NOTE: TRUCKS WILL AUTOMATIC TRANSMISSIONS WILL REQUIRE EITHER AN AUTOLOC OR A TORQLOC ALONG WITH THIS BRAKE KIT.
UPGRADED 60LB. EXHAUST VALVE SPRINGS ARE REQUIRED TO INSTALL THIS BRAKE (stock springs are 40lb).
SEE RELATED PRODUCTS BELOW.
Descending grades with trailers can be hazardous and lead to tricky situations, resulting in over heated service and trailer brakes, that leads to brake fade, excessive wear, and costly unwarranted repairs. BD Engine brake has been the industries time proven VARIABLE REGULATING BACK-PRESSURE EXHAUST BRAKE.
Controlled by a dash-mounted On/Off toggle switch or optional stick-mounted rocker switch for manual transmissions, the BD brake communicates with the engine’s electronic idle verification board for quick engagement.
All BD Brake kits come complete with the brake, air compressor (where applicable), mounting hardware, port to monitor the brake’s retarding performance, complete instructions and most models come with a pre-drilled and tapped EGT port for a pyrometer probe if desired.
The brake valve is actuated by a powerful, three-inch vacuum cylinder.
How it works
Using BD’s exclusive Variable butterfly Technology, providing peak retarding power throughout the engine’s rpm range unlike some models that rely on a hole/orifice within the butterfly to calibrate back-pressure only in the higher engine RPM.
Where it mounts
Most vehicle applications will either have BD’s turbo-mount design which bolts in place of the factory elbow between the turbo and the exhaust system or the inline design mounts in the exhaust system between the engine and muffler/DPF/cat.
Advantages of Butterfly Regulation
The advantage to regulating the butterfly vs. other brands is: The Butterfly is constantly exercising thus reducing the possibility of carbon and rust deposit forming that can cause premature ware and binding. Furthermore no maintenance or lubricating is required providing miles of trouble free service.
The BD Brake’s rugged cast-iron housing incorporates BD’s exclusive AlumiBronze bushing and positive sealing piston ring, no blind holes for carbon and rust to form, and miles of leak free retarding.
The stainless steel butterfly shaft has proven to stand up under the harsh, high-heat conditions of the exhaust environment. The offset butterfly valve won’t stick and has been strategically placed in the elbow so that it won’t impede exhaust flow when in the open position.
Trucks With Automatic Transmissions (Important)
Automatic-equipped trucks prior to 2006 require BD’s programmable AutoLoc and PressureLoc kits to electronically control torque converter clutch engagement. This addition effectively reduces slippage, resulting in peak retarding performance as well as lower transmission temperatures.