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PostPosted: Sat Jun 18, 2005 2:54 am 
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Odd query I have...

I was wondering if I got really bored, and wanted to clean out my Catalytic Converter ...for example, wash away any deposits, dirt, debris, buildup, etc... is there something that would do it? Would some kind of cleaning aerosol, spary, cleaner, degreaser...whatever, work if I had my CatCon out already and was interested in "rejuvenating" it?

Obviously, the CatCon would be in my hands, off the car.

I've never really thought of this before...and was wondering if anyone knows anything about it.

I'm all ears.

TGstring

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PostPosted: Sat Jun 18, 2005 4:51 am 
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I've thought about flushing one out with a pressure washer, but haven't tried it yet. Obviously you'd want to flush it "backwards." Maybe even try soaking it in degreaser or Seafoam first?

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PostPosted: Sat Jun 18, 2005 5:46 am 
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Try "cilit bang", it cleans allmost anything i've heart :lol:

okey, now really, perhaps a bit off coke will get the deposts off...
The core of the kat is very weak, breaks easely so highpressure waterjets isn't a great idea. first try pressurized air.

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PostPosted: Sat Jun 18, 2005 10:18 am 
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just take a broomstick and smash all of the crap thats insided the cat.... it will break up and fall out. Then your cat will flow better than the day it came off the assembly line.

:D

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PostPosted: Sat Jun 18, 2005 11:21 am 
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I would try the soaking it in something strong. Do you have any Challenger cleaner handy? That stuff eats away all kinds of crap. Maybe best to go find a freebie cat and experiment on it first so you don't hurt your expensive cat by mistake. Of course Roy's method cures all future cleaning requirements :lol:

Mike


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PostPosted: Sat Jun 18, 2005 2:23 pm 
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heat it up with a torch and blow clean air through it :D

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PostPosted: Sat Jun 18, 2005 5:40 pm 
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TGstring wrote:
Odd query I have...

I was wondering if I got really bored, and wanted to clean out my Catalytic Converter ...for example, wash away any deposits, dirt, debris, buildup, etc... is there something that would do it? Would some kind of cleaning aerosol, spary, cleaner, degreaser...whatever, work if I had my CatCon out already and was interested in "rejuvenating" it?

Obviously, the CatCon would be in my hands, off the car.

I've never really thought of this before...and was wondering if anyone knows anything about it.

I'm all ears.

TGstring


I've actually been quite impressed with how clean cat converters stay after many many miles.

I failed smog on my 1991 SE-R last year, removed the cat because I thought it may have melted (My SE-R's been feeling a bit gutless, 160K miles on the original cat.). The honeycomb was nice, clean and grey. No deposits on the engine side, the output wasn't dirty either.

I'd actually be afraid of cleaning it - you might pollute what little precious metal coating is in there resulting in a DEAD but clean converter!

Dave

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PostPosted: Sat Jun 18, 2005 11:38 pm 
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brand new high flow units from ebay
i've got the 2.5" unit, but a 2" that's more then big enough for a non-turbo gti of any sort is only $28 and shipping was relatively cheap.
http://cgi.ebay.com/ebaymotors/ws/eBayI ... gory=33629
it's not really worth the effort of cleaning for that price.. they've also got new o2 sensors for $15
http://cgi.ebay.com/ebaymotors/ws/eBayI ... gory=46097
talk about a steal, plugs right in, they even list it for the geo metro & suzuki swifts ...

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PostPosted: Sun Jun 19, 2005 11:12 am 
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Tommy all I got to say man is you fit in perfectly with the majority of swift owners out there :D

Ryan


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PostPosted: Sun Jun 19, 2005 3:14 pm 
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FiveZigen wrote:
Tommy all I got to say man is you fit in perfectly with the majority of swift owners out there :D

Ryan


:lol: :lol: :lol:

So damn true... :lol:

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 Post subject: ...
PostPosted: Sun Jun 19, 2005 3:32 pm 
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I know what you guys mean in one way,
but from another perspective, you guys are WWAAAAAAYYYYYY off as to why I'm asking this question with the Cat.

Either way, I don't really care. :-P

TGstring

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PostPosted: Sun Jun 19, 2005 10:17 pm 
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Ah...so why are you asking? Answer=Karma points :rollin:

Mike 8)


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PostPosted: Sun Jul 03, 2005 2:19 am 
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Roy Dean wrote:
just take a broomstick and smash all of the crap thats insided the cat.... it will break up and fall out. Then your cat will flow better than the day it came off the assembly line.

:D



LISTEN to this man thats the way to go :D


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 Post subject: .....
PostPosted: Sun Jul 03, 2005 4:44 pm 
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Sadly, in Australia, this can net you a $10,000 on the spot fine.

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PostPosted: Sun Jul 03, 2005 4:49 pm 
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Also, I don't think a emptied cat will flow much better than a good, functionnal unit. Think about the turbulence for a second.

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PostPosted: Sun Jul 03, 2005 6:09 pm 
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Yep Jess is right. Buy a Catco cat for the high flow and clean exhaust.

Mike

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 Post subject: .....
PostPosted: Mon Jul 04, 2005 6:26 pm 
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Or why not run a bigger cat off another higher capacity, higher hp car? Mine ran one off a 5.0 for a few years until it collapsed.

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PostPosted: Mon Jul 04, 2005 7:19 pm 
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I cleaned mine with a hammer and a large screwdirver. Now they will never get clogged.

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PostPosted: Mon Jul 04, 2005 8:46 pm 
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Metropwr wrote:
I cleaned mine with a hammer and a large screwdirver. Now they will never get clogged.


How are you getting around California emissions/inspections?

Mike

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PostPosted: Mon Jul 04, 2005 10:17 pm 
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WE0H wrote:
Metropwr wrote:
I cleaned mine with a hammer and a large screwdirver. Now they will never get clogged.

How are you getting around California emissions/inspections?
Mike


Yeah, I'd like to know too. Do they dyno your car and sniff for oxides of nitrogen in your county?

Dave

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1992 Geo metro, 1.0L 5spd, 511,000miles on original engine & trans
- First time engine work at 456K miles, bad headgasket. Rebuilt head, Felpro gasket installed.
- knuckles/hubs/brakes/13" wheels from a 2000 Metro, running 175 70R13
- New bearings and 1st/2nd synchros at 440.5K miles.
- MPGuino
- Averaging ~ 51MPG these days


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PostPosted: Mon Jul 04, 2005 11:10 pm 
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Metropwr wrote:
I cleaned mine with a hammer and a large screwdirver. Now they will never get clogged.

<rant>since it's a chore to subtract karma points for stupid posts, lets just say, i hope you get busted/fined :P no cat, even on a 3cyl = 10x more emissions then any of the big new v8 suv's, it's like bragging about littering </rant>
the gains are so negligable and the replacement costs so small, why not just throw a larger high-flow unit on ...

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PostPosted: Mon Jul 04, 2005 11:20 pm 
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Catco cats are very low priced and flow Wahoo 8)

I paid 20 bucks for mine.

Mike

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PostPosted: Tue Jul 05, 2005 1:45 am 
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It's funny you say that because OBDII is supposed to sense when your smog equipment is up to 150% out of regulations and trips the check engine light. My check engine light never comes on even with the new cam.

I find it odd that you say it pollutes so much even when my second O2 sensors doesn't trip the check engine light. My car is also equipped with the DIS and fires on the exaust stroke to further lessen emissions.

In california on OBDII cars it is illegal to put on aftermarket cats. They have to be factory replacement from the factory. I am going to put an aftermarket cat on anyways when I get the header and new muffler.

You need to chill out Nitro at least I am not dirving around my 7.7L Cadillac anymore. And please don't tel me that my car with out cats pollute more than that beast. I am already doing my part by driving a pretty fuel efficient and relitively clean burning car when I can be driving around a smog exempt car that pumps out the crap like it was the thing to do.

By the way don't you work in a racing shop? Do those cars there run cats? If they don't, doesn't that mean that you are promoting air pollution also?

How much pollution does it take to make the fuel to feed those big V-8's? I wonder.

Oh, by the way my first cat is my exhaust manifold. I bet most of you guys don't have one of those.

If you fart in California with out your clothes on it is illegal. I am doing the best with what I got short of moving to another state.


n1tr0 wrote:
Metropwr wrote:
I cleaned mine with a hammer and a large screwdirver. Now they will never get clogged.

<rant>since it's a chore to subtract karma points for stupid posts, lets just say, i hope you get busted/fined :P no cat, even on a 3cyl = 10x more emissions then any of the big new v8 suv's, it's like bragging about littering </rant>
the gains are so negligable and the replacement costs so small, why not just throw a larger high-flow unit on ...

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PostPosted: Wed Jul 06, 2005 4:23 am 
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The presence of a catalytic converter makes an enomous reduction in your vehicle's emissions output. How much? How about 99%?:
Quote:
Catalytic converters provide a huge emission reduction on most automobiles. Many Original Equipment Manufacturers (OEM) depend on catalysts to clean up 99% of exhaust emissions. That’s a much bigger contribution to clean air than any other single component. A good catalytic converter can reduce NOx emissions from 2000 PPM to 20 PPM. That’s a huge reduction!


There's no way a 1 L without a cat could ever produce fewer emissions than even a V-10 with intact emissions hardware.
This isn't the first time this has been mentioned:

n1tr0 wrote:
alright, since you can't take a hint, i'm going to rant...
ya, it can be nice not being OVER-regulated, but to turn your car into a gross polluter on purpose, for an absolutely minimal power gain. a 1.3L w/o a cat is still going to put out 10x the pollution of a hummer2 :P
seriously, victoria is an awesome place, but that shitty attitude isn't cool on this forum and it's really not cool in the real world where we all breathe the air.
Quote:
Catalytic Converters have been shown to reduce emissions of carbon monoxide by 80 percent under test conditions.
Catalytic Converters have been shown to reduce emissions of nitrogen oxide by 95 percent.
The Institute for European Environmental Policy has published a report showing that car drivers breathe in up to three times more toxic exhaust fumes than pedestrians or cyclists. Cars do not protect drivers from pollution, as motorists are driving in a "tunnel of pollution." Car drivers in the centre or outside lanes are subject to a huge buildup of toxic gases.

etc...
so really the jerk in front of you w/o his cat is submitting you to 5-20x more toxins then you'd have to deal w/ ..
so next time you're talking to someone and they tell you how they removed their cat, punch them in the head, it's like the jerks who sit there blowing their cigarette smoke in your face. i'd challenge you to show me how you're going to get any substantial gain from your engine w/o a cat vs. my $60cdn highflow cat.


Lihtan wrote:
My opinion on removing cats to gain power is to look elsewhere for power gains. To me it's just not worth it to unneccesarily pollute the air for minor power gains. In fact I even want to smack people upside the head that use PCV breath filters.:evil: Installation of a good quality highflow cat doesn't have to be a performance compromise. A high quality brand like Milltek can not only improve power, but also lead to cleaner emissions than stock equipment, because it was engineered to clean emissions from dirtier European fuels. I plan on installing their cats on all my vehicles.
Milltek wrote:
Image
...The finished honeycomb is then coated with Aluminum Oxide, some rare earth metals and Platinum and Rhodium. The Platinum and Rhodium are applied at a rate of 25 grams per cubic foot, which compares with between 5 and 10 grams per cubic foot for typical US aftermarket items.

It is normal practice in Europe to use much higher quantities of precious metals on catalysts, because European gasoline has more impurities in it which gradually poison catalysts. If catalysts with such high levels of precious metals are used with US fuels, the post-catalyst emissions are extremely low and the durability of the catalysts is very good indeed.

When you own an automobile you take personal responsiblity for it's upkeep, maintenance and any damage you may cause during its use. That's why you get car insurance. It lets you make restitution to injured parties. As such you also have to take responsibilty for environmental damage your vehicle causes, whether its smashing a mailbox or polluting the atmosphere. Do you also dump your old engine fluids on your lawn or down the nearest storm sewer? I fucking hope not.

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PostPosted: Wed Jul 06, 2005 4:37 am 
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I have heard of several turbo 3's passing the emission tests without cats (hollowed out). Some motors run alot cleaner than others. I still have cats on my cars, but don't kid your self. Cats don't make power, they are pretty restrictive.

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