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PressureLoc Transmission Kit
A BD PressureLoc increases convertor lock-up clutch applied
pressure on 1994 to 2001 Dodge trucks by 30% at light throttle pressure. The kit can
easily be installed on the stock transmission and assists in preventing
convertor shuddering and transmission slippage.
Torque convertor clutch slippage results in high heat and eventual transmission
failure! The higher the horsepower, the lower the transmission line pressure
is, because line pressure is controlled by the position of the throttle
pedal. The diesel has so much torque at light throttle pedal movement
and thus low apply pressure at the lock-up clutch when the engine is at
its peak torque!
You can notice a shuddering torque convertor under throttle at low speeds,
and also under heavy throttle with high power engines.
The kit’s function is to increase the transmission line pressure
when the lock -up clutch is engaged. The PressureLoc cylinder rotates
the transmission’s throttle valve shaft to simulate 3/4-throttle
travel to increase the line pressure to 90% of what the valve body design
can attain at wide open throttle. The resulting pressure must be measured
and set when the kits are installed.
The PressureLoc is primarily designed for stock or mildly enhanced engine
applications and owners whom have installed an exhaust brake and want
some extra protection.
It is not a replacement for a modified valve body!
High horsepower and heavy-loaded applications should also be equipped
with the BD Valve Body with larger porting for pressures up to 180 psi.
The PressureLoc increases the clutch applied pressure to 90% of what the
valve body is capable of achieving at full throttle when you are only
at ¼ to ¾ throttle travel. This kit addresses the need for more clutch
holding pressure.
This pressure increase remains within the valve body design. The stock
valve body has 4.0 G.P.M flow when the torque convertor is locked up with
the PresureLoc engaged. Without the pressure lock engaged, this pressure
will be 4.0 G.P.M or less, depending on throttle pressure.
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