ORIGINAL: mirwin

Here's an alternative that I've used with great success on my O.S. and Magnum 4-strokes.

Purchase a small can of Rustoleum aluminum brush-on paint (it's even aluminum colored). After cleaning the threads on all the mating surfaces, brush on a coat of the paint on each surface. Let dry. Assemble. The heat of the exhaust system combined with aluminum in the paint creates a good, tight bond.

I agree with MinnFlyer too; make sure your prop is balanced perfectly. But sometimes you just get an engine that shakes. In that case, I fasten the muffler to the fuse to (1) minimize muffler movement and (2) avoid losing it if it comes all the way off.


Mike