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Anyone ever built a muffler?

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Old 11-15-2006, 01:31 AM
  #31  
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Default Re: Anyone ever built a muffler?
Originally Posted by Heath
Wow, took me several times of reading your first sentence and I still hardly understand it.
Anyhoo, while that muffler design may be nice and quiet it's also restrictive as hell. You have both the surface area of the screen material and the brillo pads obstructing the gas flow. If you don't mind hindering performance its "ok" at best.
You dont pack them tight, you pack in just enough. You can always take the brillo out. The mesh as 5/32" holes. Those ones we use on a 602CID BBF in a boat wet exhaust that breaths 1100+ CFM and havent had a single problem with restriction. We tried about 5 other methods and thats the most effective that we have come up with.
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Old 11-15-2006, 10:34 AM
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Default Re: Anyone ever built a muffler?
Creativepunka, I'm working on "pre-silencers" for my 12a peripheral port to keep that beast quiet. Any pics of the perforated pipe? Do most muffler shops carry it?
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Old 11-19-2006, 12:35 AM
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Default Re: Anyone ever built a muffler?
Originally Posted by Heath
Creativepunka, I'm working on "pre-silencers" for my 12a peripheral port to keep that beast quiet. Any pics of the perforated pipe? Do most muffler shops carry it?
how do you put holes in a pipe?

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Old 11-19-2006, 11:16 AM
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Default Re: Anyone ever built a muffler?
Yeah, I've been that route. Do you have any idea how long that takes when making two 24" pre-silencers?
Purchasing a piece of already perforated pipe would make that job so much easier.
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Old 11-20-2006, 04:36 AM
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Default Re: Anyone ever built a muffler?
Go to your local motorcycle dealership and ask for a muzzys silencer re-packing kit. Perf. pipe, and fiberglass packing =$18.00 For the win! Standard silencers are 2" I.D. and 18 inches long.
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Old 11-20-2006, 10:49 AM
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Default Re: Anyone ever built a muffler?
Fiberglass packing usually dies quickly on a rotary. Gotta go with ss or lava rock.
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Old 11-20-2006, 01:20 PM
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Default Re: Anyone ever built a muffler?
Go for what works.
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Old 11-22-2006, 05:30 PM
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Default Re: Anyone ever built a muffler?
----, chopping up an apexi WS would make me cry. Did you buy the turbo sized muffler, Mine is the straight thru design and has excellent flow.
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Old 11-23-2006, 03:23 AM
  #39  
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you can buy "expanded" steel. its predrilled in an alternating hole pattern about 1/8 apart. its sheet metal, so you just have to roll it and weld. on another note, where can I get some rock wool locally? I've read about it (its basically cotton candy in rock form) and it sounds like it can handle heat like a badass.
 
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Old 11-23-2006, 08:50 PM
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Default Re: Anyone ever built a muffler?
Originally Posted by fysh
you can buy "expanded" steel. its predrilled in an alternating hole pattern about 1/8 apart. its sheet metal, so you just have to roll it and weld. on another note, where can I get some rock wool locally? I've read about it (its basically cotton candy in rock form) and it sounds like it can handle heat like a badass.
---- that, you don't need packing to make a muffler.
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