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Old 10-20-2013, 12:01 PM   #1
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Thoughts on exhaust systems

Team,
I can see I will soon be in need of a new exhaust system for the RV. We seem to use it the most going back and forth skiing with a short 100 miles each way. My guess is the chemicals the state uses to keep the roads open and safe are the cause of our exhaust dying before itís time 17,000 miles. Any good suggestions as to where to have it replaced and what type to use? i.e. Banks We live in the Tacoma, WA. area.
I donít see much of a change in how we use the RV for the next 5 years or so. Then we are off to explore the country.
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Old 10-20-2013, 12:21 PM   #2
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Talk to an Exhaust Shop that builds systems for trucks. Maybe Stainless Steel is the answer. Could be pricey though,
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Old 10-20-2013, 12:37 PM   #3
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What has rusted through? I just replaced my exhaust pipe from the muffler, back. It had rusted through in 3 different places, but the muffler and pipe leading into the muffler, was in good condition.

I ordered the part from Lichtsinn Motors (Winnebago dealer with an OUTSTANDING parts department). New pipe,, pipe clamps and drop-shipping from Winnebago came to $185. received on Friday; installed on Saturday. With major help from a friend, it took 2 hours, including fabricating a rear hanger bracket, which it never had.

If I were doing the whole system including muffler, it wouldn't have taken very much longer, as the worst part of the job was seperating the old exhaust from the muffler, without damaging the muffler. That would not have been a concern if I were replacing everything.
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Old 10-20-2013, 02:25 PM   #4
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Stainless doesn't have to cost an arm and a leg.

I bought one of these 100% stainless mufflers last year for about $140 If i remember right. Of course it being 100% stainless its there from now on.

Magnaflow 14773 Magnaflow Universal Diesel Mufflers - Free Shipping on All Orders @ JEGS

Of course you need to get under your RV to see what size the pipe is and length you have room for.
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Old 10-20-2013, 02:54 PM   #5
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Quote:
Originally Posted by Mekanic View Post
Stainless doesn't have to cost an arm and a leg.

I bought one of these 100% stainless mufflers last year for about $140 If i remember right. Of course it being 100% stainless its there from now on.

Magnaflow 14773 Magnaflow Universal Diesel Mufflers - Free Shipping on All Orders @ JEGS

Of course you need to get under your RV to see what size the pipe is and length you have room for.
Question out of curiosity.
JEGS advertises that muffler as
Straight-Through; Wide Open Design
Great Sound -Has A Smooth; Deep Tone


How is the noise level inside /outside compared to stock?
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Old 10-20-2013, 03:17 PM   #6
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30 ft Pace Arrow 1982 454 4 bbl. I had the duel pipes from the mufflers back replaced with stainless. They ran both sides to behind the rear wheels instead of in-front of the wheels and they put nice chrome tips on the ends. It was around $300.00. I can hardly hear it sitting in the drivers seat so I get out and listen sometimes it sounds almost as good as the 64 caddie. On that they replaced from the manifold to the rear all stainless for $750.00 The caddie is 19'6 long so lots of stainless and pretty mean sounding too
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Old 10-20-2013, 03:56 PM   #7
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Go stainless mufflers and replace pipes with stainless if/when they rust thru.
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Old 10-20-2013, 06:11 PM   #8
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Quote:
Originally Posted by Oldme View Post
Question out of curiosity.
JEGS advertises that muffler as
Straight-Through; Wide Open Design
Great Sound -Has A Smooth; Deep Tone


How is the noise level inside /outside compared to stock?
Well mine is a truck chassis and the front of the stock muffler is right under the cab. IT had No tailpipe at all (think dump truck) When I installed it on mine I added about 5 feet of tail pipe and a 45 bend to point it right out in front of the rear axle. Not loud at all. I really did notice a difference at all. This muffler does have packing. The race mufflers do not.
Many over the road truck have straight though mufflers.
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Old 10-21-2013, 09:18 AM   #9
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Quote:
Originally Posted by Mekanic View Post
Well mine is a truck chassis and the front of the stock muffler is right under the cab. IT had No tailpipe at all (think dump truck) When I installed it on mine I added about 5 feet of tail pipe and a 45 bend to point it right out in front of the rear axle. Not loud at all. I really did notice a difference at all. This muffler does have packing. The race mufflers do not.
Many over the road truck have straight though mufflers.

Thanks,
Sounds like you are describing a good mellow glass-pack from
yesteryear.

They were a Perfect sound. Nice and mellow and not raspy or droning.
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Old 10-21-2013, 09:50 AM   #10
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Quote:
Originally Posted by dennis45 View Post
Talk to an Exhaust Shop that builds systems for trucks. Maybe Stainless Steel is the answer. Could be pricey though,

I second that motion.. In your case (Salted roads) SS is the best option.

NOTE: Nobody makes an SS muffler far as I know.. So you will still need a new one every few years.
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Old 10-21-2013, 05:20 PM   #11
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Quote:
Originally Posted by wa8yxm View Post
I second that motion.. In your case (Salted roads) SS is the best option.

NOTE: Nobody makes an SS muffler far as I know.. So you will still need a new one every few years.
Might want to have a look at the online catalogs at Jeg's and Summit Racing. You'll be hard pressed to find a brand of muffler that does NOT have stainless versions. SS available from Dynomax, Borla, Magnaflow, Flowmaster just to name a few.
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Old 10-21-2013, 09:26 PM   #12
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Thanks team,
For sure, I need to replace mufflers back. I think I’ll check on having the pipes extended past the wheels. Today they are in front of them and when skiing you have to be careful not to melt too much snow in front of tires. It can be a big hole.. (o:
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Old 10-22-2013, 07:05 PM   #13
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I second that motion.. In your case (Salted roads) SS is the best option.

NOTE: Nobody makes an SS muffler far as I know.. So you will still need a new one every few years.
There is a link to the one I bought in post #4
Nearly All the exh companys make stainless mufflers now.


I drive a school bus and at the garage where they work on them if they get the tinest hole they buy a new piece of pipe. That mean that they have a pile of scrap 4 inch pipe sections laying about that are 10 feet long with one 1/4 inch hole in one of two bends.
So they gave me a few pieces and I ended up making my exh tail pipe out of that.
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Old 10-22-2013, 07:12 PM   #14
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When I had my 3/4 ton Chevy P/U I used to have to replace the exhaust system about every year. Short trips really cause the system to rust out quickly. Would have been $$ ahead to go stainless the first time.
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