How often should you replace a muffler?

Seangie · February 13, 2016, 01:34:02 AM

And what are the symptoms identifing a muffler needs replacement?

Thanks.

-Sean

dvrasor · February 13, 2016, 01:36:40 AM

When you have to say WHAT a lot

Dave

luvrbus · February 13, 2016, 01:41:29 AM

You start losing power,the engine temperature will increase and the black smoke increases,I would just use a resonator in place of the muffler.I see someone snap a photo of your bus in El Paso and posted it on the Silver Eagles Bus Owners F/B page today lol we know where you are

Seangie · February 13, 2016, 02:09:19 AM

Quote from: luvrbus on February 13, 2016, 01:41:29 AM
You start losing power,the engine temperature will increase and the black smoke increases,I would just use a resonator in place of the muffler.I see someone snap a photo of your bus in El Paso and posted it on the Silver Eagles Bus Owners F/B page today lol we know where you are

Cant hide anywhere these days. Big brother always watching... haha

Cliffy - do you have a part number for said resonator?

Tikvah · February 13, 2016, 02:26:22 AM

I priced a muffler for my MCI a few weeks ago and was totally blown away by the price. It was over $500 for the muffler, straps, and connectors.
It's just a tin can!

WHY !?!?!?

Seangie · February 13, 2016, 02:35:46 AM

Quote from: Tikvah on February 13, 2016, 02:26:22 AM
I priced a muffler for my MCI a few weeks ago and was totally blown away by the price. It was over $500 for the muffler, straps, and connectors.
It's just a tin can!

WHY !?!?!?

Dang. It was less than that for my new fang dangled spunky starter which probably weighs twice as much and is mostly copper and has moving parts.

luvrbus · February 13, 2016, 02:36:35 AM

Just buy a pc of 5 in flex pipe and clamps to get you to your destination it won't be that loud and will sound cool with the Jakes

TomC · February 13, 2016, 02:52:30 AM

On my transit, when I turbo'd it, I discovered the muffler to be too stuffed up to work. When I pulled the muffler, it was this huge 5ft long affair. Course transits they wanted them as quiet as possible. The replacement is a Donaldson 5" oval muffler with both inlet and outlet on the same end. It is considered to be a high performance turbo muffler with very little back pressure. When I got it, I could look down into it and the muffler only had a single baffle between the two sides. Since the bus has a built in up exhaust, I wasn't too worried about noise. It now has a nice tone (going through tunnels). I like the muffler so much, I bought the same one for my truck conversion. The muffler should cost less than $200. Good Luck, TomC

TomC · February 13, 2016, 02:57:27 AM

On my truck, it has the original muffler with over 1.2 million miles on it. A good muffler should last a long time. Good Luck, TomC

Seangie · February 13, 2016, 03:21:12 AM

Quote from: TomC on February 13, 2016, 02:52:30 AM
On my transit, when I turbo'd it, I discovered the muffler to be too stuffed up to work. When I pulled the muffler, it was this huge 5ft long affair. Course transits they wanted them as quiet as possible. The replacement is a Donaldson 5" oval muffler with both inlet and outlet on the same end. It is considered to be a high performance turbo muffler with very little back pressure. When I got it, I could look down into it and the muffler only had a single baffle between the two sides. Since the bus has a built in up exhaust, I wasn't too worried about noise. It now has a nice tone (going through tunnels). I like the muffler so much, I bought the same one for my truck conversion. The muffler should cost less than $200. Good Luck, TomC

Tom,

Do you have a part number for that fancy thang?

-Sean

lostagain · February 13, 2016, 03:27:47 AM

This is the resonator I am using:

https://catalog.donaldson.com/productDetail/en/A/M090072?productId=14176&skuId=s16749&_requestid=1652161

It replaces the muffler I took out, which was about 4 feet long by 2 wide, oval, and heavy. It saves a lot of space. We don't hear it from inside the bus. But it is fairly loud from outside. I love it. My wife, not so much. Going through Mobile AL on I10, I turned the Jakes on with the window open going down in the tunnel. That was fun... The bus runs better with it. A little cooler, no smoke out the pipe anymore. The less restriction, the better.

JC

lostagain · February 13, 2016, 03:29:50 AM

The thing is empty, nothing in it. Makes me wonder if a straight pipe would sound any different...

JC

luvrbus · February 13, 2016, 03:32:06 AM

Sean the muffler on your Eagle is a special muffler you won't buy it for 200 bucks it is made by Nelson, you could probably make the Donaldson work but it will cost you more in the end

Tikvah · February 13, 2016, 03:33:56 AM

Quoteyou could probably make the Donaldson work but it will cost you more in the end

Why would it cost more in the end?
We can buy that Donaldson on Ebay for $75 http://www.ebay.com/itm/M090072-Donaldson-5-Inch-Resonator-/171199432142?hash=item27dc4805ce:g:4iQAAMXQL99Sb7U5&vxp=mtr

Maybe run two?

Tikvah · February 13, 2016, 03:43:45 AM

Does it matter what we use?
Can I use any 5" muffler?

like this: http://www.ebay.com/itm/Flo-Pro-Max-5-Stainless-Steel-Performance-Diesel-Muffler-24-Body-M12774-/161673812201?hash=item25a48298e9:g:mO4AAOSwPhdVLo0L&vxp=mtr