ebpv valve as exhaust brake - Ford Powerstroke Diesel Forum
LinkBack Thread Tools Display Modes
post #1 of 3 Old 01-15-2011, 12:22 PM Thread Starter
Powerstroke.org Rookie
Join Date: May 2009
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
ebpv valve as exhaust brake

Ok guy's been searcing all day. I have an 03 7.3 automatic and I would like to do the exhaust brake mod. Do I have to do the TC lock mod as well. also How can I put the exhaust brake on a on off switch?
chetgoff109 is offline  
post #2 of 3 Old 01-17-2011, 12:02 AM
Powerstroke.org Fanatic
slcpunk74's Avatar
Join Date: Aug 2007
Location: SL,UT
Posts: 105
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Things to consider. Copied from PHP's site

Power Hungry Performance - Frequently Asked Questions

Do you offer a "decel" or "exhaust brake" calibration?
Simply put, no, we don't because it goes against our business philosophy which, in part, is to provide safe, reliable products to our customers.

For those who don't know, this is a calibration that uses the EBV (Exhaust Backpressure Valve) as a makeshift exhaust brake. While this setup may work reasonably well for lightly loaded vehicles, we generally do not recommend this type of calibration... at least not for automatic transmission vehicles. There are a few reasons we don't recommend this.

First, in order to transfer the energy of the moving vehicle to the engine during deceleration, two things must occur: the torque converter must remain locked, and the coast clutch must be engaged. The problem with this is that the coast clutch on a stock transmission only has 3 friction plates, and these are smaller than the standard forward clutches. On 2001 and later transmissions, you also run the possibility of damaging the intermediate sprag or "diode," which will result in an immediate transmission teardown. Again, lightly loaded vehicles would have less of a problem with this, but the general idea of an exhaust brake is to be able to slow larger loads without overheating the standard brake system. It is these types of loads that can cause transmission damage. Obviously, a manual transmission would be free from these types of situations.

Second, whenever you increase exhaust backpressure, you need to make sure that the exhaust valve springs are capable of preventing the pressure in the exhaust system from lifting the exhaust valve from the valve seat, as this would result in a collision with the piston. Normal valve spring seat pressure is 70-75 PSI for NEW valve springs and deteriorates from there. Given that the surface area of the back of the exhaust valve is approximately 1.9 square inches, it would take only 40 PSI of exhaust pressure to lift the valve off the seat, even with new valve springs.

To put it simply, if you plan to use an exhaust brake, either through the use of the EBV or by purchasing an aftermarket stand alone unit, you will need to consider the condition of your transmission and exhaust valve springs in order to ensure safe, reliable operation.

99 X-cab short bed, lifted, 325/60/18, gauges, ts 6pos, dynomax race muffler, diy intake, ddm 6000k hids, custom prerunner stuff...

vvvv TOWS THE vvvv
1994 Toyota class 7 desert truck
slcpunk74 is offline  
post #3 of 3 Old 01-17-2011, 04:01 PM
Powerstroke.org Rookie
jchase's Avatar
Join Date: Mar 2010
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
swamp's diesel performance look under how to's i did this and it works good

1999 F350 4 door long box 2wd 6 speed
TS performance 6 position chip
MBRP 4" straight pipe
Homemade intake using a 45 4" exhaust pipe & a 6637 filter
EGT and Boost gauge
jchase is offline  

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome