[quote author=FiverBob link=board=20;threadid=10265;start=0#119552 date=1048456228]<br>[quote author=spots link=board=20;threadid=10265;start=0#119483 date=1048438499]<br>I was under the impression that you could purchase a 3 stage Jake for the engines. 2 4 or 6 cyl retarding. Maybe I am incorrect.<br>[/quote]<br><br>Paul,<br>My dealer only had one brake number for 2003's. That is the one I have. <br>[/quote]<br><br>Sorry to confuse you Bob but I was talking about the larger diesel engines with an engine brake not an exhaust brake. <br>

 

I have just checked the price at a Cummins dealer near San Antonio and was give a price of $1276.67 plus freight and tax for a 4089427 Jake kit. Installation is $999. This is way out of line.<br>Does anyone know of a dealer where I can purchase this kit at a decent price and maybe even have it installed anywhere from Brownsville to San Antonio? McAllen would be ideal for me. Of course the dealer that can sell it to me for $299 gets my order instantly.

 

Mexstan,<br>The $799 minus $500 rebate was a deal offered when ordering the truck. I am not sure that incentive is still even available. I think they offered this before they had any idea what the brake would cost and how hard it would be to install it. I had to wait quite a while after truck delivery to get the brake - - it was not even available yet. <br><br>My gut feeling is you could not get it after taking delivery and maybe it is not even viable today. <br><br>Bob

 

Thanks. It is starting to look as tho I have to forget about a Jake Brake.

 

Mexstan, $999 for installing it (after paying for the kit at $1267) is way out of line!!! Mine was the first one my dealer had ever installed, and it took them just over 5 hours. If the labor rate of $65/hour is charged, that should only come to $325 for the installation of the kit. I happened to get mine the same way FiverBob got his - through the incentive at order time as a commercial order. This was back in December, so I doubt it is still in effect.

 

Thanks guys. Will forget it for now but will be watching for a good deal. Don't really need it at this time, but could later.

 

[quote author=Mexstan link=board=20;threadid=10265;start=15#120304 date=1048625372]<br>Thanks guys. Will forget it for now but will be watching for a good deal. Don't really need it at this time, but could later.<br>[/quote]<br><br>www.mechanicsvilledodge.com was selling them for about $580 or something. Stay away from the installation for $999, my son and I put mine on in about five hours.

 

Mexstan-<br><br>Dieseldude4x4 is absolutely right, if you are even semi mechanicaly inclined and have a reasonable amount of patience it is an easy install. Mine took two Pepsi's and about 4 hours.

 

First thing I'd like to say is Nevada did one hell of a job at explaining everything.<br><br>[quote author=Ruralmedic link=board=20;threadid=10265;start=0#98229 date=1043909672]<br>A jake brake is a compression brake using a special cylinder head, and I think you can control 2, 4, or 6 cylinders at a time. An exhaust brake is a butterfly valve in the exhaust pipe that closes to slow ya down. The latter is what's available for the ISB, and everyone that has them loves 'em. <br><br>The Jacobs Ex-brake is what I believe comes OEM if spec'd. I don't know what the upcharge is new, but aftermarket can be had for less than $600 plus installation. Also, need torque converter lockup device if used on automatic transmission.<br>[/quote]<br><br>The only thing I dissaggree about with the compression &quot;jake&quot; is that you do not need a different head. Jacobs custom makes each compression brake to fit onto the factory heads. The only over the road diesel engine that I know of that you could say uses a &quot;speacial cyclinder head&quot; for it's compression brakes is the Cummins Signature 600. But it's head was speacially designed from the get go to have it's brakes built into it when the engine was first designed. I believe it was also the first one to have 6 settings (there for you can use 1,2,3,4,5, or 6 cylinders for brakeing-- which comes out to 600 braking horsepower), while most either have High and low (3 or 6 cyclinders) or High/Med/low (6/4/2 cyclinders).<br><br>Now Cummins was making there own compression brakes called the C-Brake for a while, but I belive both them and Mack (who had the Dynatard system) both stoped making there own and just started working with Jacobs to make there compression brakes for them.<br><br>The advantages of a compression type brake is that they allow you to use ALL of the engines pulling HP as brake HP. So basically, if you had a compression brake on the HO motor it would have 305 brake HP. But with an Exhaust brake, which is not nearly as efficent, you only get to convert about 60% of the engines pulling power into it's braking power putting you closer to 183 Braking HP with the exhaust brake.<br><br>On the operation of these, yes the Exhaust brake uses a butterfly to basically add back pressure to try and slow the RPMs of the engine up. With &quot;jakes,&quot; you use solenoids that open up valves to allow engine oil pressure to fill chambers with oil that have slave pistons in them. Most of the time these are connected to a companion cylinder's intake valve so that when the intake valve opens it presses on a piston, which increases the pressure in the &quot;jake brake&quot; houseing (which is bolted on over the rocker arms) and this inturn pushes down on the exhaust brake at the precice time give you the braking action.<br><br>If anyone noticed that I goofed up on something please let me know. My books are back in Houston and it's been a couple of months or so since I've read up on the operation of these things so I might have got something backwards or w/e. But I think most of this is correct.

 

Does anyone know if anyone makes a true JAKE for the 5.9 ?<br>I have an E-Brake and would like more braking power.<br>Mine works great but I want a true JAKE.<br>I heard that there is someone in Ok. or Texas that has developed one and it costs around $1200-$1300 for the kit.<br>Anyone heard of this ?<br><br>Thanks !<br><br> : Eddie : 8)

 

[quote author=bulthisl link=board=7;threadid=10265;start=15#147037 date=1055079106]<br>Does anyone know if anyone makes a true JAKE for the 5.9 ?<br>I have an E-Brake and would like more braking power.<br>Mine works great but I want a true JAKE.<br>I heard that there is someone in Ok. or Texas that has developed one and it costs around $1200-$1300 for the kit.<br>Anyone heard of this ?<br><br>Thanks !<br><br> : Eddie : 8)<br>[/quote]<br><br>I have never seen a true jake for an engine of less than 10L displacement. Not saying that there is no such thing, but it would be VERY rare.

 

Bulthisl: In your opinion was the e-brake worth the money? I would like to know, what % of brake action do you think yoou gained? When I first started driving truck I had a Williams brake (ie.) e-brake and didn't think much of it. I'm just thinking out loud.

 

bpk ;<br><br>The brake was well worth the money for me.<br>I live in hill country and haul farm equip. all the time.<br>Mine will slow me down from 55 mph to 40 mph while holding back #15,000 [ not including truck ] back in 3rd going down a 7~8 % grade about 1/2 mile long.<br>And thats not touching the brake pedal at all.<br>I haul ALOT heaver loads but this is a load I haul on a reg. basis for compairison.<br>If I were buying another one it would not be a BANKS.<br>It works great but no better than a JACOBS as it was advertised to do.<br>A buddy has the same truck as me only with a JACOBS and I can't tell the diff. except the price was higher for my BANKS.<br><br>Hope this helps.<br>Good Luck !<br><br> : Eddie : 8)

 

I have a question for you e-brake guys. Say you're towing downhill such as what eddie described. I see that the e-brake is very effective and gives you considerable braking power even without touching the brake pedal. this might sound dumb, but why would you want to do this (except to test your e-brake)? seems that you would want your prodigy or whatever brake controller to apply brakes on the trailer itself as well -- more tires helping you stop. Eddie I realize you were just describing the performance of your e-brake and were not advocating any particular driving technique. I just wanted some of you towing/e-brake experts to describe how you use the e-brake in conjunction with existing trailer brakes and brake controllers such as the prodigy.

 

When you run heavy loads as I described before [ or heavier ]<br>You have alot piece of mind that when you do use your service brakes that they are not hot and will hold. <br>Or you don't have to use your service brakes nearly as hard.<br>That way they will last alot longer [ which saves you money and time replacing them ] and when those dingbats like we have around here pull out in front of you thinking that you can stop 25 ~ 30,000 lbs. as quick as you can 6 ~ 7,000 lbs. <br>My E-Brake has saved my butt more than once. <br>If you ever get the chance to drive a truck with one you WILL want one . <br>If your ever around Ky. give me a call and we'll load mine up and you can try it out. ;D<br><br> : Eddie : 8)