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The inline six-cylinder 71 series engine was introduced as the initial flagship product of the Detroit Diesel Engine Division of General Motors in 1938.. This engine was in high demand during WWII, necessitating a dramatic increase in output: about 57,000 6-71s were used on American landing craft, including 19,000 on LCVPs, about 8,000 on LCM Mk 3, and about 9,000 in quads on LCIs; and 39,000 ...
A 6-71 Gray Marine training engine aboard the Training Ship Golden Bear. The 6-71 Gray Marine Diesel Engine is a marinized version of the General Motors Detroit Diesel 6-71 engine produced by the Gray Marine Motor Company. It was used in landing craft during World War II and is used today in private boats and training facilities.
The Series 92 engines were introduced in 1974. [8] Compared to the Series 71 engines they were derived from, the Series 92 featured a larger bore of 4.84025 ± 0.00125 in (122.942 ± 0.032 mm) and an identical stroke of 5 in (130 mm) for a nominal displacement per cylinder of 92 cu in (1,510 cc), from which the Series 92 derives its name.
The GM Diesel/Detroit Diesel model 6051 Quad power pack consists of four inline 2-stroke diesel 6-71 engines mounted to one gearbox, usually with one shaft coming out of the power unit. The power units were fitted on landing craft and ships during World War II , ships including LCI(L) , [ 1 ] Prab (741) and Nahka (751) were fitted with two of ...
The ancestor of Detroit Diesel was the Winton Engine Company, founded by Alexander Winton in 1912; Winton Engine began producing diesel engines in fall 1913. After Charles F. Kettering purchased two Winton diesels for his yacht, General Motors acquired the company in 1930 along with Electro Motive Company, Winton's primary client.
The D637 and DH637 also share the same 17.5:1 compression ratio with their diesel V6 counterparts, introduced in 1966 on the 70-series trucks as an alternative to the established two-stroke Detroit Diesel 6V-53N. [9]
The introduction of the V-71 series in 1957 effectively doomed the 6-110, as both the 8-71 (568 cubic inches (9.3 L) displacement) and 12-71 (852 cubic inches (14.0 L) displacement) offered higher horsepower in a more compact form factor. However the high torque and great reliability of the 6-110 was still valued for heavy-duty applications.
The Series 53 was introduced in 1957; in 1961, the 4-53 and 6V-53 were introduced as options for the 1962 model year Chevrolet-branded medium and heavy duty trucks. [1]: 64 Production of Series 53 engines ended in the 1990s along with other two-stroke Detroit Diesel designs, as tightening emissions regulations could not be met with their design.