Muffler repack experiments

DrewsBrews · 07-12-2024, 06:45 PM

The first repack (with typical loose fiberglass mat) I tried adding some DIY "baffles" made of eye bolts with a bolt+washers+acorn nut through the center. It worked reasonably well at quieting it down without loosing the tone. But it quickly blew out the packing near the first baffle.

This time I'm going to try repacking by wrapping the tube with stove gasket rope.. Removing the DIY baffles and add a typical DB reducer on the exit. Anyone else tried stove rope before?

Bill Hilly · 07-12-2024, 07:10 PM

Quote:

Originally Posted by DrewsBrews

The first repack (with typical loose fiberglass mat) I tried adding some DIY "baffles" made of eye bolts with a bolt+washers+acorn nut through the center. It worked reasonably well at quieting it down without loosing the tone. But it quickly blew out the packing near the first baffle.

This time I'm going to try repacking by wrapping the tube with stove gasket rope.. Removing the DIY baffles and add a typical DB reducer on the exit. Anyone else tried stove rope before?

Well no wonder it needs repacked. You bought it at Dollar General. LOL

DrewsBrews · 07-12-2024, 08:14 PM

I ran a line of the rope down on top and bottom of the perforated tube before wrapping over it somewhat tightly. Just one layer for the 5/8" rope. This bulked it up to fit the oval sleeve shape. Held down with thin galvinized wire temporarily for install. The wire should corrode through and release in short order allowing the tight wrap to relax and fill the rest of the void. Sealed with usual high temp silicone. DGs are super easy since they use hex screws instead of rivets.

Ended up using about 12ft of the rope for a 12" can.

DrewsBrews · 07-12-2024, 08:29 PM

Quote:

Originally Posted by Bill Hilly

Well no wonder it needs repacked. You bought it at Dollar General. LOL

What I paid for the muffler in the "before times" was certainly Dollar General prices compared to nowadays. Yikes!

dirtbkr188 · 07-12-2024, 09:41 PM

It does look quieter...

Mudflap · 07-13-2024, 05:53 AM

Doubt the rope is going to quiet it much since it's not very porous. I've tried various materials and ended up using stainless steel pot scrubbers.

07-12-2024, 06:45 PM	#1
DrewsBrews Join Date: Jun 2023 Posts: 18	Muffler repack experiments The first repack (with typical loose fiberglass mat) I tried adding some DIY "baffles" made of eye bolts with a bolt+washers+acorn nut through the center. It worked reasonably well at quieting it down without loosing the tone. But it quickly blew out the packing near the first baffle. This time I'm going to try repacking by wrapping the tube with stove gasket rope.. Removing the DIY baffles and add a typical DB reducer on the exit. Anyone else tried stove rope before?
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07-12-2024, 08:14 PM	#3
DrewsBrews Join Date: Jun 2023 Posts: 18	I ran a line of the rope down on top and bottom of the perforated tube before wrapping over it somewhat tightly. Just one layer for the 5/8" rope. This bulked it up to fit the oval sleeve shape. Held down with thin galvinized wire temporarily for install. The wire should corrode through and release in short order allowing the tight wrap to relax and fill the rest of the void. Sealed with usual high temp silicone. DGs are super easy since they use hex screws instead of rivets. Ended up using about 12ft of the rope for a 12" can.
	0

07-12-2024, 09:41 PM	#5
dirtbkr188 Join Date: Aug 2009 Posts: 529	It does look quieter...
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07-13-2024, 05:53 AM	#6
Mudflap Join Date: Sep 2014 Posts: 1,897	Doubt the rope is going to quiet it much since it's not very porous. I've tried various materials and ended up using stainless steel pot scrubbers.
	0