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Trouble getting cat-to-downpipe joint to seal

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Old Sep 13th, 2018, 19:37   #1
AllHailKingVolvo
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Default Trouble getting cat-to-downpipe joint to seal

Hi all,
I fitted a new Lambda sensor today, but the old one was so badly rusted into place I had to remove the cat and use a very lengthy breaker bar to get it to shift.

New Lambda is in, car runs fine, except for the fact that the cat>downpipe joint is blowing. It has the two swaged flange sections with the sealing ring between them, all surfaces were slightly pitted and rusty but were sealing just fine before I dismantled it.

Does anyone have any tips on how to get it to seal nicely again? Or am i looking at a new cat and downpipe to get a clean seal?
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Old Sep 13th, 2018, 21:54   #2
AllHailKingVolvo
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