D-180 Muffler

[3WHDave 60]

I am looking for the best muffler for my D-180.  The original mufflers were not on the machine when bought and all the literature show two vertical cylindrical units.  I have found a Walker on Amazon with a 90 degree inlet-port.  My concern is that the Walker inlet port measures 1.375 on the I.D. an a standard 1 inch pipe is 1.315 (or a bit less).  It doesn't sound like much, but 0.060 is difficult to compress a tube.  Do I simply add some copper tape/muffler wrap/ect. and expect it to be right?  On a footnote, I did purchase a couple of "puck" mufflers with a 1" pipe thread, and they do fit.  But I would like to be closer to OEM if possible.  Any an all recommendations are appreciated.

[ebinmaine 72,676]

I don't have the answer for you but I'd like to see what the other folks say.....

[WVHillbilly520H 10,376]

5 hours ago, 3WHDave said:

I am looking for the best muffler for my D-180.  The original mufflers were not on the machine when bought and all the literature show two vertical cylindrical units.  I have found a Walker on Amazon with a 90 degree inlet-port.  My concern is that the Walker inlet port measures 1.375 on the I.D. an a standard 1 inch pipe is 1.315 (or a bit less).  It doesn't sound like much, but 0.060 is difficult to compress a tube.  Do I simply add some copper tape/muffler wrap/ect. and expect it to be right?  On a footnote, I did purchase a couple of "puck" mufflers with a 1" pipe thread, and they do fit.  But I would like to be closer to OEM if possible.  Any an all recommendations are appreciated.

Funny you found a Walker muffler (I worked at their only aftermarket facility in the USA for 22 yrs), Any ways if you do buy these. You can take a hack saw or Sawsall and cut the end 4 places (2 cuts) about 1/2-3/4" deep this will allow the pipe to compress... This actually done with machines for slip fitting joints but not all sizes are done this way.

[oliver2-44 10,717]

@dells68 recently bought and put some mufflers on his D.  Hopefully he will chime in here on what he bought and did.

[dells68 7,499]

56 minutes ago, oliver2-44 said:

@dells68 recently bought and put some mufflers on his D.  Hopefully he will chime in here on what he bought and did.

Right there Jim.  I found a set on eBay that we’re NOS Nelson mufflers with 1” pipe fittings on each end.  I think they were a universal muffler, but they are close to the size - slightly smaller - to the originals.  I didn’t want to go to Lowe’s with Corona going around, so I used some 1” pipe conduit I had around and welded it to the original elbow and extended the tip below the grille with the same pipe.  Sounds really good.  Best option is to just search eBay.  I did see some Onan generator mufflers for RVs that would work well too I think.

[ebinmaine 72,676]

Those look similar in size and shape to the Cub mufflers that are popular as mini stacks.

Just have the inlet and outlet going the same direction.

Nice-looking work there Dell.

[pfrederi 18,670]

From experience you need to block off the end of the exhaust pipe and drill a bunch of holes on one side of it like the original.  Other wise you will have 2 brown circles in your grass anywhere you stopped with the engine running for more than a couple of seconds....I was filling in a trench with my FEL right after I put on some very similar B&S mufflers. Circle after circle in the grass along the side of the trench where i stopped to line up an dump the bucket in to the trench. Didn't show up for a day or so and it took me a bit to figure it out at first I though I had a hydro leak or something.

[pfrederi 18,670]

First picture is an original muffler second is how I fixed mine up.  No more burn marks in the grass....