MR HEMI License plate tag embossed metal 426 392 331

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Nice "MR HEMI" license plate 6"X 12" standard size This metal license plate is identical to a AZ DOT issued plate. It should not be used in lieu of the legally issued plate for a vehicle. Will ship promptly via Priority Mail to US addresses. International customers should contact us for a shipping quote. A Chrysler Hemi engine , known by the trademark "Hemi engine", is an internal combustion engine built by Chrysler that utilizes a hemispherical combustion chamber . Chrysler built three generations of hemi engines for automobiles: the first (known as the Chrysler FirePower engine ) in the 1950s, the second from the mid 1960s through the mid 1970s, and the third in the early 2000s.A hemispherical (inverted bowl-shape) combustion chamber allows the valves of a two valve-per-cylinder engine to be angled rather than side-by-side. This design also allows the placement of the sparkplug nearer to the center. This is mandatory, given that t is minimal quench and swirl to burn fuel gasses thoroughly and quickly. A hemispherical combustion chamber often requires a dome-shaped piston crown to maintain the desired compression ratio .The advantages of the hemi cylinder head come at the disadvantage of requiring intake and exhaust valve stems that point in different directions, requiring a much more complex rocker arm geometry in both cam-in-block and overhead cam engines. This also increases the space taken up by the cylinder head--hemi engines are not space-efficient. Also, the hemi design lacks the quench area that exists with wedge combustion chamber designs, making the hemi more sensitive to fuel octane . (A given compression ratio will require higher octane in a hemi engine than a wedged combustion chamber engine.) Contents [hide ] 1 WWII 2 FirePower with the OHV V8 3 Hemi design reintroduced 4 Modern Hemi 4.1 5.7 4.2 6.1 4.3 6.4 5 Hemi-powered cars as collector's items 6 See also 7 External links WWII T were several companies other than Chrysler that used some form of hemi engine with varying degrees of success before WWII, and no doubt this available data proved to be a useful starting point when Chrysler engineers were contracted to design their own for the war effort.Chrysler developed their first experimental Hemi for use in the Republic P-47 fighter aircraft. The XIV-2220 engine was an inverted V16 rated at 2,500 hp (1860 kW). The P-47 was already in production with a Pratt & Whitney radial engine when the XIV-2220 flew successfully in trials in 1945 as a possible upgrade, but the war was winding down and it did not go into production. However, the exercise gave Chrysler engineers valuable research and development experience with two-valve hemi combustion chamber dynamics and parameters.In addition to the aircraft engine, Chrysler and Continental worked together to develop the air-cooled AV-1790-5B V12 Hemi engine used in the M-47 Patton tank . FirePower with the OHV V8 Main article: Chrysler FirePower engine Using their military experience with the hemispherical combustion chambers, Chrysler decided to use this layout in their first OHV V8 in 1951, introducing a 180 hp (134 kW) Hemi V8 with a displacement of 331 in³ (5.4 L). The term Hemi was not applied to this engine by Chrysler, however. Different Chrysler divisions had their own versions of the early Hemi engine, all with different names and displacements. Chrysler and Imperial called their versions the FirePower. DeSoto, (Chrysler's now defunct medium class make), called theirs the FireDome (dome = hemi), Dodge had a smaller version, known as the Red Ram. Only Plymouth didn't have a version of the hemi. Their V-8 engine, introduced in 1955 as the "Hy- Fire", didn't have a hemispherical head design. Plymouth wouldn't get a hemi engine until the 1960's.As soon as this engine was introduced, Briggs Cunningham chose to use the Chrysler OHV V8 in some models of his automobiles designed as race cars for international motor sports. A Chrysler-powered Cunningham C5-R won first ... read more

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