Engine Brakes aren’t just for big rigs anymore… - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 3 (permalink) Old 03-25-2015, 08:32 PM Thread Starter
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Engine Brakes aren’t just for big rigs anymore…

The LoadLeash for Cummins 6.7L by Pacbrake is a ‘weeper’ or ‘bleeder’ type engine brake which works in tandem with the vehicle’s variable geometry turbo (VGT) exhaust brake to provide an additional 150 retarding horsepower. It functions by slightly holding the exhaust valves off the seat during the complete engine cycle with the VGT providing exhaust back pressure and increased boost pressure.

Two braking cycles are achieved in the process :
1. The first braking cycle is accomplished during the exhaust stroke when the piston is pushing the cylinder pressure past the open
exhaust valve against the “closed” VGT.

2 The second braking cycle occurs during the compression stroke with the piston is pushing the cylinder pressure past the open
exhaust valve against the “closed” VGT.

The expansion stroke is eliminated by the open exhaust valve. With work being done on both the compression stroke and exhaust
stroke we are now doing retarding work on two engine cycles.”

For more information, contact Pacbrake at 800.663.0096 or visit http://www.pacbrake.com/P-67

** A $250 mail-in rebate is currently available on any LoadLeash purchase made before April 15, 2015. Rebates can be found at www.pacbrake.com/rebate **

PACBRAKE
Engine & Exhaust Brakes
On-Board Air systems, air bags, horns and more.
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post #2 of 3 (permalink) Old 03-30-2015, 02:20 AM
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I have a couple of questions about the LoadLeash.

1. I think everyone wants to know, will Chrysler void my warranty for the presence of the LoadLeash?

2. What do drive pressures look like with LoadLeash?

3. Will LoadLeash work on a deleted truck? (Im not yet but maybe one day again sometime)

4. Are Head studs necessary with the addition of LoadLeash?


Thanks!

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post #3 of 3 (permalink) Old 04-01-2015, 10:40 PM Thread Starter
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Firstly thank you for your questions.
At this point in time Chrysler and Cummins do not provide any type of approvals. If warranty is a concern it is always probably best to check with your dealer prior to making any modifications. In this area I can certainly help providing technical information, data, etc, so that your dealer is familiar with out product operation and validation process.
The drive pressures would be less than that when under power and largely un effected
Deleted EGR .....yes it will work with.
There is 3 head studs that come with the LOADLEASH , you do not have to change the other head bolts.

Hope that helps!

Pacbrake

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Engine & Exhaust Brakes
On-Board Air systems, air bags, horns and more.
For further details check out
www.pacbrake.com
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neeltburn (04-04-2015)
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