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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 .
Overhead valve engine: A single camshaft remains in the block below the cylinder(s), however the valves are located in the cylinder head above the combustion chamber. Overhead camshaft engine: Both the valves and one or more camshafts are located in the cylinder head above the cylinders or cylinder banks.
A height gauge is a measuring device used for determining the height of objects, and for marking of items to be worked on. [ 1 ] These measuring tools are used in metalworking or metrology to either set or measure vertical distances; [ citation needed ] the pointer is sharpened to allow it to act as a scriber and assist in marking out work pieces.
The Crossflow featured a change in combustion chamber design, using a Heron type combustion chamber in the top of the piston rather than in the head. The head itself was flat with each engine capacity (1.1 and 1.3 L (1,098 and 1,298 cc)) featuring different pistons with different sized bowls in 681F and 711M blocks.
In a piston engine, the cylinder head sits above the cylinders, [1] forming the roof of the combustion chamber. In sidevalve engines the head is a simple plate of metal containing the spark plugs and possibly heat dissipation fins .
A valve lifter in an internal combustion engine is situated between the camshaft and each valve. A solid valve lifter is just that, in effect a metal spacer to transmit force and motion from the camshaft to the valvetrain). A hydraulic valve lifter is a hollow steel cylinder encasing an internal piston.
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The first engine in the 335 series was introduced in late 1969 as the 351C. The 400 cu in appeared in the third quarter of 1970, which raised deck height from 9.206 in (234 mm) and tall deck 10.297 in (262 mm) to accommodate a longer stroke, and used larger main bearings for additional strength. [4]