Cat****

FR Wilk · 05:51 AM

Frank B · 11-10-2003, 04:51 PM

NIce job Bob Guccione.. you really captured your subject.... hehee..

My cat is Rattling. Probablly full of crap.

Frank B · 11-10-2003, 04:52 PM

Oh so, you edit your own work now.. oh...
Why would my cat be making noise..?

Frank B · 11-10-2003, 04:57 PM

no pissing?.. hmmm.. that's a true sign of genius creativity....... heheee..

Wolf1 · 11-10-2003, 05:29 PM

Quote:

Originally posted by Frank B
Why would my cat be making noise..?

Probably due the ceramic material being broken, but dont worry eventually it will make it to your muffler and then it will rattle too!!! Or a nice sized chunk will lodge in the pipe and the vibration and exhaust pressure will cause it form perfectly and plug up the exhaust. In this case you will have to walk home to get your hacksaw, cut that thing outa there and be the envy of ricers everywhere with your new sound!!..

ronin · 11-10-2003, 08:02 PM

interesting stuff. any idea why it's shaped that way? does it wear away like this over time?

Wolf1 · 11-10-2003, 09:21 PM

Quite often a chunk of this material will break away, it may be a square or triangular piece. With prolonged running it will come up against the outlet of the cat and pressure and vibration will cause it to wear into the exact size and shape of the pipe. If it happens to be facing the right direction it will just be a restriction in the pipe, if its turned sideways it will totally prevent exhaust flow.

ronin · 11-10-2003, 11:41 PM

FR & Wolf, wow, very cool stuff. never had the chance to see the inside of a cat before with the exception of a bead-type cat. very interesting. wonder if there's a market for burnt platinum chunks

ronin · 11-11-2003, 12:00 AM

this is true. I was wondering if the substance in the pic is actually platinum or some sort of composite

ronin · 11-11-2003, 12:16 AM

hah, it did looks sort of clay-like to me. now I know why

checking mail

Wolf1 · 11-11-2003, 06:58 PM

Quote:

Originally posted by ronin
wonder if there's a market for burnt platinum chunks

Actually, there is. We save all the old converters and a guy comes around about every other month and gathers them up. He must sell them somewhere! or he just has a really strange hobby!! The metals in todays converters consists of Rhodium and Paladium.

Brando · Brando's Garage

Hmm... am i the only one that has the idea to remove the catalytic converter until it's time to smog?

dj_yen · 11-12-2003, 07:16 AM

if one's catalytic converter was malfunctioning, would one experience a slight exhaust smell in the cabin of the vehicle and/or heat up unusually high? to the point that your armrest is very warm after driving for 30 mins in warm to hot conditions?

Brando · Brando's Garage

C'mon Wilk... I'm driving without a cat on my 70 beetle! Obviously if it was that harmful they would have passed smog laws

... oh wait, they did. :-\

Kirby2 · 11-12-2003, 02:28 PM

I couldn't believe it when some guy gave me greif over the fact that most of the original equipment cats could be replaced with higher flow units for:

1) Lower back pressure - power and economy
2) A more effective smog system (passing DEQ easier)

in 18 or 19 years of service most are broken, plugged with crap, or simply ineffective. Besides, newer cats just flow better.
(Anti freeze and water mineral from that oil/water cooler leak that everyone has had, usually poisons the ceramic reactive surface.)
Most muffler shops will do the job for around $200 out the door.