Dodge Diesel History
The Dodge - Cummins Connection
Dodge first began producing a diesel powered truck in 1989, when a 5.9 liter Cummins turbodiesel came to rest in the engine bay. Measuring in at 359 cubic inches, the Cummins turbodiesel generated 160 horsepower at 2,500 RPM & 400 lb-ft of torque at 1,700 RPM. The Cummins produced more torque than its Chevrolet & Ford competitors, and the diesel powered Dodge gained a significant amount of attention in the truck market place due to this. Even though Dodge was years behind Ford & Chevrolet in releasing a diesel powered truck, they made a huge impact in the light duty truck industry. The Cummins diesel engines that have been used in Dodge trucks can be divided into 3 versions:
12 Valve B-series 5.9L
The 12 valve Cummins B-series was produced between 1989 - 1998. It is popular in the performance aftermarket due to its simplicity & overall durability. It is also the most frequently swapped diesel engine do its compact width and performance potential. Being all mechanical, it is easily swapped into a truck and there are no electronics to deal with.
More info: 5.9L Cummins 12-valve
24 Valve 5.9L ISB
The 24 valve Cummins ISB began production mid-year 1998. The 12 valve Cummins needed to be replaced with a cleaner version to meet updated emission requirements, and so the ISB was born. A Bosch high pressure common rail injection system replaced the VP44 mechanical injection system in 2003. In the performance aftermarket, the ISB is very easily modified & parts are readily available. A simple tuner can make the ISB produce gobs of extra torque. One downfall of these trucks is the transmission. Dodge transmissions tend to fall short of their competitors, so if performance modifications are made, a transmission upgrade is a must.
More info: 5.9L Cummins ISB 24-valve
24 Valve 6.7L ISB
The light duty diesel market was plagued, once again, by more stringent emissions regulations. For this reason, the 5.9 liter Cummins was replaced mid-year in 2007. The new and current Cummins displaces 6.7 liters and features a diesel particulate filter (DPF), exhaust after treatment, & an exhaust gas recirculation system (EGR) as components of its new emissions system. The 6.7 produces a respectable 350 horsepower at 3,000 RPM & 650 lb-ft of torque at 1,500 RPM.
More info: 6.7L Cummins