Piper J3
Well Known Member
While doing Annual Condition Inspection I found a crack in the exhaust exit end of the muffler. I advertised on VAF classified thread for a used muffler and got several responses. I ended up buying a complete exhaust system with only 70TT and decided to replace the muffler and also the exhaust stacks. Several of my exhaust stacks exhibited extreme wear on the spring hooks. This condition is not easily noticed because a bead of high-temp RTV is placed over the spring loops to prevent vibration. I installed Stainless Steel springs early-on when the original springs started breaking. The springs themselves don’t show much wear. My guess is the springs are harder material than the muffler hooks. My exhaust has 750TT.
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