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Old 01-13-2012, 08:31 AM   #1
cuong-nutz
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Repacking muffler

I am thinking about repacking my muffler but do not understand the dynamics of how to repack it. What's the purpose of steel wool? How thick of fiberglass or packing material do I need? Do I pack the material thick and tight or loose? How often should I repack the muffler? I'm trying to quiet down my exhaust.

Edit: is there somewhere locally where you can be the stuff to repack your muffler?

Last edited by cuong-nutz; 01-13-2012 at 08:35 AM.
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Old 01-13-2012, 08:46 AM   #2
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Quote:
Originally Posted by cuong-nutz View Post
I am thinking about repacking my muffler but do not understand the dynamics of how to repack it. What's the purpose of steel wool? How thick of fiberglass or packing material do I need? Do I pack the material thick and tight or loose? How often should I repack the muffler? I'm trying to quiet down my exhaust.

Edit: is there somewhere locally where you can be the stuff to repack your muffler?
Personally, I don't WANT to be the stuff to repack my muffler.

On the other hand, it's not rocket science. Not too tight, not too loose. Pack it like you think it should be, then temporarily reassemble without rivets and listen to it.
If you like it, done. If not, repeat.
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Old 01-13-2012, 09:12 AM   #3
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it's simple. buy some repacking material, take apart muffler and wrap the packing material around where the old used to be. (there will be some old stuff left) and put it all back together.
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Old 01-13-2012, 09:18 AM   #4
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Doing is not the problem. I'm just tryi to figure out the reasoning for the use of steel wool and material.
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Old 01-13-2012, 09:20 AM   #5
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no steel wool in there. it is fiberglass(mostly). it basically absorbs sound waves to reduce dB's.
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Old 01-13-2012, 09:36 AM   #6
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I'm just over thinking things. Need to find me a spl meter.
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Old 01-13-2012, 09:39 AM   #7
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Not sure if I'd use steel wool, the moisture will rust that stuff pretty quickly, and will likely leak out of the seams.

All the big brands sell repacking material, I've seen it on eBay from people like FMF, Yoshimura, Two Brothers, etc etc.
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Old 02-03-2012, 11:48 PM   #8
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guys guys....

The steel wool is needed to keep the fiberglass from flying out the muffler.

That pipe in the center of the muffler (looks like a cheese grater) needs to be wrapped loosely with steel wool. If you want the muffler louder, then you wrap it tighter with more wool. if not keep it semi-firm and not too much to where you can no longer see the pipe.

Take your glass and pack it in there semi-firm as well. It needs to be completely full or else it can move around the muffler, break up, and fly out.
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Old 02-03-2012, 11:51 PM   #9
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mevans24 is the only person that has posted in here that knows what he is talking about, and now i have lol. everythong stated above is correct
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Old 02-03-2012, 11:53 PM   #10
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my busa mufflers did not have any steel wool. it was fiberglass only
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Old 02-05-2012, 12:57 PM   #11
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Not all mufflers are like that. Some have a different fiber that helps keep it in place.
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Old 02-06-2012, 10:48 AM   #12
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I've seen some people say to use steel wool because it does not burn up. BUT, it will be louder because it doesn't absorb the waves as easy.

If you buy a kit for your muffler, it'll be the correct amount to wrap around the hole-y core and you won't need to worry about how tight it should be (as opposed to buying generic material and cutting to fit).
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Old 02-06-2012, 02:33 PM   #13
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Stainless steel wool?
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