Cummins engines are used for large trucks and for diesel fuel vehicles. One popular Cummins engine is the 855 Cummins Engine, technically called the Cummins NT-855-F2. Since the 1980s, Cummins has released several models of the 855 engine. Although each engine usually is a 6-cylinder engine and can hold 14 litres of fuel, the engines differ in torque power. The main 855 engines have a year range from 1988 to 1991, 1988 to 1993, 1991 to 2000, and the current 855 Cummins engine, which was released in 1991.
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Torque is a major measurement in the power of engines since it reveals the amount of force the engine can utilise to move a vehicle. Torque is defined by the force that causes an object to rotate. All measurements for torque are in feet per pound.
Both the 1988 to 1991 and the 1988 to 1993 855 Cummins engine had a rod torque range of 75 to 175 feet per pound. The 1991 to 2000 and the 1991 to current models fair slightly better with a rod torque range of 75 to 195 feet per pound.
Cylinder Head Bolt Torque
The cylinder head bolt torque of all Cummins engine models have remained consistent. The range of the torque is 100 to 220 feet per pound. It is noted that the torque moves in a 90 degree direction.
The main torque of the 1988 to 1991 Cummins engine requires a one inch bolt and can carry a load of 110 to 305 feet per pound. The 1988 to 1993 Cummins engine can utilise either a ¾ bolt or a one inch bolt. If you use the ¾ bolt, the torque specifications range from 90 to 255 feet per pound. If you utilise the one inch bolt, the torque specifications range can be 110 to 305 feet per pound. Both the 1991 to 2000 and the 1991 to present 885 Cummins engines have a main torque specification of 90 to 255 feet per pound.
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