Weld on my catalytic converter

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Karthur
Posts: 2
Joined: Sun May 31, 2020 9:00 am
Car: 2010 Maxima
2012 Maxima

Weld on my catalytic converter

Postby Karthur » Sun May 31, 2020 8:39 pm

I tackled fixing an exhaust leak on my daughters 2010 Maxima yesterday. I have been hearing the leak especially on cold starts but it has continually gotten worse. It had gotten so bad that I could smell exhaust fumes when sitting in traffic.
What I found when I took off the converter was really shocking. I was suprised to find that the upper flange was not even welded to the converter. I mean there was a weld there, but the weld did not penetrate the flange at all. I will try to post a picture of the weld.
I am sure that if mine is like this then there are many more out there with this same issue. This is an expensive repair if you have to take it to a shop. This in my opinion is a factory defect that could case someone to die from carbin monoxide poisoning.

If your car has an exhaust leak then this may be your problem. This is on the left side of the engine (next to firewall).
20200530_140819_1.jpg
No penetration into flange
Thanks


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AZhitman
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Joined: Mon Apr 29, 2002 2:04 am
Car: 72 240Z RB25, 63 Bluebird RHD, 63 NL320, 67 WRL411, 67 SPL311, 68 510 SR, 77 620 SR20, 89 Pao, 97 D21, 98 S14, 11 LS460L, 12 Titan 4x4.
Location: Surprise, Arizona
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Re: Weld on my catalytic converter

Postby AZhitman » Mon Jun 01, 2020 9:36 pm

Wow. initially, when I looked at it, I thought, "That's a spinning / floating flange, it's supposed to look like that."

Nope. You nailed it. That's a terrible welding job!

Now the problem is, it's full of corrosion, so welding it now will be a huge challenge.

Karthur
Posts: 2
Joined: Sun May 31, 2020 9:00 am
Car: 2010 Maxima
2012 Maxima

Re: Weld on my catalytic converter

Postby Karthur » Tue Jun 02, 2020 4:57 am

The rust on the flange was not problem for my grinder :)

User avatar
AZhitman
Administrator
Posts: 70595
Joined: Mon Apr 29, 2002 2:04 am
Car: 72 240Z RB25, 63 Bluebird RHD, 63 NL320, 67 WRL411, 67 SPL311, 68 510 SR, 77 620 SR20, 89 Pao, 97 D21, 98 S14, 11 LS460L, 12 Titan 4x4.
Location: Surprise, Arizona
Contact:

Re: Weld on my catalytic converter

Postby AZhitman » Tue Jun 02, 2020 6:31 pm

Good deal - Well-handled!


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