Something loose inside exhaust?

[Toledo Mark]

I have a 99 standard with OEM exhaust, piggies cut, and Honda triple tips.  Is there anything inside the exhaust that can rattle something like a buzz?  (not the buzz bolt). I seem to have a buzz/rattle that sounds like something inside the exhaust but only at highway speed.

[BF]

Yep.  If the previous owner tried to drill out the rear baffles before, it's entirely possible that he lost a drill bit in there.   

[MarkT]

More likely he punched out the baffles with a sharpened rebar, that was common at one time.  What happens is, the sharp tip punches holes in some of the baffles, but knocks others loose.  It looks like a freeze plug, 3/4 in dia. that is now rattling around in there.  I have taken apart many exhausts and found this rattler.  You'll have to get used to it, or send me your exhaust for a mod and that problem will be gone.

[shortleg]

  Also check to see if your chrome covers have rusted loose.
  I mean the clamps that hold them to the pipes.
          Shortleg[Dave]

[Toledo Mark]

Baffles have not been drilled I am the original owner.

[custom1]

I had that buzzing. PO said he drilled the baffles. When I was tapping the holes to replace the piggies I found this.





The exhaust pressure had it pushed right up to the hole. I had to get a hold of it with some needle nose vise grips and cut it in half to get it out.

No more buzzing!

At first I thought it was a plug left over from the manufacturing process, but as said above it might be a baffle that was punched out instead of "drilled". Makes me think there should be a few more floating around in there, but I haven't heard them. If it would be from them making the pipes, you might have the same thing. Maybe get one of those optical scopes and give your bike a muffler-oscopy. LOL

[MarkT]

That's one of the baffles I was talking about.  They are spot-welded in.  It's possible one could fall out of the tube it's in, even without being poked deliberately.  It's really the only thing that could be inside a stock pair of pipes, and rattling.  There's nothing else in there that could come loose.