RE: gut the cat.

[Ewan Hopkins <Ewan.Hopkins@computeraid.co.uk>]

Are the emissions test for CAT equipped cars not much stricter than non-cat?
I'm sure that,  at least in the UK, CAT equipped cars must have CO levels
around or under 0.5%, which is way lower than the optimum for non-CAT, i.e.
if your non-CAT car is running within CAT specs, it will be way too lean.

Ewan Hopkins.

-----Original Message-----
From: Mark A Peele [mailto:scirocco.gtx@juno.com]
Sent: 13 July 1999 16:14
To: scirocco-l@scirocco.org
Subject: RE: gut the cat.


I had to cut the bolts off of most of my cars. If you twist hard enough
with the wrenches sometimes they will simply break.

The big incentive in the US to keep a gutted cat is that in some states,
if they look under your car and see no cat at the emissions test - you
could be slapped with some BIG TIME federal penatlies. 

For my cars that came with a CAT, I keep the original cats (all gutted by
now, except for the Golf, which has a new one since I "had" to go to the
A2 dual downpipe). For Kristen's '78, no cat required!!!!!! 1978 & 1979
Sciroccos were non-catalyst.

Having said that, none of my cars have ever failed an emissions test. :-)

Mark Peele
1981 Scirocco S, 1982 Scirocco, 1987 Golf GT
Then there's Kristen's '78 Scirocco
http://home.t-online.de/home/Scirocco2/mark.htm
Direct Mail: SCIROCCO_GTX@YAHOO.COM

--------- Forwarded message ----------
From: Ewan Hopkins <Ewan.Hopkins@computeraid.co.uk>
To: Aaron <catacomb@psu.edu>
Cc: "'scirocco-l@scirocco.org'" <scirocco-l@scirocco.org>
Date: Tue, 13 Jul 1999 15:48:57 +0100
Subject: RE: gut the cat.
Message-ID: <B0000130093@msweeper.computeraid>

you should get power gain, not loss!  There is in fact an official
substitute for the CAT listed, which is just a short length of pipe with
the
same flanges as the CAT, so I'd guess there is no technical reason for
not
gutting the cat.  Might be a bit noisier though.

HTH,

Ewan Hopkins

-----Original Message-----
From: Aaron [mailto:catacomb@psu.edu]
Sent: 08 July 1999 23:54
To: scirocco-l@scirocco.org
Subject: gut the cat.



Has anyone gutted their cat.?   I have an 84 8V, and the cat is falling
apart from the inside out (lots of rattling).  

I think it's getting bad, because for about 20 minutes (out of a 50
minute
ride) I felt excessive power loss.. and with a loud rattle from the cat,
the power came back.

I've been told this is probably due to the honey comb guts of the cat are
probably falling apart and shifting due to vibrations when driving.

Anyhow, I dont have the money right now to get the cat-back system, so I
was hoping to gut the cat in order to buy me a month or two.

Is there any danger in doing this with the 8V engine?  Will it cause flow
problems / power loss?

Also, is there any easy way to pull the cat off?  It looks as if this my
be
the original cat (15 years old) and the bolts are rust-welded to the
mounting points.  I've soaked them in a indutrial version of liquid
wrench
for two days now... no luck though (cant even see threads on the screws).

Thanks for any help!

-Aaron
 84 8V


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