Vertical or horizontal exhaust?

Hell Yes.

Vertical always. Higher than your cab. Always. Your life depends on this.

Horizonal is weed burning, but also a very good way to inflict exhaust poisoning on you and everyone next to you while you sleep... perchance to wake up dead someday.

I could not tell you how many times I pass out on the cat walk while hooking trailers in a cloud of CO2 instead of oxygen. It's stupid to have weed burners.

 

How would you do this??
All cars are weed burners.
I've been sitting and have the truck next to me with exhaust flowing in my cab from stacks above their cab.
The advantage with a horizontal is no tarp on a smoke tarp load.
Less weight and wind resistance from less pipe, neither is really much, if, any advantage.

 

Cars have a specific specification on how to route exhaust to the far rear and away from the cabin.

Trucks do not. They point the weedburning exhaust straight down BELOW YOUR sleeper bunk. It's the stupidity of the design.

Yes trucks do have good ventilation with vertical stacks above the sleeper. But you learn also that you sleep UPWIND of all the truckstop where possible when choosing a spot. Sleeping in ANY low spot on the property reveals the CO2 from all the trucks collect there. Then you are sick and wonder what the hell happened. Which is why I like to sleep on a mountainside, the CO2 flows downgrade away. And cold air sinks to generate a breeze that way to push my exhaust away in the night.

Wind resistance is immaterial from pipe. If you are stressing over the very tiny amount of resistance offered by a very areodynamic shape that presents pretty small frontage to the incoming air of your rig down the highway, then you have issues in life greater than I can help you with when you consider the amount of square right behind the pipe with that trailer. Remember everything is 13.6 feet and inches.

Let me repeat one more time from the first 5 years running weed burners and being sick for it... don't do it. A old style engine warming up in the winter from a cold start emits a blue cloud that does not move much because there isnt much wind at 2 am if there is no storm. You stand there in that cloud hooking up. Hoping you don't pass out.

Once engine warms to spec temp, the cloud goes away. Especially when the turbo begins to sing.

Then I decided to quit in the 5th year and move to companies without weed burners after I got properly CO2 poisoned in a weed burner. Ended up in the ER. Doctor told me that pulse ox was too low and put me on O2 a while. That fixed it. He did not say what the value on that 02 was. But researching standard of care, it must have been in the high 80%

 

Different truck. All different. CO2 poisoning. Not a good thing.
Not all is 13'6" I run flatbed. SOOooo. I did recently change my truck from 2 stacks to weed burner. The exhaust ends between the rear axles. Plus it was cheaper than replacing the "Y" pipe and both mufflers.
The point about cold air and exhaust. I am pretty sure the exhaust will be a higher temperature than the ambient temperature in any situation. Thusly making it rise.
If your cab is in that flow of air you will get some in your cab.
No stress about air resistance, that is what I said, just used different words. NOT much advantage, if any.

 

Flat bed is understandable. We had straight stacks.

Imatelling you... if others do not also tell you.. you are going to regret going weedburner.

If it is wind resistance you worry about with a huge full condo cab, look into maybe a volvo midroof design the vertical stacks are there but not as big.

As far as the flatbedding is concerned. If you recall, the drag on your tarps if the wind gets under neath of it will reduce your RPMs by about one hundred sometimes. Your fuel mileage is tossed until you add double or triple the bungee cords to keep your tarp down. I ran covered wagon in addition to flatdeck and have had that problem before in stiff storm winds on the east coast and later in the unceasing western prarie winds.

 

I will concede the rising exhaust temperatures.

It has to rise. You want it to rise away from you.

Your weedburner has now made a cloud around you. There you are in the bunk with your upper windows open and you pull fresh air in to cool or heat your sleeper and cab. Sorry buddy you are pulling in your own gas chamber. Do you not understand?

The problem again becomes a inversion layer that sets in above you about 20 feet in the atmosphere sometimes. You will see the exhaust collect there, cool and then sink. Remember Co2 is not detectable by humans until enough of your red blood cells are erased by this killer pretending to be oxygen and your oxygen levels fall towards coma and then death. Some people like to go out by exhaust in sucide becuase they go to sleep when really tired. It's painless.

 

Cheaper to run weed burners. No need to chrome it all out....lol

 

The exact types of trucks I had to quit using. Local daycabs. It does not matter if the sleeper or not.

Im not your enemy. I am not smart. I can only argue what I can see is a problem once I accept a debate or converstation about a problem with a goal to solve the problem.

If a weed burner seems cheaper in maintenance, then you will probably discover that there is a coating all over your ABS wiring, your sensors and everything under that frame around the ground exhaust. That adds time and trouble to your mechanic who has to scrape, rub or clean before he can ascertain the problem in today's over wired electronic computer goddesses that throw a fault or alarm over a frayed or burnt wire.

Finally but not last, winter time is the worst time to have a weedburner. If you sit somewhere and snow accumulates around it... that's it. In our time we made beds the night before with them so that the patch around the drives will ice over once it cools from exhaust pounding near the drives. We would move back and forth a few times in the night to maintain that bed as new snow falls and fresh ice pool accumulates around the drives from the weedburner.

In short. Don't be stubborn trying to save a few dollars with a weedburner that has so many problems with it's very design. Again I have invested or lost a few years of my life dealing with the ####### things and choose vertical exhaust always. Until such time possibly in the future there is no emissions at all, just a freaking 10 ton battery under your cab and all electric. How you like that eh?