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Old 01-04-2019, 08:46 AM   #1
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GenTuri and Exhaust Tips

I won't be back at my coach for 3 weeks, but I'm trying to plan my GenTuri setup so I can use it on both my generator and AquaHot exhausts - depending on situation.

On my coach - and I'm assuming most CC's - the ends of my exhaust tips are flared? or rolled? so it's outside diameter is bigger.

Will I need to cut off the tip - or use an adapter - to use a GenTuri?

Also, is there some play in the angle that the GenTuri goes up? One of my window awnings overlaps my AquaHot exhaust by roughly 8 inches - and it's about 8 feet above the exhaust tip. Could I angle the GenTuri exhaust to move over 8 inches in the 8 feet so I can get past the awning?
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Old 01-04-2019, 11:51 AM   #2
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On our '04 Intrique I have to remove the chrome flare tip on the Aqua-Hot and Gen exhaust pipes in order to attach GenTuri.

It may be a bit difficult the first time, depending on setscrew deterioration and dimpling to exhaust pipe.
I angle the GenTuri tube as it goes toward roof, anchor with vacuum pad device to side of coach.
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Old 01-04-2019, 12:12 PM   #3
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The Gen-Turi will come with some different sized adapters. You may need another if your Aqua Hot and generator exhaust pipes are the same size. These are available at most auto supply stores. The adapter will be clamped to your existing pipe so having the same size pipe to fit the Gen-Turi would be necessary.
A muffler shop could supply an adapter also. If you go there ask someone to cut the flare off your exhaust pipe with a pipe cutter. These cutters leave a smooth edge and cut straight. A hacksaw could be used but won't leave as smooth a job behind.
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Old 01-04-2019, 12:29 PM   #4
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I concur with Letmgrow's comments. For my generator exhaust I had to remove the original chrome tip then install the fitting provided with the Genturi. The "pinned connector" piece for the Genturi stays clamped to the generator exhaust pipe. You'll want a second 'pinned connector" for your water heater.


Out of curiosity, why the need for a Genturi for your Aqua Hot system? Since the Aqua Hot conceivably runs intermittently, why the need for a Genturi exhaust tube? The only time I use my Genturi is for "boon docking" during an LSU football weekend and the generator runs continuously each of those weekends. Because RV lots at LSU are "cramped" and every RV runs its generator continuously, LSU requires that generator exhaust discharge above an RV's roof line to assure safety of the thousand plus Tiger faithful in each RV lot.
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Old 01-04-2019, 02:36 PM   #5
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" LSU requires that generator exhaust discharge above an RV's roof line to assure safety of the thousand plus Tiger faithful in each RV lot."

LSU needs to do some studying on diesel exhaust. Diesel exhaust is much heavier then air. When sent up, all it will do is come right back down and if you have open windows, it goes into the coach.



Cummins has a paper out stating that the exhaust stacks should not be used on their equipment because of the high risk of asphyxiation.
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Old 01-05-2019, 07:27 AM   #6
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Hmmm... Interesting about the diesel fumes being heavier. Maybe once it's above the roof it dissipates enough so even though it settles back down, it's at a much lower density?

My reasoning for wanting it with the aqua hot is that most of the campgrounds will have electricity so I won't need the generator... But if I need quick or lasting hot water, I will need the aqua hot... Which exits directly into the neighboring sitting area.
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Old 01-05-2019, 04:14 PM   #7
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Originally Posted by TTD View Post
Hmmm... Interesting about the diesel fumes being heavier. Maybe once it's above the roof it dissipates enough so even though it settles back down, it's at a much lower density?

My reasoning for wanting it with the aqua hot is that most of the campgrounds will have electricity so I won't need the generator... But if I need quick or lasting hot water, I will need the aqua hot... Which exits directly into the neighboring sitting area.


Thank you for your concern about future neighbors!
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Old 01-05-2019, 04:51 PM   #8
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On our 18 London Aire we use a U exhaust clamp over the chrome tip to hold pipe and place. Do not need to take the exhaust tip off. Can add extensions to pipe to get it exhaust over the roof line. Added a 18 inch extension to get it a foot above roof.
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Old 01-05-2019, 05:33 PM   #9
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I use two PCs of alum gutter down spout cut to get the length you need.very cheep in the east. Two discount suction cups. All under $20. Flex pipe or old aluminum dish mount cut to size.
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Old 01-07-2019, 09:35 AM   #10
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Originally Posted by tom chelbana View Post
On our 18 London Aire we use a U exhaust clamp over the chrome tip to hold pipe and place. Do not need to take the exhaust tip off. Can add extensions to pipe to get it exhaust over the roof line. Added a 18 inch extension to get it a foot above roof.
Not sure I understand about the U clamp? I am guessing that the the tips in the GenTuri box will not fit over my chrome tip... how does U clamp help? Is the chrome tip going over the GenTuri?

Any photos or clearer explanation would be great?
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Old 01-08-2019, 05:18 AM   #11
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Not sure I understand about the U clamp? I am guessing that the the tips in the GenTuri box will not fit over my chrome tip... how does U clamp help? Is the chrome tip going over the GenTuri?

Any photos or clearer explanation would be great?
It would be my guess the Gen-Turi adapter slid over the chrome tip because the tip wasn't flared or possibly the adapter slid inside the chrome tip.
The flare serves no other purpose than for looks. It can be trimmed off.
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Old 01-10-2019, 03:58 PM   #12
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Originally Posted by dons2346 View Post
" LSU requires that generator exhaust discharge above an RV's roof line to assure safety of the thousand plus Tiger faithful in each RV lot."

LSU needs to do some studying on diesel exhaust. Diesel exhaust is much heavier then air. When sent up, all it will do is come right back down and if you have open windows, it goes into the coach.



Cummins has a paper out stating that the exhaust stacks should not be used on their equipment because of the high risk of asphyxiation.
Every home I lived in that had a oil furnace (diesel), the exhaust went up the chimney!
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Old 01-11-2019, 04:49 PM   #13
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Allow me to share my chemical engineering / petroleum refinery view of engine exhaust composition. Wikipedia actually does a good job of presenting exhaust gas composition from both gasoline and diesel engines -->
https://en.wikipedia.org/wiki/Exhaus...icle_emissions

This article has a table showing exhaust gas composition for both gasoline and diesel engines. The compositions, as expected, are essentially the same as the combustion products from burning hydrocarbons (natural gas or propane or gasoline or diesel) are carbon dioxide (CO2), water, some small amount of nitric oxides (NOx) and nitrogen (nitrogen enters an engine with air and passes through the engine unchanged). One of the small differences for diesel engines is the particulates (soot) in the exhaust. The particulates are the result of the heaviest hydrocarbon molecules in diesel not fully combusting leaving carbon (soot) as a by-product in the exhaust gas.

All hot exhaust gases will rise into the atmosphere as soon as they leave the tail pipe to eventually become fully dispersed in the atmosphere. The use of a Camco type exhaust extension is to assure the hot exhaust gas is dispersed into the atmosphere well above ground level to assure people are not directly exposed to exhaust gases.

Likewise, the exhaust (also called flue gas) from the furnace in your homes discharges above the roof line to assure those exhaust gases do not affect people on the ground / in your home.

I hope you find this info useful.
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