In 1998, the BT 5.9 was redesigned as a 24 valve engine to updated emission requirements. ISB stands for Interact System B. The ISB featured a Bosch VP44 rotary injection pump until 2003, when the injection system was upgraded to a Bosch high pressure common rail fuel injection system, which increased power output. In 2001, a high output (HO) version of the ISB became available, which slightly increased the ouput of manual transmission equipped trucks. A 610 version of the ISB became available which pushed torque to 610 lb-ft. Well known for its low speed torque, the Cummins 5.9 ISB has an advantage over V8 diesel engines in the light duty truck market.
-5.9L Cummins ISB Specifications:
Displacement:
-359 cubic inches, 5.9 liters
Configuration:
-Inline 6 cylinder
Firing Order:
-1-5-3-6-2-4
Compression Ratio:
-16.3:1, 17.2:1 (high output version)
Bore:
-4.02 inches
Stroke:
-4.72 inches
Injection:
- Direct Injection
- 1998.5 - 2002: Electronically controlled Bosch VP44 rotary injection pump.
- 2003-2007: Bosch high pressure common rail injection.
Aspiration:
-Holset turbocharger
Valvetrain:
-OHV, 4 valves per cylinder, solid lifter camshaft
Oil Capacity:
-12 quarts
Weight:
-approx. 1,150 lbs
Horsepower:
-235 - 325 HP @ 2,900 RPM
Torque:
-460 - 610 lb-ft @ 1,600 RPM
Governed Speed:
-3,200 RPM
Years of Operation:
-1998.5 - 2007
Info took from http://cumminsdieselspecs.com/24v.html
Home 
