Cat Poop
01-10-2004, 09:13 AM
#1
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Cat Poop
<center><img src="http://www.jimmypribble.com/temp/urqpoop.jpg"></center><p>
This came up in discussion at the local after-work meet on Thursday, so for those that know my car, I thought I would show the reason why my UrQ never ran correctly. The main culprit - a huge poop of lining material had dislodged from the inside of the catalytic converter and lodged inside the tailpipe. I assume this happened after the PO emptied the cats. The exhaust guy found this when he was installing my new exhaust system. It's really miraculous that the car ran at all.
Anyway, as James has mentioned, my car will be for sale by the end of the month and I will post it in various classifieds at that time.
Don't let this happen to you. Make sure your cars get plenty of fiber!
This came up in discussion at the local after-work meet on Thursday, so for those that know my car, I thought I would show the reason why my UrQ never ran correctly. The main culprit - a huge poop of lining material had dislodged from the inside of the catalytic converter and lodged inside the tailpipe. I assume this happened after the PO emptied the cats. The exhaust guy found this when he was installing my new exhaust system. It's really miraculous that the car ran at all.
Anyway, as James has mentioned, my car will be for sale by the end of the month and I will post it in various classifieds at that time.
Don't let this happen to you. Make sure your cars get plenty of fiber!
01-11-2004, 12:33 PM
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Never more than 3-4 psi of boost, no power...
...but we couldn't find any vacuum leaks, compression checked out, etc. Everything kept pointing to the turbo, yet we couldn't figure out how it was making less than WG "spring rate" psi. It seems like it should either work, or not. We never thought about an exhaust restriction, because we knew the cat had been emptied. Not emptied enough, apparently.
01-12-2004, 07:52 AM
#7
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That stuff wasn't from a cat. It looks more like aftermarket muffler guts, like from a "glass pack"
"Cat guts" are more like a ceramic honeycomb that breaks into chunks.
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01-12-2004, 09:42 AM
#9
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? Not that I have ever seen. The stock cat is just a big honeycomb.
Actually, I stuffed that in your exhaust when you stopped by when you first bought the car. Sure took you a long time to find it... 
01-13-2004, 06:26 AM
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Looks like kitty-poop to me...
Around the honeycomb on the early cars, audi (Liestritz/Bosal) used a boundary layer of that steel wool to protect the honeycomb from shock. Jimmy, what this looks like to me is that someone emptied the cat "in situ" and didn't see/pull the wool out. After a while the wool will get hot enough (see the white burn on the wool, that 'was' redhot) and it will start to fold itself up and exit the kitty. Unsuccessfully it would appear. The wool is actually a woven cylinder (read 1 piece). Depending on early model, there are 2 of these wool blankets: 1 in front and 1 in back (5ktq), or just one in the center (urq). Later model cars have no wool in the cat, all exhaust must enter the substrate, and better catalyst mounting negated the shock absorbtion need.
HTH
Scott Justusson
QSHIPQ Performance Tuning
HTH
Scott Justusson
QSHIPQ Performance Tuning
