What is PowerValve?
The PowerValve is a larger diameter replacement valve for the Ford E4OD and
4R100 transmissions offered in two different sizes 7/16 for medium shift action
and ½ for hard shift action. The PowerValve is especially recommended
on high horsepower diesel applications where the factory valve is not able to
handle the added power and thus making the transmission "slip", the
PowerValve is ideal for this application.
What does PowerValve do?
The Power valve works to eliminate the common erratic shift problem of the 4R100
transmission by increasing the valve body pressure. This problem is even more
prevalent in high output engines and causes a decrease in transmission shift
accuracy and speed. The transmission valve's piston diameter is increased from
3/8 (factory) to either 7/16 (medium) or 1/2 (firm) depending upon application.
The grooves found on the original piston design have shown to reduce pressure
as well, so they have been eliminated on our stainless steel piece. By installing
the transmission valve, the increase in piston diameter will raise the line
pressure which in turn will allow the clutch pack to apply faster thus creating
a more positive shift.
Construction
The CNC milled T-6061 aluminum sleeve is available in two different piston diameters,
7/16 for medium shift action, 1/2 for firm shift action. The 1/2 diameter is
recommended for high output applications. The piston is machined out of stainless
steel for maximum durability.
Main Features
- Increase shift firmness
- Increase shift quickness
- Two different valve sizes from medium to hard
Benefits
The transmission valve by DiabloSport not only greatly improves the shift action
of the transmission it also reduces the transmissions temperature. Since the
positive shift action makes the transmission shift gears quicker, there will
be less labor between gear selections thus keeping the transmission oil temperature
low especially in heavy towing and high output applications. Weather driving
around the track, in the city, or towing a trailer down the interstate, the
transmission valve will benefit every driving condition.
Tech Support
In this busy world everybody needs an immediate answer. In order to better answer
you technical support questions, we have carefully gone through our FAQ and
Knowledge Base system and updated it with your most commonly asked questions
and a lot of additional information. You will most likely find there what you
are looking for.
PMT Diesel
recommends that the install should be performed by a licensed transmission shop
as the install requires some transmission knowledge and special tools.
