Exhaust leak

C

Corphish

:

83 RX-7 Gsl, 2000 Mazda Protege LX, 2011 Mazda3 Sport i

• Oct 22, 2017

• #1

Anyone got any good fix or short term fix to an exhaust leak? I'm pretty sure it's where the two exhaust flanges meet.

 

J

Jackie chan

Member

:

Pro5

• Oct 22, 2017

• #2

New gasket. But if you don't have one, I personally have had great luck with copper rtv!

 

P

pcb

The Diagram Dude

:

2002 MP5

• Oct 22, 2017

• #3

Jackie chan said:

..., I personally have had great luck with copper rtv!

Click to expand...

I've done that too... It works great.

The exhaust pressure likes to get under the patch and blow it off, so I would goop it on then wrap it up with wire then goop more on top.
Reinforced patch.. It's good for over 700 F...

 

Last edited: Oct 22, 2017

H

horseflesh

:

02 protege5 ES 5dr

• Oct 22, 2017

• #4

Corphish said:

Anyone got any good fix or short term fix to an exhaust leak? I'm pretty sure it's where the two exhaust flanges meet.

Click to expand...

This is my fix of choice. It can be used with mesh to cover large holes or seal your flanges. Once cured claims to be a "metal like substance".

 

P

pcb

The Diagram Dude

:

2002 MP5

• Oct 22, 2017

• #5

horseflesh said:

This is my fix of choice. It can be used with mesh to cover large holes or seal your flanges. Once cured claims to be a "metal like substance".

Click to expand...

I've used that stuff too... The heat of the exhaust pipe "cures" it.
I didn't like it too much because it hardens like ceramic then it cracks and crumbles off... It's kinda sloppy to work with and is caustic as well.

The copper silicone stays flexible and there is gonna be movement where the flanges meet.