[V6-12v] 96 A4Q 2.8 12V cats...

[Austin Franklin]

Hi Frank,

The flexible couplings aren't really couplings, per se.  They are welded on
between the cat and the downpipe, so there is no o-ring there that can be
replaced.  Unfortunately.

Regards,

Austin

> -----Original Message-----
> From: Frank Chapchuk [mailto:chapchuk at hotmail.com]
> Sent: Saturday, September 23, 2006 12:22 AM
> To: austin.franklin at charter.net
> Subject: Re: [V6-12v] 96 A4Q 2.8 12V cats...
>
>
> If it's leaking at the flex coupleing there is a metal O ring that goes
> there. Usually it is pretty well stuck in there so you may just
> have a few
> broken bolts. I had 2 broken but didn't know it until the third and final
> one broke. I ended up drilling out the rusted/broken bolts and repalced
> them.
>
> Last year because the car failed emissions I had to replace both
> cats. I got
> them at discount converters.com. They are pretty high quality (both the
> pipes and the cats). They supply a new O ring but no hardware. I'm really
> happy with them.
>
> Frank
>
> ----Original Message Follows----
> From: "Austin Franklin" <austin.franklin at charter.net>
> To: <V6-12v at audifans.com>
> Subject: Re: [V6-12v] 96 A4Q 2.8 12V cats...
> Date: Thu, 21 Sep 2006 21:12:21 -0400
>
> Hi James,
>
> Interesting info, thanks.
>
> Regards,
>
> Austin
>
>  > -----Original Message-----
>  > From: James Whitehouse [mailto:james_whitehouse1 at yahoo.co.uk]
>  > Sent: Thursday, September 21, 2006 4:54 PM
>  > To: 'Austin Franklin'; V6-12v at audifans.com
>  > Subject: RE: [V6-12v] 96 A4Q 2.8 12V cats...
>  >
>  >
>  > I would not recommend replacing it with a non-genuine cat. The front
>  > downpipes and cats on the V6 also act as the front mufflers (Audi
>  > even list
>  > a 'front muffler for models without catalytic converter' in their parts
>  > system), and none of the aftermarket cats I've ever found do this. The
>  > original downpipes and cat are double thickness walls (about 4 - 5 mm)
> and
>  > the substrate is well padded in. The aftermarket ones are
> usually at most
>  > 1.2 - 1.5 mm) and tend not to be well packed. Not only does
> this increase
>  > the likelihood of quicker failure due to thermal shock/ impact,
>  > but also if
>  > you go down this route, you'll hear crappy cheap downpipe/cat
>  > noise instead
>  > of that V6 purr.
>  >
>  > Either get them to weld in a new flex joint (if the cat substrate
>  > itself is
>  > still good), or get a genuine cat, either new from your Audi
> dealer, or a
>  > good second hand one from a specialist Audi breaker's yard.
>  >
>  > Just my two cents.
>  >
>  > James
>  >
>  >
>  >
>  > > -----Original Message-----
>  > > From: v6-12v-bounces at audifans.com
>  > [mailto:v6-12v-bounces at audifans.com] On
>  > > Behalf Of Austin Franklin
>  > > Sent: 20 September 2006 15:19
>  > > To: V6-12v at audifans.com
>  > > Subject: [V6-12v] 96 A4Q 2.8 12V cats...
>  > >
>  > > Hi,
>  > >
>  > > I just had a garage replace the exhaust from the cats
> back...and after
>  > > they
>  > > were done, they discovered the left cat is leaking at the flex
> coupling.
>  > > So, I need a new left side cat.  Any recommendation of where to
>  > get a new
>  > > one, aside from the dealer?
>  > >
>  > > Regards,
>  > >
>  > > Austin
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