Practically 40% of the sooner Cummins 5.9-liter parts made it to the brand new 6.7-liter diesel. Each featured common-rail direct injection, however the 5.9 has a Holset HE351CW fastened geometry turbocharger. Alternatively, the 6.7-liter Cummins diesel has a Holset HE351VE variable geometry turbo to supply extra energy whereas motivating the truck’s exhaust brake operate. Distinctive to Ram vans with the Cummins 6.7-liter diesel, the “turbo brake” fortifies the stopping energy and prevents extreme brake put on, which is superb when towing heavy hundreds.
The Cummins 5.9-liter made as much as 325 horsepower and 610 lb-ft of torque, however the fastened geometry turbo means coping with the inevitable turbo lag. In the meantime, the Cummins 6.7-liter diesel has a variable geometry turbocharger (VGT) to supply as much as 385 horsepower and 900 lb-ft of torque. However regardless of providing higher responsiveness and extra low-end torque, the VGT is susceptible to carbon buildup and sticky nozzles, points that would have an effect on the trendy diesel’s emission parts just like the EGR (exhaust gasoline recirculation) valve and the diesel particulate filter (DPF).