How to fix leak where J-pipe enters muffler?

Jon March

Member
Black soot, a bit of exhaust snell..
..and noise

Even tho i cut “slits” in the entry-collar, the stainless U-clamp does not seal as well as it apparently needs to.

Gerry Obara added a flex-union and triangle-junction plate to where they meet to allow flexing and apparently doesnt leax exhaust.

Any other ideas in what i can do? if i dont want to bring it to have that done?
(That area definitely has flexing: i dont imagine tthere is hi-temp, removable wrap/ tape that stays flexible that would seal it...would probably always come unwraveled...)

(The black residue you see is from the burned adhesive from the silver aluminum hvac tape i tried--but some exhaust gases jetted out even from under that, so i removed it, leaving charred stickum residue)
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