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Hairy muffler

Posted By: njmopar

Hairy muffler - 08/29/22 02:44 PM

It was one of those "What the heck is that!" moments. After a long drive over the weekend in my 02 300M Special, the next morning I came outside to see what looked like hair hanging out of one exhaust tip. Before I pulled on it, I was trying to think of what animal could possibly have this kind of hair? Pulled on it and it kept coming out for like 2 feet. Long fiberglass strands.

If I poke up into the mufflers I can feel that in the center. I assume it is blowing out for some reason or breaking down. Exterior of system is looking fine, but maybe rotting out from inside? Doesn’t seem to change sound or performance or anything.

I thought it was pretty odd.

Attached picture tip1.JPG
Attached picture tip2.JPG
Posted By: IMGTX

Re: Hairy muffler - 08/29/22 04:34 PM

Fiberglass is a common muffler material. Hence the name glass pack.

Odd to see it coming out like that. Honestly I have never seen that before.

If the sound is ok then I wouldn't worry but really odd. If you notice a power loss start looking to the muffler/resonator to be clogged.
Posted By: njmopar

Re: Hairy muffler - 08/29/22 04:41 PM

I always envisioned a short strand fiberglass mat, not like this. I really thought something crawled up in there, since we have been having critters mess with cars at my work.
Posted By: IMGTX

Re: Hairy muffler - 08/29/22 04:57 PM

Last one I cut into had a perforated tube in the center and around that long strands of fiberglass wrapped around the perforated tube.

Exhaust pressure would pump out through the perforations and be dampened by the fiberglass.

They were not real quiet because the majority of the exhaust pulse still had a straight path through the center but they would lower the volume a bit.
Posted By: calmopar

Re: Hairy muffler - 08/29/22 06:00 PM

When you told your car you were taking it to the drags I think it misinterpreted you.
Posted By: 340SIX

Re: Hairy muffler - 08/30/22 08:32 PM

Fiberglass for the win. Every time I hear Fiberglass makes me think of this, Fast forward to 7:00 min
https://www.youtube.com/watch?v=0RD49DYTlrk
Posted By: larrymopar360

Re: Hairy muffler - 08/30/22 09:05 PM

I went to school with a Harry Muffler. Oh wait...
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