What kind of glue would hold an exhaust deflector on?

Onto what?? If you're talking about a silicon deflector onto an aluminium muffler, forget it. Use a zip-tie.....that's what you're *supposed* to hold it on with anyway. If that doesn't work, try cutting a small groove around the outlet of the muffler, to give the zip-tie something to pull down into.

MrBonk

Polyunobtanium glue. Seriously, no glue is going to hold a silicone muffler deflector on an aluminum muffler. Adhesives will not bond to cured silicone, and only make weak bonds on aluminum.

I guess thats why the airline industry gave up on rivets and switched to epoxy for holding their alumoiinum planes toghether then :-)

Commonly available epoxies soften and fail at 300 degrees Fahrenheit. What the aircraft builders use is very likely not related to hobby/home class epoxy glues.

Drill a hole through the silicone exhaust diverter and into the aluminum muffler stinger. Put a drop of high temp thread locking compound into the "clean" newly drilled hole. Screw in a "clean" sheet metal screw. Voila! Exhaust diverter stays put, at least for a while.

Ed Cregger

The zip tie would be best if you're talking about the typical silicone exhaust deflector. However, if you're going to use a homemade one or perhaps bend one from aluminum tubing, then you can probably glue it on with J-B Weld, which is a high-temperature epoxy.

Morris snipped-for-privacy@hotmail.com

If you're talking aluminum to aluminum, JB Weld or even welding with the "aluminum" welding rod/propane system would probably be fine. If you're talking about the rubber deflector onto the end of an aluminum muffler, tie wraps would be fine (that's what the Dubro deflector comes with), or if you don't want to use tie wraps, go with the high-temp RTV (make SURE it's the high-temp stuff).

MJC

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Put it on and drill a tiny hole through the assembly.

Run a thin length of wire through the hole and twist the ends together.

It will stay on until you decide to remove it.

This sounds like an excellent idea. But to 'improve' on it - wouldn't putting in a cotter pin. be easier?

Actually, if you cure epoxies in the oven, they stand up to high temps pretty well.

True, but you don't buy ALL your stuff at hobby shops, do you? I get as much stuff from builders merchants - blue and white foam, lightweight filler, self adhesive foil tape, many specialised adhesives, tie wraps...I even got some nice velcro strps at a garden center...

However, I was just, as you know, slightly bored and being pedantic. Epoxy is a very fine adhesive indeed for aluminium, if you get a slow set variety and cure it at high temperatures.

I don't think exhaust restriction, in the amounts we are talking about and at the distance from the exhaust manifold, make any difference at all. Do you?

Ahhh wouldn't a clip like that used for heater hoses etc on care be a better method? easily on and off.

David