Originally Posted by daverbmxer
I have a FMF muffler that is rattling because the rivets at the tail end are loose. Is it as simple as drilling out the old ones and riveting in new ones? Are long or short rivets better? Any danger of the end bit falling inside the muffler and working its way back into the engine?
You might want to look at rivet nuts.... http://www.google.com/search?q=pop+r...w=1280&bih=573
....Then you can remove the end cap if you need to. It's a blind nut that you can install from the outside like a pop rivet. There are several different styles to choose from. My local Ace hardware has them and instalation tools for just a few bucks.