2nd Gen Non-Engine/Transmission 2000 Ram 5 sp 5.9L Pac-Brake

[CHROME~TURBO]

Is there any way to get the Pack_Brake to have a bit more braking power. It works great but was just asking if there was anyway. Thank you

 

[Midnite]

It depends on what you have installed. I have a Pac Brake on my 2000 truck, and as I recall there was some kind of bushing in the flapper valve hole that you needed to remove to allow more gas blow-by if the brake was installed on a 12 valve truck with stock valve springs (a 12 valve needs 60 lb. valve springs to safely use max braking power). You might have to take off your brake in order to check if you have that in there. If it's missing, then you could get it from Pac Brake and install it to give you a little more braking.

The other thing you could do is downshift earlier so most of your braking happens at higher rpms. The Pac Brake is more effective at higher rpms.

Short of those two things, I can't think of anything you can do to get more braking out of it.

 

[jelag]

The butterfly in the brake came stock with 2 ports in it... . one can be plugged with a kit if the engine has HD Cummins valve springs installed...

The butterfly with 2 ports has about 35 lbs of back pressure and once the HD springs are installed you can raise that pressure to 60 lbs of back pressure... . BTW do not remove the butterfly from the shaft... its been factory preset... .

Understand that if you exceed the recommended back pressure there is a good chance that the back pressure will push open and exhaust valve at the wrong time, thus allowing the piston to strike the valve...

You can either get the HD valve springs from Cummins or order from Pacbrake the complete kit... . valve springs and plug...

Remember that it takes an experienced tech to replace the valve springs and reset the valve clearance... .

On the brake housing is a 1/4" pipe plug, this is a test port used to calibrate the housing during manufacturer and can be used for field testing with the proper equipment...

Hope this helps. .

 

[Midnite]

With a 2000 truck he doesn't need to worry about the 60 lb. valve springs. I brought them up to illustrate a possible scenario that would result in less than optimal braking action--a 24 valve engine with a Pac Brake set up for a 12 valve engine with stock springs.