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Old 11-23-2019, 09:11 AM   #1
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I find my Oasis system to be loud so adding a muffler

So first thing I noticed was the Oasis furnace can be pretty loud.

It simply has a nice 2 inch exhaust pipe but no muffler, I inquired about this with IRT and they stated that Newmar used to install mufflers and didn't know they don't anymore.

I installed there optional Inlet muffler ( as simple PVC pipe with Foam inside) which helps some but nowhere as much as this does on the exhaust side.

https://www.summitracing.com/parts/j...iABEgLUD_D_BwE

I have tested this back to back by simply slipping this over the tailpipe and it does a great job of knocking down the noise

I will be installing this plus a nice stainless turn down tip and stainless clamps and hangers not a fan of the U clamps

Moving to the Rod weld on with rubber isolators.

Ted.
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Old 11-23-2019, 09:40 AM   #2
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Don't know when that changed. I have a muffler on mine.
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Old 11-23-2019, 07:22 PM   #3
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I think 2017/18 they changed.
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Old 11-23-2019, 08:04 PM   #4
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I used these hangers and also wrapped the exhaust pipe. With the turbo muffler it should be fairly quiet.
https://www.summitracing.com/parts/STW-TH2SC
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Old 11-23-2019, 10:16 PM   #5
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I used these and was able to use existing bolt holes

https://www.summitracing.com/parts/pye-tphv6
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Old 11-24-2019, 04:01 AM   #6
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Vickie 4369 thanks for starting this thread. I have been considering adding a muffler I think this one will do the trick. If possible, could you post a few pictures of your finished project. Also can you recommend a clamp to connect the muffler to the exhaust pipe at each end? I have not done much exhaust pipe work before.

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Old 11-24-2019, 05:51 AM   #7
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Mine is a 16 and it has no muffler, but it will now. Thanks!
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Old 11-24-2019, 07:58 AM   #8
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Quote:
Originally Posted by FLSteve View Post
Vickie 4369 … thanks for starting this thread. I have been considering adding a muffler I think this one will do the trick. If possible, could you post a few pictures of your finished project. Also can you recommend a clamp to connect the muffler to the exhaust pipe at each end? I have not done much exhaust pipe work before.

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Originally Posted by lostinfla View Post
Mine is a 16 and it has no muffler, but it will now. Thanks!
I will post pictures of both my generator exhaust and Oasis exhaust when completed.

Yesterday I removed the hanger at the end of the generator pipe, cut the pipe back and added a Stainless tip from Gibson.

It does not need the hanger at the end there is practically no weight there, the 1 hanger at the generator frame is more than enough.

Then unbolted the hanger in the middle of the pipe at the generator frame, and moved it up 1 hole, WOW what a difference.

The pipe was just too low and ugly before this mod.

I was working on the Oasis exhaust as well and added in a few more Ideas.

I feel this exhaust is also too low, so, I am removing the stub pipe from the Oasis and shortening it 1 inch then will reinstall the exhaust pipe with muffler and new hangers with Stainless tip.

I cut one slip fit end off the muffler and welded the stainless tip on the muffler then taped off the tip and painted the muffler black.

I didn't hear the Oasis system 1 time last night with the muffler temporarily slipped on the shortened pipe.

My bedroom is right above the driveway where my MH is parked so I was hearing it every time it came on.

Whether is crappy today do I will pick up this project next nice day.
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Old 11-24-2019, 12:21 PM   #9
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I tucked up both exhaust pipes, tight to the body and changed the tips to SS. I don't care for the angle cut tips and changed mine to what they call the rolled pencil tip. They look so much nicer now. Before, they looked like they were broken and about to fall off.

It sure would be nice to get a decibel reading before and after the exhaust install.
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Old 11-24-2019, 04:06 PM   #10
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Originally Posted by Dutch Star Don View Post
I tucked up both exhaust pipes, tight to the body and changed the tips to SS. I don't care for the angle cut tips and changed mine to what they call the rolled pencil tip. They look so much nicer now. Before, they looked like they were broken and about to fall off.

It sure would be nice to get a decibel reading before and after the exhaust install.
I used Turn downs for even more sound control

Ted.
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Old 11-25-2019, 09:25 PM   #11
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Just wondering if the muffler you selected will create any backpressure? I relocated the Oasis exhaust from the factory installation which was by the generator to directly opposite the oasis. It is certainly more noticeable and I would love to quiet it down. I was told by ITR the automotive mufflers create too much back pressure.
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Old 11-25-2019, 09:59 PM   #12
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Quote:
Originally Posted by srrobe View Post
Just wondering if the muffler you selected will create any backpressure? I relocated the Oasis exhaust from the factory installation which was by the generator to directly opposite the oasis. It is certainly more noticeable and I would love to quiet it down. I was told by ITR the automotive mufflers create too much back pressure.
None what so ever, it is the same design they sell except the one I selected is made from better material called aluminized steel which is 3 times more corrosion resistant.

And 1/4 of the price.

I also found it is necessary to drill a 1/8 inch hole at each end of the body on the bottom to release condensation.

When I was testing it just slipped on the end of the pipe it filled with condensation, there was about a pint of water in it with just 1 night of use.
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Old 11-25-2019, 11:38 PM   #13
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Thanks for checking this out. I think I'll get one on order
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Old 11-26-2019, 08:46 AM   #14
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Quote:
Originally Posted by srrobe View Post
Just wondering if the muffler you selected will create any backpressure? I relocated the Oasis exhaust from the factory installation which was by the generator to directly opposite the oasis. It is certainly more noticeable and I would love to quiet it down. I was told by ITR the automotive mufflers create too much back pressure.
srrobe I kind of did the same thing to mine so I could install a sewer hose tube under the wet bay area. Just need to make sure I now have enough length of pipe run to install the muffler in this short section.

FLSteve
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