Question to all you JB Weld users

[DaMaN]

Will it work to patch a small rust inhibited hole in a muffler or exhaust system? If so how long will it last? Is this stuff to be used in small amounts or will it last better if I put on a generous amount?

[eGoCeNTRoNiX]

You'd be better off using some Aluminum tape or muffler tape than you would using JB Weld. Not sure if it will work with the muffler or not.. GL!

eGo

[DaMaN]

well the hole is in a crevice so tape = no good

[Pugsley]

just get a new one.. they are only like 19 bux unless you got some fancy ass car.

[Lmandrake]

I used it to patch a small hole in a tailpipe once and it lasted about two months. But the hole was small and had solid metal all around it. I had some extra from something else I did and just smeared it on. Worked for a while...

[DaMaN]

I have holes in the muffler and the Y pipe from the manifold. The Y pipe has a inline built in catalytic converter so it is very expensive. Just want it to last until I can save up the money fop all.

[Ken6PPC]

I seriously doubt that JB Weld will last very long that close to the manifold. The pipe will simply get too hot for JB. It releases it's bond at about 400*F, although the web site says it works up to 500*F.

http://www.jbweld.net/coldweld.html

Look on the bottom right-hand side of that site. It says, "Not recommended for use on manifolds, exhaust systems, and other engine components which normally operate at temperatures above 500º F."

I haven't used this epoxy, but it is supposed to be good for higher temperatures. I don't know how well it would fill a hole though.

http://www.hightemperatureadhesives.com ... 20data.pdf