Modifying this exhaust to anything else

[BrianX128 107]

 

Has anyone changed this exit angle from this type of muffler to literally anything else? My yard has some long stretches where you are normally driving straight west where our wind always comes. Tonight was the first time I actually mowed with it and mowed for over two hours. It did great and my recently jb welded flywheel magnets are still stuck and working but I have the worst headache from breathing exhaust fumes and since this is meant to be my wife's mower and she hates exhaust smell- I gotta do something with it. My garage always smells of exhaust / diesel / something but this was rough for even me.

 

I have a stack on my other mowers that just goes up and out to the side, I'd like to maybe do that as she won't be mowing near any trees low enough to hit anything with a stack, either that or aim it down. I just don't know if that exit is a common pipe ID or OD without cutting it and was wondering anyone had messed with that. I like the muffler itself it's good and quiet. As much as I love my wheel horse, and lawn rov'r I'll be spending 75% of my mowing time with this.. also ignore the way its mounted to the 3 point hitch I since made proper extensions.. first day rigging in this picture to try it. It's actually straight now.

 

[JoeM 7,874]

Just a few things come to mind. Is it running to rich? And maybe just a short add on extension on the existing muffler will help. I know when I switched over to Non E gas, the fumes seem to be stronger. I thought it was just me but the wife brought it up too.

[BrianX128 107]

I'm using non ethanol gas in mine too. Might be part of my issue. It's almost like I could feel the choke need pushed in more when the gas switched over.

[ebinmaine 68,749]

Non E is THE way to go.

It's what these tractors ran when new and all they should ever have.

 

 

I don't have any machines newer than 1974. I'm not familiar with the 300, 400 series so I don't know what you have for an exhaust port in the engine.

 

I do like the idea of an extension pipe if that's a possibility.

 

I have a B80 and a C160 with stacks.

Both point straight up so as to direct the gasses away from me.

 

 

The Case rig is lovely....

 

[WVHillbilly520H 10,374]

2 hours ago, BrianX128 said:

 

I have a stack on my other mowers that just goes up and out to the side, I'd like to maybe do that as she won't be mowing near any trees low enough to hit anything with a stack, either that or aim it down. I just don't know if that exit is a common pipe ID or OD without cutting it and was wondering anyone had messed with that. I like the muffler itself it's good and quiet. 

 

Those Kohlers are standard pipe thread on the exhaust so you could remove the muffler and add some correct size fittings to move it but realize that if you move in too far in any one direction you'll have to support it so as to not break it off in the exhaust port of the head.  Or try one of these https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F191782081418 and route it like on the B and C series of the early-mid 70s.

[tom2p 2,394]

maybe an extension will help

 

a small insert or sleeve clamped or welded to the small outlet pipe - and an extension (pipe) attached to the insert or sleeve 

 

the exhaust exit should then be toward the end of the muffler near front of the hood - similar to an Onan twin or the later Kohler singles 

[Pullstart 63,175]

Could you look for a handicap bathroom style hand rail to cut and slip over that pipe to build a little stack?

[tom2p 2,394]

44 minutes ago, pullstart said:

Could you look for a handicap bathroom style hand rail to cut and slip over that pipe to build a little stack?

only if the proper warning signs are attached to warn old geezers like me not to touch 

 

(seriously)

or just use a piece from the handrail to extend the exhaust  horizontally toward the front 

[SylvanLakeWH 26,104]

 

8 hours ago, pullstart said:

Could you look for a handicap bathroom style hand rail to cut and slip over that pipe to build a little stack?

 

 

I used a 12” piece of plumbing pipe I got for $1.00 in the dents and dings bin at Home Depot.. works like a charm!

[ebinmaine 68,749]

I can try to find a picture of it when I get home. I had a stack on Patriot horse that I will be reinstalling come spring.

 

It's made of a piece of 1- 1/4" bathroom drain pipe. Chrome plated metal of some sort.

I wanted one as tall as I could get it so as to get the exhaust as far away from my face as possible. It's over 20" long.

 

 

[The Tuul Crib 7,338]

10 hours ago, ebinmaine said:

Non E is THE way to go.

It's what these tractors ran when new and all they should ever have.

 

 

I don't have any machines newer than 1974. I'm not familiar with the 300, 400 series so I don't know what you have for an exhaust port in the engine.

 

I do like the idea of an extension pipe if that's a possibility.

 

I have a B80 and a C160 with stacks.

Both point straight up so as to direct the gasses away from me.

 

 

The Case rig is lovely....

 

[The Tuul Crib 7,338]

10 hours ago, WVHillbilly520H said:

Those Kohlers are standard pipe thread on the exhaust so you could remove the muffler and add some correct size fittings to move it but realize that if you move in too far in any one direction you'll have to support it so as to not break it off in the exhaust port of the head.  Or try one of these https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F191782081418 and route it like on the B and C series of the early-mid 70s.

I have one of theses stacks and it sounds 

great ! 

[ebinmaine 68,749]

10 hours ago, WVHillbilly520H said:

Those Kohlers are standard pipe thread on the exhaust so you could remove the muffler and add some correct size fittings to move it but realize that if you move in too far in any one direction you'll have to support it so as to not break it off in the exhaust port of the head.  Or try one of these https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F191782081418 and route it like on the B and C series of the early-mid 70s.

That's the muffler I have on Patriot.

Sounds great.

Quiet. Deep tone.

 

[BrianX128 107]

Maybe I'll try and get a 45* or 90* bend pipe at the local Ace Hardware store that measure's closes to this and has threads on an end and tac it to the muffler that way I can thread in something to the end if need be. I'll just probably have to cut the exit part of the muffler flat maybe back 1 inch so the exhaust isn't getting pushed at an angle in the new pipe, that seems a little bit restrictive.

[tom2p 2,394]

46 minutes ago, BrianX128 said:

Maybe I'll try and get a 45* or 90* bend pipe at the local Ace Hardware store that measure's closes to this and has threads on an end and tac it to the muffler that way I can thread in something to the end if need be. I'll just probably have to cut the exit part of the muffler flat maybe back 1 inch so the exhaust isn't getting pushed at an angle in the new pipe, that seems a little bit restrictive.

the muffler is prob already fairly restrictive - so don't know if that angle (or whatever) would make it much worse ?

 

i like your idea of something with threads 

 

years (and years) ago we welded a threaded sleeve on to the end of a motorcycle silencer so an inexpensive lawn tractor muffler could be easily and temporarily installed (so I could start the bike at our house and ride around the yard without killing the neighbors)

 

[pfrederi 17,959]

Using the Cub muffler as a stack may be an issue with trees etc  i mounted mine aimed down

 

 

[Lee1977 6,857]

The front side of that pipe is completely open it's loosing force and spilling over to the rear. If it were a straight pipe open at the end it might have enough force to get away from the tractor.

[BrianX128 107]

 

I think I'm going to do this and just get a shorter in both length and height 90* bend. Its just 2" pipe there so that should. Easy. Its pretty light and 1 3/8 od pipe will shove over the existing pipe coming out of the muffler if you gently tap on it. I'm still going to either hook a wire through the exhaust clamp or see if I can tac it to the other muffler. It's pretty light too, we'll see if it helps tonight.