ORIGINAL: combatpilot
i think the best idea for repair is to use alumiweld. it is kind of an aluninum brazing rod. I found it at harbor frieght and have tried it for welding together mufflers.
How did that work out? I have considered trying to make a couple mufflers just for fun. I bought a muffler from wacker engines for my Zenoah G38 a couple years ago, and that guy makes some real nice mufflers. I just thought I might experiment withtrying to makemy own sometime if I could find a good aluminum brazing product that would hold up to the heat and vibration.