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Exhaust system patches that work?


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Do any of the exhaust system patches work? There are many products, I am surprised in this day and age there are not products that would seal leaks.  Are there any epoxies, wraps or other products that help that?

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The pipe in back of the cat converters on my 97 Outback sprung a break; I picked up a couple high temperature fixes, will update on results.  I'm sure industry has all types of fixes in addition to welding.

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I have used, to good effect:

 

Aluminum duct tape backed by hose clamps (just make sure the clamp forms a 'heat sink' over the hole)

small holes plugged with the white hardening sealant

1/2 sections of pipe (or bent sheet metal) over a blob of the sealant, held in place by hose clamps

 

The small holes I've dealt with have usually been from a welded-on hanger ripping out. Good pipe around a rusty strip or hole the size of a dime or so.

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I once used high temp furnace caulk in a tube. Odd location and not accessible as the defect was set back below a reinforcing plate where two pipes join so being able to squirt this stuff in was a real plus. It's been in there at least 2 years and is still holding. 

If you can lather some of this stuff on and reinforce it with some sheet metal and a clamp, you should get some mileage out of it.

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Can I ask what company you are referring to? My 06 Legacy was a northern car.... my exhaust pipes are very rusty...

No company exactly, you have to do some legwork. Post on forums, in the parts areas, that you're looking and call places on www.car-part.com. Even if places don't list exhaust (some places may not list it) all you need to do is find some places offering parts from one of those vehicles and ask if they have the exhaust.

 

For instance Look up an engine for your then call those places for exhaust.

 

Two of my current Subarus have Colorado and California exhausts on them.

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No company exactly, you have to do some legwork. Post on forums, in the parts areas, that you're looking and call places on www.car-part.com. Even if places don't list exhaust (some places may not list it) all you need to do is find some places offering parts from one of those vehicles and ask if they have the exhaust.

 

For instance Look up an engine for your then call those places for exhaust.

 

Two of my current Subarus have Colorado and California exhausts on them.

Good to know. I didn't think it was legal to resell cat converters?? maybe due to high incidence of theft for quick cash as I recall. Friggin' opiod epidemic.

Edited by brus brother
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