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The International Harvester Company (IHC) has been building its own proprietary truck engines since the introduction of their first truck in 1907. International tended to use proprietary diesel engines. In the 1970s, IHC built the DVT 573 V-8 diesel of 240 and 260 hp (179 and 194 kW) but these were not highly regarded and relatively few were sold.
The 4JG1 engine has a trochoid type oil pump, gear driven from the camshaft. The fuel system operates by plunger and nozzle and is of the high pressure solid injection type (Zexel in-line Bosch A-type). The starter motor is a 12 V unit. The firing order 1-3-4-2. 18.6 48 kW (65 PS) at 2500 rpm 205 N⋅m (151 lb⋅ft; 20.9 kg⋅m) OHV 4JG1T
For 1967 the four was replaced with International's 266 cu in (4.4 L) V8 engine producing 154.8 hp (115 kW), rather than the overworked four, and given the name 908B (6,531 built, followed by 3,656 908C for model year 1968). The wheelbase was stretched to 115 in (2,920 mm), and the bed was longer as well, at 6 ft 8 in (2,030 mm).
Until the 88 series, all numbered series tractors followed a simple numbering system. The first 2-3 digits was the horsepower rating, and the last number was the number of cylinders, so a 1486 was rated 148 hp and had a 6 cyl. engine, while the 1468 had 146 hp and a v8 engine. In 1964, IH made its four-millionth tractor, an 806.
These engines were designed to have a total-loss lubrication system, with the motor oil held in a separate tank from the fuel in the vehicle, and not pre-mixed with it as with two-cycle engines, but mixed within the engine instead while running. Castor oil was often used because it lubricates well at the high temperatures found in air-cooled ...
In 2019 International markets six separate series of medium-duty, heavy-duty, and severe-service trucks with loaded weights from 16,000 to 92,000 pounds (7,300 to 41,700 kg) and up to 140,000 pounds (64,000 kg) including trailers. International also has always built a wide range of custom and speciality use trucks and chassis.
The Navistar DT (Diesel Turbocharged or Diesel Turbo) engine family is a line of mid-range inline-6 diesel engines.With horsepower ratings ranging from 170 hp (130 kW) to 350 hp (260 kW), the Navistar DT engines are used primarily in medium-duty truck and bus applications such as school buses, although some versions have been developed for heavy-duty regional-haul and severe-service applications.
The International Fleetstar is a series of heavy-duty trucks that was produced between 1962 and 1977 by International Harvester.Slotted above the Loadstar and below the Paystar and Transtar conventionals introduced after it, the Fleetstar was the first truck line that International designed specifically for vocational use.