Leaky Exhaust - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Steveiam · 09-07-2019, 11:14 PM

Hey guys I got the MXP SP catback and I noticed some water dripping on the connection. So I tested to see if there's any leak with soap water and both of the connections started bubbling. The donut gasket flange is fine but the other 2 connection isn't. I took it to some muffler shop and they wanted to weld it together but I told them no since I want them in separate pieces if I were take it off.

I feel like I've tightened it enough but could I have overtightened it? Any suggestions or solutions appreciated.

Joon525 · 09-07-2019, 11:32 PM

Undo the exhaust and add Permatex Ultra Copper then reassemble.
A lot of people I know with slip on exhausts use this.

Or just leave it alone. It's tiny in terms of leaks but I can understand wanting that to be perfect.

Steveiam · 09-08-2019, 04:27 PM

Is this considered a minor leak? I'm just wondering if the leak of this size affects the cabin noise.

[ame]https://www.youtube.com/watch?v=d1m38h43AlU[/ame]

ls1ac · 09-08-2019, 05:45 PM

Get a band clamp.

09-07-2019, 11:14 PM	#1
Steveiam Member Join Date: Jun 2019 Drives: 86 Location: Dallas, TX Posts: 65 Thanks: 12 Thanked 20 Times in 12 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Leaky Exhaust Hey guys I got the MXP SP catback and I noticed some water dripping on the connection. So I tested to see if there's any leak with soap water and both of the connections started bubbling. The donut gasket flange is fine but the other 2 connection isn't. I took it to some muffler shop and they wanted to weld it together but I told them no since I want them in separate pieces if I were take it off. I feel like I've tightened it enough but could I have overtightened it? Any suggestions or solutions appreciated.

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09-07-2019, 11:32 PM	#2
Joon525 Senior Member Join Date: Jun 2016 Drives: 2016 BRZ Location: NJ Posts: 369 Thanks: 55 Thanked 166 Times in 108 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Undo the exhaust and add Permatex Ultra Copper then reassemble. A lot of people I know with slip on exhausts use this. Or just leave it alone. It's tiny in terms of leaks but I can understand wanting that to be perfect.

09-08-2019, 04:27 PM	#3
Steveiam Member Join Date: Jun 2019 Drives: 86 Location: Dallas, TX Posts: 65 Thanks: 12 Thanked 20 Times in 12 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Is this considered a minor leak? I'm just wondering if the leak of this size affects the cabin noise. [ame]https://www.youtube.com/watch?v=d1m38h43AlU[/ame]

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