[Shotimes] rattling cat

[Ian Fisher]

Just to add to this:

Ford cats are actually some of the highest flowing
cats of any OEM car mfgr. I wouldn't worry about cats
being a performance restriction on a SLO unless you
are running with some serious engine work. Even at
that, I'd be skeptical.

Ian

--- "James F. Ryan III" <av8r567@optonline.net> wrote:
> If FL has no emissions testing why would it be
> illegal to remove it?
> 
> Back in the 70s and early 80s the cats were added
> after the engine selection
> and design and consequently "choked" the engine,
> hence the bad rap that cats
> still have to this day (in some people's minds).
> 
> Nowadays it seems as though engines are designed and
> tuned with the cats as
> an integral part, and the cat technology has
> improved dramatically in the
> last 15 years.  It's been said many times on this
> list that "removing the
> cats from your SHO kills the low-end" AND "the SHO
> engine likes some
> backpressure".
> 
> I don't know if that holds true for the 3.0 or 3.8
> in your SLO, but gutting
> one cat and having a difference in back pressure
> between the cylinder banks
> can't be a good thing.
> 
> Do your part for the environment and get it
> replaced, or just live with the
> rattling until the piece finally works itself out of
> the cat and comes
> flying out your tail pipe in a puff of smoke.
> 
> 
> 
> ----- Original Message ----- 
> From: "Jon Heese" <heese@digi-net.com>
> To: "SHOTimes List" <shotimes@autox.team.net>
> Sent: Thursday, July 15, 2004 11:51 AM
> Subject: [Shotimes] rattling cat
> 
> 
> > My '95 SLO was running rich due to some changes I
> made to the throttle
> > body (since fixed), but I fear it already killed
> my passenger bank cat.
> > I don't much care about its functionality (FL has
> no emissions testing),
> > but now i've got a bunch of rocks rattling around
> inside the thing.  I'd
> > take it to a muffler shop, but I presume that they
> won't just gut it for
> > me (still illegal, right?), and I don't want to
> pay money I don't have
> > for new cats I don't want, just to get rid of the
> rattling.
> >
> > I looked at the possibility of removing the
> downpipe assembly (FL car
> > has seen no salt), but I'm not sure exactly how
> I'd go about gutting the
> > thing afterwards...
> >
> > I know the ATX SHO cats are different, but if
> anyone has any experience
> > in general, I'd appreciate any tips or advice on
> the matter.
> >
> >  - Jon Heese
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> > Shotimes@autox.team.net
> > http://www.team.net/mailman/listinfo/shotimes
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