Muzzy Exhaust: Difference between revisions

I repacked my Muzzy last night using the manufacturer's kit. When I opened up the can, what little fiberglass was left in it had settled to the bottom half of the can so there was no sound absorbing material at all in the top half. It's no wonder it was so loud. I estimate that there was only about 1/3 as much fiberglass material in there as there was in the replacement kit. With the new packing the bike is quite a bit quieter than it was. For my taste, it's still louder than I'd like, but it's tolerable.  

The repair kit consists of the perforated inner tube wrapped in fiberglass. I ordered this directly from Muzzy last fall. If you could get the right fiberglass material from a muffler shop or auto parts store, there is no reason you couldn't just replace this bit since the metal pieces were all in good shape. To install this, just drill out the rivets and remove the end cap (sounds simple, but there was the small matter of a broken drill bit and what seemed like a lot of blood at the time...). Only one end cap needs to come off and the engine side cap is easier to get off since the mounting hardware provides something to pull on. I removed both caps because I wanted to experiment with some additional baffling at the outlet end.  

You can go to [http://muzzys.com/ muzzys.com] and order the kit. It's about $25. You'll need a pop rivet tool (about $10) and rivets (1/8" diameter, ~3/8" length) to put it all back together. The end caps are stainless steel and are reused.  

I poked around the web and found packing for glass pack mufflers several places for about $6. If I were to do it over, I'd just get the packing. I suspect that auto stores or motorcycle shops probably stock this kind of stuff.  

I've no idea where the old packing goes. I guess it just breaks into small pieces and blows out the tail pipe. I bought the bike with the Muzzy so I don't know how long it has been on there. The bike had about 10,000 miles when I got it and it's at a little over 16,500 now, so it looks like this is something that needs to be done pretty regularly.