Exhaust Brakes | 1989-1993 Ram 5.9 Cummins

The 1989 Dodge equipped with the Cummins powerplant had a GCWR of 16,000 lbs. properly equipped, but many that used these trucks, such as Hot Shots, had typical 30,000 lbs. rolling behind them. While these engines produced enough torque to handle this, stopping was a whole other issue! Even with the strongest of service brakes, these trucks stopping ability was marginal to say the least. And this is where the need for an exhaust brake comes into play.

At Diesel Power Products, we carry exhaust brakes from the biggest names in the diesel exhaust brake industry. Both PacBrake and BD have long been recognized as the innovators when it comes to exhaust brakes. All 1989-1993 Cummins equipped with an automatic transmission will require a torque converter lockup for full exhaust brake function. This is due to the fact that on these trucks, when the accelerator pedal is released, the torque converter goes into a kind of free spin, similar to depressing the clutch pedal on a manual transmission, thus not transferring 100% of the braking through the drive train to the rear tires. Also these trucks require 60 psi exhaust valve springs, because the factory springs are not rated for the amount of pressure the exhaust brake produces.

As always, if you have any questions about your particular application and what we would recommend do not hesitate to give us a call and we would be happy to assist.

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