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A hemispherical head ("hemi-head") gives an efficient combustion chamber with minimal heat loss to the head, and allows for two large valves.However, a hemi-head usually allows no more than two valves per cylinder due to the difficulty in arranging the valve gear for four valves at diverging angles, and these large valves are necessarily heavier than those in a multi-valve engine of similar ...
Hot Head Burritos is a restaurant chain based in Dayton, Ohio.The restaurant specializes in Mexican-style burritos and other Mexican-style foods. Hot Head Burritos was ranked by AOL.com in 2009 as one of America's next big chains. [1]
Cylinder head of the Nissan VQ35DE engine. In engine design, the penta engine (or penta head) is an arrangement of the upper portion of the cylinder and valves that is common in engines using four valves per cylinder. [1]
Chrysler developed its first experimental hemi engine for the Republic P-47 Thunderbolt fighter aircraft. The XIV-2220 was an inverted V16 rated at 2,500 hp (1,860 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.
The Polyspheric or Poly engines were V8 engines produced by Chrysler from 1955 to 1958 as lower-cost alternatives to the Hemi engines. [1] These engines were based on the Hemi engines, using the same blocks and crankshaft parts, but completely different cylinder heads, pushrods, exhaust manifolds and pistons.
Donovan developed the 417 cu in (6,830 cc) hemi-head V8 to overcome the tendency of 392 cu in (6,420 cc) Chryslers, then used by Top Fuel racers (many of them friends and customers of his), to crack their iron blocks.
The 1971 Plymouth Hemi ‘Cuda convertible is one of the rarest and most coveted muscle cars ever made, with only 11 built that year and just two four-speed models sold in the U.S.
Tom Hoover was the leading engineer of the Chrysler 426 Hemi engine.. Tom Hoover's development of the first trademarked Hemi engine through Chrysler Corporation was a major success for the brand through the mid to late 1960s and early 1970s.