Homemade Muffler Suggestions

[YetiWoodz]

I want to use a perforated metal tube, baffle cones, steel wool, fiberglass, and sheet metal for the outer shell to make a homemade muffler. What kind of sheet metal would be best? Sheet stainless steel, aluminum, lead, etc. And is sheet metal thick enough?

 

[YetiWoodz]

Also, is it possible to make the muffler create a low, throaty sound? I know a welder/fabricator/mechanic so if it's possible, he can do it..

 

[Just_Doin'_My_Own_Thing]

If I am not mistaken, all of those metals will work for exhaust (not lead though)

That being said I believe that steel would be the cheapest and easist to work with, stainless is also a really good choice

I don't think that low and throaty are the speacialties of a small 2 stroke, but someone may have more experience with building 2-stroke exhaust than me.

Hope you can glean some sort of information from this

 

[Chainlube]

I've made a couple of mufflers, but they were for 4 cycle. I'd imagine you would need an expansion chamber first, and then run into your muffler to get anywhere close to the sound you want. A chambered exhaust will give you low back pressure and the pud, pud pud, sound you're looking for.
Here's a little drawing of the soup can muffler we used to make, just squeeze it in a vise until it's oval. Comes out looking like a mini turbo muffler.
For your case, you'd want a short section of pipe, .063, or .092 instead of soup can, (We were poor back then). Use the diameter of the exhaust pipe to get the size of the muffler.

 

[Street Ryderz]

Also, is it possible to make the muffler create a low, throaty sound? I know a welder/fabricator/mechanic so if it's possible, he can do it..

These are 2 stroke and they will never sound low and throaty it's not able to change the pitch much due to the displacement/size of port,just louder or quieter.A chamber won't change it either as all performance 2 strokes utilize a chamber to control or use the wave speed to aid in cylinder fill,they have small outlet's sized to hold a certain back pressure and when the out let is larger in dia the performance is lost with very little change in pitch.

 

[YetiWoodz]

Ok, thanks so much guys. I have another question, am I allowed to put a half inch thick of activated charcoal packing material that will fill the entire diameter of the muffler (you can't see past it) in order to help block a lot of carbon from entering the fiberglass so I don't have to repack it eventually?

 

[Street Ryderz]

Ok, thanks so much guys. I have another question, am I allowed to put a half inch thick of activated charcoal packing material that will fill the entire diameter of the muffler (you can't see past it) in order to help block a lot of carbon from entering the fiberglass so I don't have to repack it eventually?

I really don't know about that,every time I've tried using charcoal mufflers they eventually get all gummed up.

 

[Just_Doin'_My_Own_Thing]

Have you considered putting steel wool in front of the fiberglass?

 

[YetiWoodz]

Yeah I thought of that. Ok I guess that will work then.

 

[YetiWoodz]

Would wrapping the perforated tubes with spark arrestor mesh help block out the carbon so the packing material lasts longer?