Exhaust Brake on a 12 valve Hot Rod Cummings, manual trans?

[Blanco1]

I’ve been considering an Exhaust Brake for years while traveling with our big Lance 900 in our truck bed.

But now that I have sold that & I’m towing a heavier Travel Trailer & on our 1st outing probably drove around 2000 miles & I’ve sold off my other toys & plan to focus on my tow rig & want to start with an exhaust brake & maybe water/meth injection after that?

I was telling a co worker & he started asking about being I have mods bringing me to 500 HP.
If that might be an issue?

I can’t imagine why it would cause problems?

But wonder if I’m wrong?

& then what might be my best bet for the best help on those long steep grades?

Don’t want to be over heating my brakes.

I figured I’d mount the switch right under the shifter knob.
I’ve heard there’s even adjustable models & some with built in safety’s like in case I forget to turn off the brake I don’t stall the truck while shifting?

I’ve heard of other options that would also turn it off when I accelerate.
& back when when I let off?

I’ve also heard of turbos that have them built in to it?

& would those work as well with out lowering my HP?

I also would mention , I have a 4” straight pipe from the turbo.

[Grit_dog]

Blanco1 wrote:

Grit dog wrote:
Exh brake is bolt on for your truck. Air is handy for air bags and bike tires, etc.
if you're really at 500hp I'm surprised you don't have upgraded valve springs.
It's a great addition.

Who said i didn't?

Should have said I’d be surprised if you didn’t.
So whaddaya got?

[rhagfo]

HadEnough wrote:

rhagfo wrote:

ScottG wrote:

HadEnough wrote:
Hmm...not how my exhaust brake works on my 2002 12v Cummins ram that is also a hot rod.

I leave my shift switch on all the time for around town driving and lights too.

The exhaust brake only kicks in when you are off the throttle about 1-2 seconds and in gear. At all other times, it's in standby.

That's how they work.

Yes, that's how it works (with delay) if your able to connect to the trucks ECM.
Some older trucks dont have a ECM connection for the EB so switches have to be installed.

That is really interesting, 2002 should be a 24V with an ECM, and then the EB would have a 2 second delay before applying. If you have a 12V in your 2002 the 12V would be fully mechanical and not have an EMC to control the EB.
I chose to make mine fully manual so I have full control over activation, so as soon as my foot is off the throttle EB is working! Empty it will almost bring the truck to a full stop in 3rd.

That IS really interesting... Since I wrote 12v when I meant to write 24v. Lol. Sorry about that.

That's a cool setup making it fully manual. Have you ever had to replace the switch? I've been cautious of turning mine on and off a lot just so I don't need to replace the switch at the shift.

No never need to replace, did need once to spray with contact cleaner. This is the switch from PacBrake.

[HadEnough]

rhagfo wrote:

ScottG wrote:

HadEnough wrote:
Hmm...not how my exhaust brake works on my 2002 12v Cummins ram that is also a hot rod.

I leave my shift switch on all the time for around town driving and lights too.

The exhaust brake only kicks in when you are off the throttle about 1-2 seconds and in gear. At all other times, it's in standby.

That's how they work.

Yes, that's how it works (with delay) if your able to connect to the trucks ECM.
Some older trucks dont have a ECM connection for the EB so switches have to be installed.

That is really interesting, 2002 should be a 24V with an ECM, and then the EB would have a 2 second delay before applying. If you have a 12V in your 2002 the 12V would be fully mechanical and not have an EMC to control the EB.
I chose to make mine fully manual so I have full control over activation, so as soon as my foot is off the throttle EB is working! Empty it will almost bring the truck to a full stop in 3rd.

That IS really interesting... Since I wrote 12v when I meant to write 24v. Lol. Sorry about that.

That's a cool setup making it fully manual. Have you ever had to replace the switch? I've been cautious of turning mine on and off a lot just so I don't need to replace the switch at the shift.

[rhagfo]

ScottG wrote:

HadEnough wrote:
Hmm...not how my exhaust brake works on my 2002 12v Cummins ram that is also a hot rod.

I leave my shift switch on all the time for around town driving and lights too.

The exhaust brake only kicks in when you are off the throttle about 1-2 seconds and in gear. At all other times, it's in standby.

That's how they work.

Yes, that's how it works (with delay) if your able to connect to the trucks ECM.
Some older trucks dont have a ECM connection for the EB so switches have to be installed.

That is really interesting, 2002 should be a 24V with an ECM, and then the EB would have a 2 second delay before applying. If you have a 12V in your 2002 the 12V would be fully mechanical and not have an EMC to control the EB.
I chose to make mine fully manual so I have full control over activation, so as soon as my foot is off the throttle EB is working! Empty it will almost bring the truck to a full stop in 3rd.

[Me_Again]

HadEnough wrote:
Hmm...not how my exhaust brake works on my 2002 12v Cummins ram that is also a hot rod.

I leave my shift switch on all the time for around town driving and lights too.

The exhaust brake only kicks in when you are off the throttle about 1-2 seconds and in gear. At all other times, it's in standby.

That's how they work.

You put a 12V in a 2002?

[NRALIFR]

Cummins12V98 wrote:


I always say "Cummings" is a place in GA.

I always say Cummings is an idiot from Maryland.

:):)

[Blanco1]

rhagfo wrote:

Blanco1 wrote:

JIMNLIN wrote:
I would contact EB dealers/mfg with those questions. They can give you answers on current their EB for the 5.9 Cummins. Some of the diesel speed shops carries them and can be helpful for tech questions on your modded 5.9 Cummins.

My '03 Dodge Cummins/NV5600 came with the Jacobs through Dodge Businesslink dealers which gave me a Dodge warranty (long gone now). The EB switch is under the shifter knob. It works in all forward gears (even reverse). It stays on with the clutch in or out....has a hi idle/EB on for fast warm ups.
The Jacobs is vacuum operated so it has a vac inline mechanical pump with a long long belt. I've had no problems with mine for over 300k miles.

Vacuum vs air pressure. Most brands are are operated with a remote air pump which are handy for airing up other things.

Airing up other things like what?
It probably would not properly fill up the tire to the proper PSI would it?

That might be a good selling point to me?

That is the PacBrake bonus, on board air. Pacbrake has the option for shiftier mounted rocker switch, simple flick of a finger.

I've also been wanting to install a Big Rig air horn being it sounds like one already. LOL!

[Blanco1]

Grit dog wrote:
Exh brake is bolt on for your truck. Air is handy for air bags and bike tires, etc.
if you're really at 500hp I'm surprised you don't have upgraded valve springs.
It's a great addition.

Who said i didn't?

[ScottG]

HadEnough wrote:
Hmm...not how my exhaust brake works on my 2002 12v Cummins ram that is also a hot rod.

I leave my shift switch on all the time for around town driving and lights too.

The exhaust brake only kicks in when you are off the throttle about 1-2 seconds and in gear. At all other times, it's in standby.

That's how they work.

Yes, that's how it works (with delay) if your able to connect to the trucks ECM.
Some older trucks dont have a ECM connection for the EB so switches have to be installed.

[Cummins12V98]

Blanco1 wrote:

ScottG wrote:


(BTW, it's a "Cummins")

Darn spell check on my phone!

Of course I know this I've owned this truck about 7 years?

I always say "Cummings" is a place in GA.

[HadEnough]

Hmm...not how my exhaust brake works on my 2002 12v Cummins ram that is also a hot rod.

I leave my shift switch on all the time for around town driving and lights too.

The exhaust brake only kicks in when you are off the throttle about 1-2 seconds and in gear. At all other times, it's in standby.

That's how they work.

[mowermech]

Many years ago, I had a 1994 Dodge Ram 3500 CTD with the Jacobs Rambrake on it. I towed a 32 foot triple slide fifth wheel with that truck, over the Continental Divide, the Cascades, and the Sierras. That Rambrake was the greatest thing since sliced bread on the downgrades! It was hooked up in the normal truck vacuum system, and the vacuum actuator worked great, never a problem. The on/off switch was mounted on the dash. That was not a problem since I turned it on and left it on nearly all the time. the throttle switch controlled when the brake actuated; only at the idle position. As soon as the throttle was advanced, the brake shut off.
I wish I had the exhaust brake on my current truck, but the budget won't handle it. Maybe if we get rid of the motorhome and get a travel trailer of some kind...

[rhagfo]

Blanco1 wrote:

JIMNLIN wrote:
I would contact EB dealers/mfg with those questions. They can give you answers on current their EB for the 5.9 Cummins. Some of the diesel speed shops carries them and can be helpful for tech questions on your modded 5.9 Cummins.

My '03 Dodge Cummins/NV5600 came with the Jacobs through Dodge Businesslink dealers which gave me a Dodge warranty (long gone now). The EB switch is under the shifter knob. It works in all forward gears (even reverse). It stays on with the clutch in or out....has a hi idle/EB on for fast warm ups.
The Jacobs is vacuum operated so it has a vac inline mechanical pump with a long long belt. I've had no problems with mine for over 300k miles.

Vacuum vs air pressure. Most brands are are operated with a remote air pump which are handy for airing up other things.

Airing up other things like what?
It probably would not properly fill up the tire to the proper PSI would it?

That might be a good selling point to me?

That is the PacBrake bonus, on board air. Pacbrake has the option for shiftier mounted rocker switch, simple flick of a finger.

[Grit_dog]

Exh brake is bolt on for your truck. Air is handy for air bags and bike tires, etc.
if you're really at 500hp I'm surprised you don't have upgraded valve springs.
It's a great addition.