Ok, just wanted some clarification and everyone's input. Just trying to better understand these 3.

1)What is the difference between a "jake" brake, Exhaust Brake, and the decelerator that US Gear offers? (i know our 'maxes can have either the EB or Decelerator)

2)Why do these Exhaust brakes void our warranty? From the little stuff I know on these,they dont look harmful in the slightest.

Thanks for any input.......

A Jake brake is a Jacobs Engine Brake and is designed for the big truck's as it sit's on top of the valve train and when it's turned on it actually holds open the exaust valve to release the air out of the cylinder's to help the engine slow down faster which in turn helps the truck slow down. When you hear a truck slowing down and hear all the extra noise from the exaust, that's the Jake brake. They are rated in retarding horsepower, which is usually pretty close to the engine horsepower output. So a 500 hp engine might get 450 Retarding hp with a jake. They really help save on the brakes, I do a lot of city driving, stop and go, with my big truck and I went 300,000 miles with the original brakes.

A exaust brake basically shuts off your exaust pipe (almost) and forces the exaust to stay in the cylinder's and that in turn forces your piston's and rods and crank to slow down because it has to recompress the air again. The trick is to close the pipe enuf to slow you down but not to much to stall the engine or possiblly bend a rod or break some other internal part, which is why I'm sure the OEM don't like them too much.

And I don't know about the decelarator. Sorry

Diesel Dragon

oh i see, so a jake brake is internal where an exhaust brake is external?

Yes, the jake brake sit's under the valve cover(s). And is expensive, around 2500 or so on a 6 cylinder big truck engine.

And the exaust brake is usually added in some where after the turbo, under the truck

The jake brake slightly opens the exhaust valves when the piston is near top dead center (where ignition normally occurs). On the upstroke, the piston compresses the air in the cylinder to 1/15th its original volume. This creates a lot of drag on the engine. The Jake Brake then releases the compressed air, and the energy stored in it, before it can push back on the piston during the downstroke. In addition, releasing the compression prevents any fuel in the cylinder from igniting. So, you've got drag on the upstroke, no power on the downstroke.