I have a couple minor ehaust leaks and was thinking about using the JB Weld. There is no extra noise due to the leaks or anything. I just usually wind up in water halfway up the block when i'm wheeling and just want to make sure there's no way water can get into the engine.

Ican't afford a new exhaust sytem right now so i'm not looking for that noise.

All comments and opinions are welcome... with the exception of the above stated lol.

Thanks

 

I did that on my rambler when the heat tube for the choke was leaking. It worked but it did take about a week for odd smells to go away when it was being driven.

 

You are aware that JB Weld is epoxy, right? And that epoxy is plastic, right?

 

I remember buying some grey-colored pookie from AutoZone a long time ago that's meant for patching small holes in your exhaust. It's heat resistant, which epoxy-based JB Weld isn't. I remember it took days to dry, though, a pain for a daily driver.

Check that it's not the exhaust gaskets, too. Those are a cheap and more reliable fix, if that's where the problem is.

 

Cool. About how long ago was that and did the weld break down over time or is it still holding strong?

 

JB weld will patch an exhaust just fine. I used it to hold my exhaust together when my clamps fell off and wheeled the hell out of it with no problems. it lasted longer then tanny, rear axle, motor and pretty much the truck.

 

by the way, ceramic is also technically plastic based.. so plastics can hold up to heat.

 

I'm pretty sure I have a gasket leak too because I had smoke in the engine compartment around that area the last time I seafoamed the plenum... Matter of fact, that's how I noticed all my exhaust leaks =)

 

I tried JB weld on the muffler/tailpipe connection. It failed within the week and smelled horrible for a couple weeks afterwards. Muffler tape and bailing wire worked much better and was working for at least 4 months up until I sold the truck.

 

Heh, that must've been 20 years ago. Check this out, AutoZone's offerings:

http://www.autozone.com/autozone/cat...Exhaust+Repair

 

I used that second one from the AZ lineup. It's a little tin full of pookie as said before. It worked great on multiple exhaust leaks I've had to repair. The big thing I learned with it though is clean your application beforehand, and right before you're ready, you wipe it down with a moist rag, don't soak it just moisten the surface, apply more than you think you need and by all means WAIT for it to fully cure or you'll be doing the whole thing over again. The shortest timespan for cure was at least 24 hours. Everything in question has held up just fine.

 

Hey Betelnut,
I'm in Austin too. Keepin' it weird, are we?

 

I'd just find someone w/ a Mig welder and throw some tack welds on it. Done deal.

 

I had a steel hanger go on my stainless exhaust, JB weld lasted about 2 min, had to get the hole welded

 

although it works good on my radiator mount column

 

I used JB weld on my the exhaust manifold of my chevy 20 van. It couldant take the heat, melted off and smelled horrible doing it. but i find that it works well on pretty much anything after the cat, less heat back there.