5.9L Cummins 12-valve

 

The Cummins B 5.9 was introduced in 1984 as an agriculture engine. It was not until 1989 that it became the first B-Series Cummins engine to be used in a light duty truck; the Dodge Ram. The B 5.9, also known as the "12 Valve", became a popular alternative to the V8 engines typically used in these trucks, as it generated nearly double the torque at low engine speeds and nearly doubled the fuel ecomony as well. Mid-year in 1991, the B 5.9 recieved an intercooler. The 12 valve featured Bosch Direct Fuel Injection utilized a VE injection pump between 1989 - 1993, and a P7100 injection pump between 1994 - 1998. The 12 valve 5.9 remains one of the most popular versions of the Cummins produced.

5.9L 12v Specifications:

Displacement:	359 cubic inches, 5.9 liters
Configuration:	Inline 6 cylinder
Firing Order:	1-5-3-6-2-4
Compression Ratio:	17.0:1
Bore:	4.02 inches
Stroke:	4.72 inches
Injection:	Direct Injection: Bosch VE injection pump (1989-1993). Bosch P7100 injection pump (1994-1998).
Aspiration:	Holset turbocharger
Valvetrain:	OHV, 2 valves per cylinder, solid lifter camshaft
Oil Capacity:	11 quarts
Weight:	approx. 975 lbs, 905 lbs dry.
*Horsepower:	160 - 215 HP @ 2,500 RPM
*Torque:	400 - 440 lb-ft @ 1,600 RPM
Governed Speed:	2,700 RPM
Years of Operation:	1989 - 1998

*Varies with model year.

 

5.9L 12v Cummins Engine Dimensions:

Length:	40.0 inches
Width:	24.9 inches
Height:	37.9 inches

5.9L 12v Cummins Info:

• The 6 B 5.9 Cummins was originally used in Case agriculture equipment.
• The 12-valve 5.9L is popular in Diesel motorsports due to its simplicity, reliability, strength, & performance potential.