![]() ![]() Other Chrysler engines were released with more advanced combustion chambers, electronic fuel injection, and other modern improvements, but the length of the Slant Six precluded its use in Chrysler's front-wheel-drive cars. Performance figures were only slightly higher, but driveability was substantially improved. Starting in the early 1970s, primitive emission controls adversely affected driveability and power, though a version of the 2-barrel carburetor package first released for marine and export markets in 1967 was offered in North America from 1977 to 1983 under the "Super Six" name. Most Slant Sixes were equipped with a single 1-barrel carburetor. After an early factory racing program was discontinued by 1962, the Slant Six did not receive much performance development. The G-engine gave better performance than its competitors at its 1960 introduction, and generally kept up through the 1960s and early-1970s, though engines like the Pontiac OHC Six, a brief GM outlier, bested the performance of most versions of the Slant-6. Efficient cooling and lubrication systems, a favorable ratio of connecting rod length to stroke, and a forged steel crankshaft (on engines made through mid-1976) all contributed to the engine's strength and durability.The 2G engine, (Hemi) only has one more main bearing. Although only four main bearings are used, they are of the same dimensions as those in the 2G (1964–1971) Hemi, and fewer mains results in a crankshaft better able to withstand the effects of torque. The block is of a deep-skirt design, with the crankshaft axis well above the oil pan rails for structural rigidity. ![]() An aluminum block was produced in 1961–1963, but most blocks were made of iron. The basic design is rigid and sturdy, in part because the engine was designed to be made of either iron or aluminum. The G-engine gained a reputation for reliability and durability. Problems playing this file? See media help. It was also purchased by other original equipment manufacturers for installation in commercial vehicles, agricultural and industrial equipment, and boats. The G-engine was used by Chrysler's international operations in locally produced vehicles. Replacement engines were built in Mexico through 2000. The G-engine was offered in various configurations in the North American market until 1983 in cars, 1987 in trucks, and 1991 for marine, agricultural, and industrial use. In 1960, the engine was called the "30-D Economy Six" engine by Plymouth marketers, referring to the 30° cylinder block angle. It was introduced in two piston displacement sizes in 1960: The 170 cu in (2.8 L) "LG" (low-G, referring to the relatively short engine block casting and crankshaft stroke) in the Valiant, and the 225 cu in (3.7 L) "RG" (raised-G, referring to the relatively tall engine block casting and crankshaft stroke) in full-size Plymouth and Dodge Dart models. This, in turn, provides for relatively good airflow through the engine despite the intake and exhaust ports being on the same side of the head rather than in a crossflow arrangement. The Slant Six manifold configuration gives relatively even distribution of fuel mixture to all cylinders, and presents less flow restriction. This has the effect of broadening the torque curve for better performance. 6 intake runners are of approximately equal length, the No. The slanted cylinder block also provides space in the vehicle's engine bay for intake and exhaust manifolds with runners of longer and more nearly equal length compared to the rake- or log-style manifolds typical of other inline engines. This enabled vehicle stylists to lower hood lines, and also made room for the water pump to be mounted with a lateral offset, significantly shortening the engine's overall length. This 30° inclination had already been used by Mercedes-Benz in their 300SL sports car with the M186 engine since 1952. Its characteristic 30° inclination of cylinder block gives it a lower height overall engine package. The Chrysler Slant Six engine was a clean-sheet design, led by Willem Weertman, later Chrysler's chief engine designer. It was a direct replacement for the flathead Chrysler straight six that the company started business with in 1925 until the old design was discontinued in the 1960s. It was a clean-sheet design that began production in 1959 at 170 cubic inches (2.8 L) and ended in 2000 at 225 cubic inches (3.7 L). Introduced in 1959 for the 1960 models, it was known within Chrysler as the G-engine. The Slant-Six is the popular name for a Chrysler inline-6 internal combustion engine with an overhead valve reverse-flow cylinder head and cylinder bank inclined at a 30-degree angle from vertical. Full pressure w/full-flow filter & gerotor oil pump
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