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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 ...
The engine's compression ratio is 18.7:1 with a 4.250 inch bore and a 5.00 inch stroke. [1] The engine weighs 2,185 lb (991 kg) and is 54 inches long, 29 inches wide and 41 inches tall. [1] At 2,100 revolutions per minute the engine is capable of producing 230 horse power (172 kilowatts). [1] V-type versions of the 71 series were developed in 1957.
number of engines - 4; model of engines - 671LA28H, 67LC28H, 671RC28H, 671RA28H series 71 engines; Number of cylinders per engine- 6; Bore - 4¼ "stroke - 5" cubic inch per cylinder 71ci; cubic inch per engine 426ci, 7.0L; Engine RPM- 500 to 2100; gearbox reduction ratio- 3.23-1; rated HP - 900 total; lube oil Cap. per engine - dry, 19 qts
The Z engine was a 12-18 horsepower, 4 cylinder, L-head design that was said to resemble the model T Ford engine. By 1924 the company was in poor financial condition and Mulford managed to buy back the marine engine division, re-establishing Gray Marine Motor Company. Gray Motor Corporation ceased producing cars by 1926.
1939: Series 71 engines installed in buses manufactured by Yellow Coach (acquired by GM in 1943). World War II: Tanks, landing craft, road building equipment and standby generators needed compact, lightweight, two-cycle engines. By 1943, Detroit Diesel employed 4,300 people, more than 1,400 of them women.
Detroit Diesel Series 50; Detroit Diesel Series 53; Detroit Diesel Series 60; Detroit Diesel Series 71; Gray Marine 6-71 Diesel Engine; Detroit Diesel Series 92; Detroit Diesel 110; Detroit Diesel Series 149; Detroit diesel 6051 quad-71
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 F Model offered 5 different diesel engines, Mack's Maxidyne and Thermodyne at 260-375 hp, Cummins - 250-350 hp, Detroit Diesel - 270-430 hp and Caterpillar - 325 hp. Cat3406 is a big-bore diesel available in both high-torque-rise and conventional torque-rise versions; Detroit Diesel 71 series, provided power with a high torque curve.