djmp69

I have a plane with a DLE 55 on it, and after losing the bolts to the stock muffler and a Jtec, Igot new ones and tried blue locktite. That helped a little, but they still backed out, so I tried the red stuff. Same result, a little better than the blue but it still loosend. So I tried more red stuff with lock washers. No change. I finally broke down and safety wired the bolts, and of course that worked like a charm.

NOW.

I have another plane I'm going to be putting the 55 on again. The cowl was already cut for stock DLE 55 muffler. Besides that, from the measurements, a Jtec wrap around wont clear the firewall (the plane has no box). So I'm wondering if anyone had any ideas as to how to keep the bolts from vibing loose? You can't safety wire them because the holes in the muffler they go through keep the bolts recessed. I could put a plate over the holes and safety wire the bolts that way, but then the bolts will be so long I'm concerned they will break.

I'm sure there;s a simple solution out there, I just haven't come across it yet, so please bear with me.

Thanks!