Geistware, the plane has about 20 flights on it with the muffler in this configuration with no sign of deterioration of the JB Weld. I didn't use the JB Weld as the primary attachment. I think that the reason that it is holding up is because there is a lot of airflow around the top of the muffler. It is not like being in the direct exhaust. The reason that I installed the brace is that the muffler mounting screws kept loosening up. As far as being attached to the engine, for all practical purposes it is since the screw goes through the bracket, engine mounting plate, and then into the firewall. No movement in the bracket. The bracket idea came from using the bracket on my Bisson Pitts style muffler on my ZDZ80RV.

You are right, welding the bracket would have been the best choice. However, I thought I would try it this way before taking it back to the welding shop and spending another $20 bucks.

Bruce, good luck with your 3.2 and Giant Stinger. I would have probably stayed with the 4.2. As Terry says "Too much power is just about right."

Ken