Make your own Exhaust Brake DIY Do it Yourself

[Polaraco]

OK I decided to make my own exhaust brake,

3/8 drill rod
8" piece of exhaust pipe
hardened 3/8 X 1/2 SS bushings
1 block of 1 1/4 X 2 1/2 steel block
1 air cylinder
1/8 plate for disc
Piece of 1/16 for the air cylinder mounting and stops
Miscellaneous hardware.

Objective is 50 PSI of back pressure. The idea is to make something simple anyone can build on a budget


I looked at several designs already made and decided to avod the potential mistakes. One of them uses Bronze bushings. Even the oil bronze is only good to 600 degrees. I'm using Stainless and some high temp silicon grease (Arch oil 1200*F) So far, I have less than a hundred so far. All I need is some 3/16 and 1/4 for flanges.

EDIT I scratched the pipe idea. Harder to mount and more expensive.


I turned down the threads on the one end. It was tough to do. I wanted to make a good looking unit. I think I may let the other end stay the way it is. What a PITA that was. The pipe is +/- .040 in any direction! No precision what so ever. Plan B. Leave it

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[Canadiandiesel]

$100 could of went towards nozzles and you would be closer to better economy

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[F350Cummins]

3/16 and 1/4 plate or rod?

i can assume plate from the list. May be able to bring you some wed.

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[F350Cummins]

Other option what diameter disk do you want? I could cut a 3/16 disk off a piece of roundstock

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[Polaraco]

$100 could of went towards nozzles and you would be closer to better economy

I agree. I've been accumulating this stuff over time. 200 is easier to reach than 2200. That's next though. I have the front end to do, the stuff has been here for months. 2 weeks is the plan. That's a priority too

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[F350Cummins]

Steve, I have access to the material, if you answer what you need I can bring it Wednesday

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[Polaraco]

You're coming here Wednesday?

Piece of 3/16 flat stock to make the flapper with. And that piece of 4" pipe you were going to bring. I found a way of cutting the costs on this thing. No flanges

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[Polaraco]

I learned something new. Pressure cutting on a lathe. However, I broke my last carbide tipped cutter so I had to worry the metal. I ended up about .010 more than I wanted. I'll deal with it.

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[F350Cummins]

i have some hss cutters around too if you need them

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[Polaraco]

I'll take cutters. But I need some carbide. This stuff is not meant to be machined

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