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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 .
Pushrods are long, slender metal rods that are used in overhead valve engines to transfer motion from the camshaft (located in the engine block) to the valves (located in the cylinder head). The bottom end of a pushrod is fitted with a lifter, upon which the camshaft makes contact. The camshaft lobe moves the lifter upwards, which moves the ...
Volvo B18 engine. The B18 is a 1.8 L overhead valve (OHV) engine with two valves per cylinder. It has five main bearings, two more than the B16. With a bore of 84.14 mm (3.31 in) and stroke of 80 mm (3.15 in), the B18 displaces 1,778 cc (108.5 cu in). The cylinders are on 105 / 108 mm (4.13 / 4.25 in) split bore centers, where the spacing ...
Torque - Generally pushrod engines create more torque at a given displacement; Reliability - Pushrod motors can be the most reliable engines. (i.e. Chevy Smallblock, GM 3800 V6) The valve actuation system has nothing to do with torque production, torque is not an advantage.
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).
Its straightforward design and Toyota’s reliable engineering have made it a top pick for both everyday use and heavy-duty towing. Discover More: 9 Best and Affordable Cars for High Mileage ...
The Nissan H series of automobile engines is an evolution of the Nissan "R" engine which was based on the 1.5-liter, three-main bearing "G" engine used in the 1960s. Both inline-four and inline-six versions were produced. It is a pushrod OHV design with iron block, early models with an iron head, later models with aluminum head.
You can argue that tires are a car's foremost important safety and performance feature, but all the basic components are equally critical. If one fails, the vehicle becomes unusable and costs you...