My muffler is NLA - what to do?

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sansouci
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Location: Southampton NY

My muffler is NLA - what to do?

Post by sansouci »

While replacing a tire with a persistent leak, my muffler is making the pfffft sound so I found a small hole where the tube after the cat meets the rear muffler. Realoem cites the part as 18129068555. And the dreaded NLA notation for my 84 633 Vin 6997510.
I may be able to jamb JB weld into it or have a muffler shop try to weld it up.

Any good suggestions for a replacement? It's an autobox and vroom vroom is not the desired outcome.
Thoughts?
Attachments
Opening is on the top and bottom of the pipe
Opening is on the top and bottom of the pipe
BMW mullfer 2.jpg (600.71 KiB) Viewed 3741 times
BMW Muffler 1.jpg
BMW Muffler 1.jpg (858.92 KiB) Viewed 3741 times
Last edited by sansouci on Wed Dec 06, 2017 7:36 pm, edited 1 time in total.
Sansouci
84 E24 633Csi Auto, Bronzit/PearlBeige 6997510
93 E32 740il M60 Auto, Alpenweis/Ultramarine
60 528i M30 5-speed Green/Beige (crushed)
71 240Z 4-speed White/Blue (rusty & sold)
65 396 Chevelle 4-speed, Marina Blue/Black (stolen)
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raykoke
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Location: Savannah GA USA

Re: My muffler is NLA - what to do?

Post by raykoke »

Based on your description, I bet it can be welded.

Post a pic.

Cheers,

Ray
'85 ///M635
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sansouci
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Joined: Mon Jul 08, 2013 10:52 pm
Location: Southampton NY

Re: My muffler is NLA - what to do?

Post by sansouci »

If the muffler shop can't do it as they may see too much rust, can I seal it up with tin solder which can be laid on with a hand held torch?
Sansouci
84 E24 633Csi Auto, Bronzit/PearlBeige 6997510
93 E32 740il M60 Auto, Alpenweis/Ultramarine
60 528i M30 5-speed Green/Beige (crushed)
71 240Z 4-speed White/Blue (rusty & sold)
65 396 Chevelle 4-speed, Marina Blue/Black (stolen)
kevmills67
Posts: 21
Joined: Wed Dec 13, 2017 4:51 pm
Location: California

Re: My muffler is NLA - what to do?

Post by kevmills67 »

a good welder at a muffler shop should easily be able to do that.
Good luck with it.
Ronnie Wilson
Posts: 239
Joined: Fri Nov 18, 2016 11:40 pm
Location: Liverpool uk

Re: My muffler is NLA - what to do?

Post by Ronnie Wilson »

Hi guys.

Why not try liquid metal. It's a two part epoxy which you work together between your fingers. Apply around hole and it becomes solid. You can use it on castings to drill and tap it. I used it on my back box. Ground it down and painted it. Job done.
Ronnie
Liverpool uk.
1986 635csi.
Bronze Beige Metallic.
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