Real Compression Release Brake In A Cummins Ram Done... - Dodge Cummins Diesel Forum

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post #1 of 43 (permalink) Old 12-16-2012, 09:13 PM Thread Starter
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Real Compression Release Brake In A Cummins Ram Done...

Just saw this on YouTube. They don't give any info.




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post #2 of 43 (permalink) Old 12-16-2012, 09:40 PM
So the question is???
 
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Well seeing as they don't show the engine it's either a whole new head or some good sound editing....

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post #3 of 43 (permalink) Old 12-16-2012, 10:02 PM Thread Starter
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Yeah, if they had just the drive by shots I would be very skeptical, but I watched the video over and over and with the in bed shots I'd be very surprised if it's fake. The camera in bed sound and the revs at the end just seem to match too perfect.

If it's real it'll be very interesting to find out more info about it.

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post #4 of 43 (permalink) Old 12-16-2012, 10:10 PM
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Thats cool as can be. It sounds just like my n14 in my big truck. Curious to get some more info.


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post #5 of 43 (permalink) Old 12-16-2012, 10:16 PM
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I am curious... What is the difference between this and a Regular Exhaust brake?

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post #6 of 43 (permalink) Old 12-16-2012, 10:21 PM
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Most of the ones available for our trucks are air operated exhaust shutoff valves. Kinda like a warmup valve on an old powerstroke I think. The vgts are either opening or closing the veins.


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post #7 of 43 (permalink) Old 12-16-2012, 10:24 PM
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it's the pipe that is making most of that sound you can get a exhaust brake for a first gen you just have to have bigger spring's on the Valves .

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post #8 of 43 (permalink) Old 12-17-2012, 02:01 AM
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An exhaust brake doesn't sound like that, no way.

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post #9 of 43 (permalink) Old 12-17-2012, 02:16 AM
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Sounds wicked....would like to see engine pics

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post #10 of 43 (permalink) Old 12-17-2012, 03:37 PM
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Cant say what is actually in the video, but the sound at least, is a compression release brake (typically referred to as a jake brake, which is incorrect terminology)

The 5.9/6.7s have always had exhaust brakes available, basically just a butterfly valve in the exhaust, or in the case of a VGT, the veins close up to produce the same effect. These sound nothing like a compression release brake (like in the video)

A compression bleeder brake would be much easier for any joe-blow to build, but again the sound would differ from what you hear in the video

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post #11 of 43 (permalink) Old 12-18-2012, 09:21 PM Thread Starter
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They put up another video today with engine shot... Also posted this message:

"Sorry to keep being so vague, but our attorney has warned us to "keep our powder dry" for a little while longer. We included an under-hood shot, but unfortunately cannot reveal the method by which we are opening the valves just yet."


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post #12 of 43 (permalink) Old 12-18-2012, 09:29 PM
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Looks like they are using some sort of high pressure oil type solenoids to open the valves. How it is controlled I do not know how.

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