Here's my question, I am thinking about installing an exhaust brake on my 2004.5 3500 with a 6 speed and I am wondering what makes are operated by compressed air that I could also add a small tank to that could be used for airing tires, horns or other limited use applications. But at the same time I want a good EB that will attach directly to the turbo and possibly plug into the wiring harnesses without a lot of "hunt and splice".

 

I believe BD does http://www.bd-vfi.com/ram/ramexhaustbrake.html

 

Take a look at the PacBrake!

 

Pac brake is one I'm looking at, maybe the prxb when available. I know jacobs is the one that dodge wants us to use but why buy a vacuum pump for just one purpose. I have also looked at b-d and banks but want your experiences with them all.

 

jacobs e-brake is now available for our trucks. They are not activated with air, (controled by the ecm). there are the part #'s

mopar 82208835AB

cummins 4089924

part numbers above are for 2004.5-20005 trucks.

 

The Jacobs has a vacuum pump and it runs all the time.

 

RankRam is correct. Plus, the Jake is the only exhaust brake that won't void your engine warranty. Not sure how you would turn a vac into a pressure pump without having a port on the exit of the vaccum (pressure side).

 

bigblock2stroke so you are saying my engine warrantee is voided?

 

I would ask your dealer.

The Jacobs is designed with cooperation from Cummins and meets Cummins design criteria. It is very important to maintain certain design criteria with exhaust brakes, specifically the buckling load on the pushrods and the system backpressure. Bottom line is that you don't want your exhaust valve floating open when the piston come up because you had too much backpressure (but good braking power). You also don't want to fatigue pushrods.

 

When I bought my truck the dealer accessory dept had both the PAC and the Jacobs. The PAC was used on the older trucks and the Jacobs for the 04.5 and newer. Not sure why other than it was designed to be plugged right into the ECM wiring harness. The ECM from what I understand does some neat things with the Jac that is not figured into the other brands. As PAC has been in business for a while I don't think they would have a design that would cause the engine to have a failure. There are a lot of PACs out there so kcbarnes should be getting a lot of experienced answers.

 

FWIW

The Pac does hookup to the ECM, just like the Jake.

 

I believe it, as I have heard numerous accounts for people purchasing a fueling box from the dealer and the dealer saying he'd honor the warranty.

If I were you, I'd keep the receipt showing he sold you the product. I'd also double check any paperwork that could show a disclaimer for them to be able to back out of "their word".

I would feel more comfortable if your dealer also did the install.

FWIW, both have to go to the ECM so that it can get throttle position. It needs this to know that you are giving it throttle and the brake should be off. Conversely it needs to know that you let off the pedal and it needs to turn on.

 

Bigblock2stroke, you sound pretty educated on this matter. have you had any negative experience with pacbrake or do you just like the fact the cummins/dodge will warranty jacobs?

 

I like not giving anything to the dealer that he can use against me to save him money. Even if it costs me $400 more.

I can definitely understand RankRam's perspective though, especially if the dealer sold it to him and didn't warn him of the warranty.

 

I sure wish I could get a straight answer from someone on the Jacobs E Brake issue. My dealer, as of last week, said DC still has not approved Jacobs for sale or installation on 2004 0r later trucks. And they are waiting for approval for the Pac-Brake but do not have any in stock. Has anyone heard similar??