex engine, the original double overhead cam, four valve per cylinder, aluminum block/aluminum head V8 design was developed by Oldsmobile R&D, [citation needed] but is most associated with Cadillac's Northstar series.
The upper part of the valve stem, within the rocker box, is lubricated by oil. If this oil travels unchecked along the valve stem, engine HC emissions will become excessive. To control this, an elastomeric seal is fitted over the top of the valve guide. These may wear or stiffen with age, so are usually replaced whenever valves are removed for ...