Descending grades with trailers can be hazardous and 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 lighted 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.
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.
For modified Turbo and engine applications: Got a modified or twin-turbo
application? BD offers a remote mount exhaust brake that incorporates
all of our standard technology found in our turbo mount units in a 4"
free flowing design that won't impede the exhaust flow and performance
enhancements you worked so hard to achieve.
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.
Stainless steel butterfly shaft that 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.
Brake valve is actuated by an air cylinder (newer models) or a powerful,
three-inch vacuum cylinder (earlier models). The durable air
compressor included in later model kits can even be used for other
applications, such as air horns, air bags even air-ride fifth wheel
hitches - it's that tough.
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.
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 EGT port.
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