SPS 62 and PAC BRAKE?

[CHolman]

I'm going to be getting a PAC BRAKE at the end of the month and was wondering if anyone with a SPS 62 has installed a Pac Brake and how hard it was to install or if there was any fitting issue's... ? Where did you mount the air tank? Thanks.

 

[onestackdram]

I helped my buddy install his 62 and pac brake about a year or so ago on his 05. Now granted we also did an ats manifold at the same time. But it wasn't to horrible bad and I don't rember having an issue with things fitting. It was made alot easier becuase there was one of us on the ground and the other under the hood. But as far as a fitting issue i can't say i remember there being one. Also make sure you talk to someone at pac brake. they are well aware of aftermarket turbos like the phatshaft series and can help make sure you get what ever you need to make the installation as easy as possible.

 

[CHolman]

Also for those that have the Pac Brake, how do you like it? Have you ever tried or had a Jacob's Brake?, if so how do they compare? I know the Jake brake is Vac and the Pac brake is air accuated, but I'm trying to do as much home work as I can before I buy...

 

[TCDiesel]

Here is a link https://www.turbodieselregister.com/forums/showthread.php?t=144182 (Post 9)

also get the auxiliary tank,T&C always wires around the ECM,Sure we can argue this all Day,just remember that if the ECM fails do to some type of surge or spike it was not your Brake, The ECM Bypass will give the owner/driver more options, unless it is a 2006 model,The warm up option (with ECM Bypass) here in MN when-0 is left to the operator for disengagement.

 

[daytripper63]

Any brand exhaust brake is priceless.

I had a turbo mount Pacbrake and I just upgraded to a Super B special turbo and the Turbo mounted Pacbrake will not fit so I have had to drive the last 2 weeks with out it and its killing me, I leave my pac brake on all the time around town or freeway or towing and now without it I have to use my brakes again, but I ordered a new inline Pacbrake yesterday so I should be back to normal soon

 

[staarma]

I have the Pac brake and an HTB2. You will have to grind about a 1/4" off of the end of the air cylinder mounting bracket or it hits the compressor housing.



I wired mine up using the pins to the ECM. It works great. It watches rail pressure, water temp and throttle position. It is great for warming up because it will stay on even with the 1000 RPM high idle engaged and it will stay on until the water temp reaches 174 degrees then shut off by itself. I also got the shifter mounted switch. Nice option.



The only truck that needs the ECM bypass are the 05 48RE trucks. Why, I don't know other than maybe it has something to do with the convertor lock or lack thereof.



We put a Jacobs on Dad's 06 and we like it real well too. It is much quieter because it runs off of vacuum instead of hearing the air compressor come on but that's about the only difference in operation. The Jacobs would allow for a much bigger turbo though without any modification.

 

[wcjp]

Just installed my PacBrake last weekend. Haven't towed anything yet. I also bought the PacBrake shifter mounted switch.



Something I didn't like about the PacBrake install was finding a "switched" power source under the hood on the firewall. I didn't want to splice into the wiring knowing the 06' computer is sensitive to changes in resistance. The latest TDR mentioned this splice will draw 10amps. Not sure if true but, didn't want to find out. I bought a $3 fuse extender "thingy". At the fuse panel under the hood on the driver's side near battery I pulled the 10amp fuse for the seatbelt. Inserted the fuse extension. The bottom fuse is the original circuit. The top fuse is the new circuit. The fuse extension has a wire for splicing to whatever. I added a third relay from the extension to provide a "switched" power source.



I wired through the ECM. Didn't know if I was going to like the 2sec delay. It seems to be a very fast 2sec.

 

[TCDiesel]

wired mine up using the pins to the ECM. It works great. It watches rail pressure, water temp and throttle position. It is great for warming up because it will stay on even with the 1000 RPM high idle engaged and it will stay on until the water temp reaches 174 degrees then shut off by itself. I also got the shifter mounted switch. Nice option.



The only truck that needs the ECM bypass are the 05 48RE trucks. Why, I don't know other than maybe it has something to do with the convertor lock or lack thereof



No software for 05. In colder climates the bypass allows the truck to ramp up/down with the brake engage (continuously). If you are OTR and sleep in the truck or truck needs to run for long periods of time the ramp option also allows the truck to maintain 180/190 without continuous higher ramps over the coarse of time the fuel saving alone are enormous. not to mention engine saving,the only lost to the brake if used continuous is change intervals, and this varies considerably.

 

[TCDiesel]

WCJP, that's a great way. Independent source.

 

[JLibert]

my pac mounted to my bullet with no modifications necessary. You may have to adjust some of your exhaust hangars, as the brake/elbow has to be rotated slightly from the stock position.



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[CHolman]

Thanks for all the input... I can't wait to install that baby! It's shouldn't be to bad because it's a 04 305/555, 6 speed. I was just worried because it's a after market (larger turbo), but when I did my ATS exhaust manifold and turbo, I also put the 600 series cast elbow that is a true 4" in and out vises the 305 elbow that is 4" to 3. 5", so I bought the 04. 5 and newer PAC BRAKE... Do you think there will be a issue with the ECM being that I got a PAC BRAKE for a 4. 5 and newer truck and mine being a 305?

 

[mattymac]

heres a pic of my SPS 66 and pacbrake.



https://www.turbodieselregister.com/user_gallery/displayimage.php?&photoid=20470&width=3

 

[staarma]

Thanks for all the input... I can't wait to install that baby! It's shouldn't be to bad because it's a 04 305/555, 6 speed. I was just worried because it's a after market (larger turbo), but when I did my ATS exhaust manifold and turbo, I also put the 600 series cast elbow that is a true 4" in and out vises the 305 elbow that is 4" to 3. 5", so I bought the 04. 5 and newer PAC BRAKE... Do you think there will be a issue with the ECM being that I got a PAC BRAKE for a 4. 5 and newer truck and mine being a 305?

I wouldn't think there would be any issues at all. The compressor should be the same and that's all the ECM runs the power for. As far as the butterfly valve and air cylinder goes, it is probably the same too but the valve is probably a little larger is all.



I have a 5" on mine so I couldn't rotate the elbow much and maintain clearance. I'm not sure I would have been able to anyway even with the stock exhaust.

 

[CHolman]

I can hear my waste gate blow off when I'm going through the gears pretty good through my 6 inch stacks, so I anxious to see what a exhaust brake is going to sound like through the pipes!

 

[jelag]

If your new turbo will take the existing elbow that's on your truck than the pacbrake will install with with no problems... . and the pacbrake is designed to flow more exhaust than the stock elbow... if your stock elbow won't fit your new turbo than the direct mount exhaust brake might not work... don't worry... we've supplied 4" and 5" in line brakes for those with custom turbos...



We suggest that you connect to the ECM for one reason... the ECM allows for a slight delay so that the fuel rail pressure can fall off before the exhaust brake comes on... Cummins wouldn't have put this part of the software in the computer if it wasn't important... so we suggest it...



The PXRB is available and has the ability to hold the back pressure for a longer amount of time as the engine slows... see their web sight at www.pacbrake.com and search for the info on the C44045... . this kit also comes with a captive air tank, and hose for filling small tires... . we use the air system on our trucks to supply air bags on the rear, and air horns... .



If you have specific questions let me know... . we can help... Have a great day...

 

[CHolman]

heres a great pic of what my turbo area looks like, what I'm working with... http://www.dieseltruckresource.com/pics/showphoto.php?photo=24320

 

[staarma]

I didn't catch the fact that you had an ATS manifold on there before. That's why I had to trim my bracket. The ATS moved everything towards the firewall about 3/4". It was just enough that I couldn't just bolt everything together. About an extra 2 minutes with the 4" grinder and everything fit well.



You will be fine I'm sure. There shouldn't be any big obstacles for you to overcome. If you have troubles or need help I can get some good pics of my setup and exactly what I did. You will like the sound of the brake. It isn't quite like a jake on a big rig but it is super cool nonetheless. Good luck.

 

[Diesel Gunner]

I love my Pacbrake. Would never own another truck without one. It only took two trips with the TT and no ebrake to convince me.



The only disappointment that I have had has been a few months ago the thing started sticking closed. The brake gets used everytime that the truck gets driven, however the truck does not get driven daily. When I called Pacbrake I was informed by their "warranty guy" that this was common with trucks that don't "work" daily and that there was no way to fix this. I was told that I needed a new unit for $580!



Well, that wasn't going to happen. I spoke to Jim (jelag) and he instructed me to remove the unit, clean it, and lubricate it with the Pacbrake lube that he sent me and guess what? Yea, the lil' bugger works just like it did when it was new. Thanks, Jim.



If any of you are in the area and have the same problem, give me a call because the bottle of exhaust brake lube will probably service about 100 brakes.

 

[GaryFuller]

Where did you find the fuse extender "thingy"

 

[jjdiesel]

CHolman... . so how did the brake fit? Did you have to do any trimmin'?