How does one unclog catalytic converters most easily? - Page 2

crazypete · 01-22-2003, 01:22 PM

So you truly feel that a carbed mustang could pass a sniffer with a good pair of cats and an airpump if I hooked it back up the way it was before with no mcguyver stuff.

(oh matches...well, I could build a huge match barge, yeah yeah and take all the match heads off and put them into a huge metal trashcan, which I lash to the back of the raft and ignite and use like a JATO...)

PKRWUD · 01-22-2003, 02:22 PM

Yes, i think you would easily pass the sniffer, but i don't know what the laws are there regarding a carb on a car when that wasn't a factory option.

ChunkFunky · 01-22-2003, 02:30 PM

My guess is, if it passes the sniffer, then you'll be all set.. depending on your mechanic.. .if you have a good relationship with him he most likley wont bust your balls... or if he's just lazy, then you'd be fine... if the machine likes it.. then i would imagine it wont be a big deal. Though, I would guess that the rules for inspection would state something like, if it wasnt an option then then it shoudl fail or something.. technicaly your flowmasters should fail, since they are louder then stock.. but most people arent in the ball busting business..
-as

Mach 1 · 01-22-2003, 05:07 PM

no, flowmasters have nothing to do with passing inspection. if its safe(brakes, lights, etc...) and it passes emmissions with the sniffer, you should be good to go.

they can do a visual and make sure no emissions equipment has been removed, but most places arent that concerned with the visual. dont sweat that part.

01-22-2003, 05:50 PM

Quote:

Originally posted by crazypete
Ok, here is the other idea I had...

I've got the airpump and I've got the tiny stock alternator pulley left over from my underdrive pulley install. I've pretty much got the pulley drilled to fit the airpump, so the airpump spins like there's no tommorrow. Will blasting incredible amounts of air solve the problem?

Should I blast the cats or the heads if given the choice or should I blast them both with air.

I had to laugh at that one. Never heard of someone modifying the smog pump to become a small jet engine!

Good luck though. Let us know how it goes.

crazypete · 01-22-2003, 06:59 PM

It blows so much air that for a moment, I thought of sealing a funnel to the top of the carb and using it as a poor man's supercharger. Then I smaked myself in the head and just removed it.

Nixon1 · 01-22-2003, 08:01 PM

[Scratches head, deep in thought over the supercharger idea]...

If I had a smog pump that is....

Mach 1 · 01-22-2003, 08:02 PM

Well, you get an "A' for effort, but your ideas are poor, very poor.

theres no cheap way to make a nice, clean, well built car. Do it right or dont mess with it at all.

crazypete · 01-24-2003, 01:31 PM

oops.... I guess smog pumps we'rent meant to operate at 15,000 rpms for extended periods of time. It pretty much melted. The inside of it is all fused together. I knew something was wrong when I saw the thick plumes of smoke billowing from under the hood. Basically, the pump had siezed and the belt was being dragged over it, melting the belt rubber too.

Everyone can now say... "I told ya so"

Either way it WAS cool. It sounded like a propeller. Well, I'm off to the junkyard.

jj_jonathon · 01-24-2003, 03:02 PM

isnt the best way to clean out cats to use leaded gas? i hear it works wonders...

ChunkFunky · 01-24-2003, 03:20 PM

other then a lead additive, where ya going to find leaded gas these days?

as as for the pump.. that's pretty funny.. I wish I would have seen that... I wonder what a junk yard gharges for a pump...
-as

Mach 1 · 01-24-2003, 03:36 PM

I have a air pump for sale if your interested. Its from a 93GT and in excellent condition.

crazypete · 01-24-2003, 04:13 PM

Ha Ha!

Nothing a mallet, a file and some sandpaper couldn't fix (ok, a lot of sandpaper). I not have a slightly warmed over, but "custom" airpump with lots of clearance inside. With more wisdom, I reinstall the original pulley

Really, lead additive helps? Why is that? I figured it would clog the converters.

Is there any reason not to simply pump air only to the rear of the heads? Saves me some tubing.

Nixon1 · 01-24-2003, 07:39 PM

Lead additive..HA!!!!! Lmao... You'd be running like 130 octane. Not only would you fail emissions because the sniffer would pick up all that lead and crap, which is very toxic by the way I'm sure, but your engine would probably take very very poorly to it..might damage components. These cars weren't meant to operate with lead...period. And being that it's illegal to use leaded gas, I highly doubt there's a lead additive..except maybe in like, Afghanistan...but then who has a car in Afghanistan??

jj_jonathon · 01-24-2003, 07:47 PM

uhh...you guys know that little dingy planes run on leaded fuel...the stuff is REALLY high octane...ive been with my brother a couple of times flying and usually he has to fill up...so just bring your old pre-cats muscle car to a small-scale airport and fill up for $30...still not too good for the car though..lol

but yea...you can get leaded fuel :P

crazypete · 01-24-2003, 07:49 PM

If I hear little popping noises in the exhaust on deceleration, should I be worried? They're not loud bangs, just little "doof doof" sounds when I'm coasting. The backfires sound like they are coming from the headers rather than the cats. Is it safe to ignore them or is something going to blow apart?

Probably has something to do with me pumping air directly into the back of the heads with no dump valve.

Nixon1 · 01-24-2003, 07:53 PM

Backfires are normal. My 91 GT is an EFI car with headers, an X pipe, and flowmasters, and it backfires on deceleration. Pretty much any car with exhaust mods is going to backfire on deceleration, especially these.. No worries, unless it backfires during acceleration or cruise or the backfires sound like they're going to rip something apart.

Nixon1 · 01-24-2003, 07:55 PM

Btw, jonathon, I totally forgot planes use leaded... I should've known that...I've flown several single engines and wanted to be a pilot at one point in time. But that was when I was 14 and as far as cars went, I didn't know a turbocharger apart from a power steering pump. No joke.

01-24-2003, 08:18 PM

Quote:

Originally posted by Nixon1
Lead additive..HA!!!!!
And being that it's illegal to use leaded gas, I highly doubt there's a lead additive..except maybe in like, Afghanistan...but then who has a car in Afghanistan??

They sell lead additives at your local autoparts store. So, who's the..."Lmao"??

J/K

Nixon1 · 01-24-2003, 08:21 PM

Do they really sell lead additives??? If they do, god help us all.. Apparently very old cars are exempt from the 'don't use toxic chemicals that destroy the earth and kill us all' laws. Because LEAD IS POISONOUS!! (And no, emissions don't kill us all, only destroy the earth.

)

01-22-2003, 01:22 PM	#21
crazypete Registered Member Join Date: Sep 2002 Location: Boston Posts: 592	So you truly feel that a carbed mustang could pass a sniffer with a good pair of cats and an airpump if I hooked it back up the way it was before with no mcguyver stuff. (oh matches...well, I could build a huge match barge, yeah yeah and take all the match heads off and put them into a huge metal trashcan, which I lash to the back of the raft and ignite and use like a JATO...) __________________ 91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior

01-22-2003, 02:22 PM	#22
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Yes, i think you would easily pass the sniffer, but i don't know what the laws are there regarding a carb on a car when that wasn't a factory option. __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

01-22-2003, 02:30 PM	#23
ChunkFunky Registered Member Join Date: Apr 2002 Location: Tustin, CA Posts: 465	My guess is, if it passes the sniffer, then you'll be all set.. depending on your mechanic.. .if you have a good relationship with him he most likley wont bust your balls... or if he's just lazy, then you'd be fine... if the machine likes it.. then i would imagine it wont be a big deal. Though, I would guess that the rules for inspection would state something like, if it wasnt an option then then it shoudl fail or something.. technicaly your flowmasters should fail, since they are louder then stock.. but most people arent in the ball busting business.. -as __________________ '89 GT Convertible: TFS TW Heads, TFS Street Intake, TFS Stage 1 Cam, FMS 1.6 RRs, 24# Injectors, Pro-M 75mm MAF, No Name CAI, 3.73s, O/R H-Pipe, FlowMasters, AOD w/ Trans-Go Shift Kit

01-22-2003, 05:07 PM	#24
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	no, flowmasters have nothing to do with passing inspection. if its safe(brakes, lights, etc...) and it passes emmissions with the sniffer, you should be good to go. they can do a visual and make sure no emissions equipment has been removed, but most places arent that concerned with the visual. dont sweat that part. __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

01-22-2003, 06:59 PM	#26
crazypete Registered Member Join Date: Sep 2002 Location: Boston Posts: 592	It blows so much air that for a moment, I thought of sealing a funnel to the top of the carb and using it as a poor man's supercharger. Then I smaked myself in the head and just removed it. __________________ 91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior

01-22-2003, 08:01 PM	#27
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	[Scratches head, deep in thought over the supercharger idea]... If I had a smog pump that is.... __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

01-22-2003, 08:02 PM	#28
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	Well, you get an "A' for effort, but your ideas are poor, very poor. theres no cheap way to make a nice, clean, well built car. Do it right or dont mess with it at all. __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

01-24-2003, 01:31 PM	#29
crazypete Registered Member Join Date: Sep 2002 Location: Boston Posts: 592	oops.... I guess smog pumps we'rent meant to operate at 15,000 rpms for extended periods of time. It pretty much melted. The inside of it is all fused together. I knew something was wrong when I saw the thick plumes of smoke billowing from under the hood. Basically, the pump had siezed and the belt was being dragged over it, melting the belt rubber too. Everyone can now say... "I told ya so" Either way it WAS cool. It sounded like a propeller. Well, I'm off to the junkyard. __________________ 91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior

01-24-2003, 03:02 PM	#30
jj_jonathon Trisket Join Date: May 2002 Location: University of Florida, FL Posts: ½ Posts: 1,560	isnt the best way to clean out cats to use leaded gas? i hear it works wonders... __________________ University of Florida - Physics Major My 02GT vert Media Center Pics BBK Underdrive Pulleys \| K&N FIPK (Gen II) \| Bullet Grille \| Mach 1 Chin Spoiler \| UPR Interior Parts \| XM Radio \| Audiobahn Subs Ricer Hater's Club Member #1/2 (30) http://www.ricehatersclub.com/

01-24-2003, 03:20 PM	#31
ChunkFunky Registered Member Join Date: Apr 2002 Location: Tustin, CA Posts: 465	other then a lead additive, where ya going to find leaded gas these days? as as for the pump.. that's pretty funny.. I wish I would have seen that... I wonder what a junk yard gharges for a pump... -as __________________ '89 GT Convertible: TFS TW Heads, TFS Street Intake, TFS Stage 1 Cam, FMS 1.6 RRs, 24# Injectors, Pro-M 75mm MAF, No Name CAI, 3.73s, O/R H-Pipe, FlowMasters, AOD w/ Trans-Go Shift Kit

01-24-2003, 03:36 PM	#32
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	I have a air pump for sale if your interested. Its from a 93GT and in excellent condition. __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

01-24-2003, 04:13 PM	#33
crazypete Registered Member Join Date: Sep 2002 Location: Boston Posts: 592	Ha Ha! Nothing a mallet, a file and some sandpaper couldn't fix (ok, a lot of sandpaper). I not have a slightly warmed over, but "custom" airpump with lots of clearance inside. With more wisdom, I reinstall the original pulley Really, lead additive helps? Why is that? I figured it would clog the converters. Is there any reason not to simply pump air only to the rear of the heads? Saves me some tubing. __________________ 91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior

01-24-2003, 07:39 PM	#34
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	Lead additive..HA!!!!! Lmao... You'd be running like 130 octane. Not only would you fail emissions because the sniffer would pick up all that lead and crap, which is very toxic by the way I'm sure, but your engine would probably take very very poorly to it..might damage components. These cars weren't meant to operate with lead...period. And being that it's illegal to use leaded gas, I highly doubt there's a lead additive..except maybe in like, Afghanistan...but then who has a car in Afghanistan?? __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

01-24-2003, 07:47 PM	#35
jj_jonathon Trisket Join Date: May 2002 Location: University of Florida, FL Posts: ½ Posts: 1,560	uhh...you guys know that little dingy planes run on leaded fuel...the stuff is REALLY high octane...ive been with my brother a couple of times flying and usually he has to fill up...so just bring your old pre-cats muscle car to a small-scale airport and fill up for $30...still not too good for the car though..lol but yea...you can get leaded fuel :P __________________ University of Florida - Physics Major My 02GT vert Media Center Pics BBK Underdrive Pulleys \| K&N FIPK (Gen II) \| Bullet Grille \| Mach 1 Chin Spoiler \| UPR Interior Parts \| XM Radio \| Audiobahn Subs Ricer Hater's Club Member #1/2 (30) http://www.ricehatersclub.com/

01-24-2003, 07:49 PM	#36
crazypete Registered Member Join Date: Sep 2002 Location: Boston Posts: 592	If I hear little popping noises in the exhaust on deceleration, should I be worried? They're not loud bangs, just little "doof doof" sounds when I'm coasting. The backfires sound like they are coming from the headers rather than the cats. Is it safe to ignore them or is something going to blow apart? Probably has something to do with me pumping air directly into the back of the heads with no dump valve. __________________ 91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior

01-24-2003, 07:53 PM	#37
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	Backfires are normal. My 91 GT is an EFI car with headers, an X pipe, and flowmasters, and it backfires on deceleration. Pretty much any car with exhaust mods is going to backfire on deceleration, especially these.. No worries, unless it backfires during acceleration or cruise or the backfires sound like they're going to rip something apart. __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

01-24-2003, 07:55 PM	#38
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	Btw, jonathon, I totally forgot planes use leaded... I should've known that...I've flown several single engines and wanted to be a pilot at one point in time. But that was when I was 14 and as far as cars went, I didn't know a turbocharger apart from a power steering pump. No joke. __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

01-24-2003, 08:21 PM	#40
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	Do they really sell lead additives??? If they do, god help us all.. Apparently very old cars are exempt from the 'don't use toxic chemicals that destroy the earth and kill us all' laws. Because LEAD IS POISONOUS!! (And no, emissions don't kill us all, only destroy the earth. ) __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

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