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Old 09-14-2010, 12:33 PM
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Dumpin' Emission Crap

My son's Jeep doesn't have to pass emission testing for an inspection sticker so I susgested that we get rid of the smog pump and a bunch of vacum lines before trying to tune the 6cyl with the 1bbl carter.

Is there anything performance or mechanical wise that we can hurt by doing this??

thanks,
WR

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Old 09-14-2010, 12:43 PM
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Dumped all of mine with no ill effects.
All those little rubber tubes were cracking and the plastic "T"s and connections were breaking down.
Last to go was the computer controlled Quadrajet and the computer.
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Old 09-14-2010, 04:09 PM
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Quote:
Originally Posted by wretched ratchet
My son's Jeep doesn't have to pass emission testing for an inspection sticker so I susgested that we get rid of the smog pump and a bunch of vacum lines before trying to tune the 6cyl with the 1bbl carter.

Is there anything performance or mechanical wise that we can hurt by doing this??

thanks,
WR
You may not have considered that sooner or later, he will want to sell the Jeep. By removing all the emissions components, you may be limiting your buyers out there. You may also be breaking the law.
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Old 09-14-2010, 04:20 PM
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Quote:
Originally Posted by techinspector1
You may not have considered that sooner or later, he will want to sell the Jeep. By removing all the emissions components, you may be limiting your buyers out there. You may also be breaking the law.
No maybe about it. It is a federal offense to tamper with emissions control systems.
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Old 09-14-2010, 05:07 PM
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I don't know but he said that he had checked and it was pre-emission control regulations. I'll ask him to check again before we do anything.
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Old 09-15-2010, 09:58 AM
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What year is the jeep? It may be old enough to not have to go through testing in your state, but if it came originally equipped with the equipment, I believe it's a no-no to mess with it. I'm guessing if it has it now, it originally came with it . I can't see anyone doing that as an aftermarket 'mod'.
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Old 09-15-2010, 11:37 AM
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Regardless of whether or not your area checks emissions, it is always a federal offense to tamper with or remove emissions equipment on any vehicle. Period.

But, unless an FBI agent pulls you over to check your vacuum lines I think you're pretty safe breaking that law.

The short answer is this: You can expect higher fuel consumption, possible detonation, and no additional power.

Disconnecting the EGR won't affect power. It will affect the requirements for a proper fuel and ignition curve. I would suggest recalibrating the carburetor, using an adjustable vacuum canister on the dizzy, and recurving. EGR dilutes the intake mixture with exhaust gasses to reduce NOx emissions. It is not functioning at idle or anything over about 3/4 throttle, so it doesn't affect power; just cruise emissions. The resulting additional fuel it may require at cruise throttle may affect your MPGs in a bad way.

Disconnecting the smog pump won't affect how the engine runs. It will free up about 1/3 hp.

Disconnecting the PCV is not an option. First, its not an emissions device. Its there to keep the crap out of your oil and pull off blowby gasses. Not having one is just dumb

Otherwise, the rest is probably vacuum lines for things like the hot start door in the air cleaner, the climate control, etc.

Removing the catalyst may help power if it was a restriction to start with, but again it could tank MPG. The resulting loss of exhaust restriction will be accompanied by a leaner mix from the carb requiring you to "fatten" it up a bit. It will also increase your emissions profile by about 6 times. I'm not hugging trees, just providing counterpoint.

Emissions control devices are NOT the reason for low power - the 7.8:1 compression, tiny cam, and pathetic heads are the reason for low power during the smog years.
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Old 09-15-2010, 12:09 PM
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there is no point in removing the equipment, you wont get any increase in power and you might save the weight in the smog pump, what 8lbs? all you will be doing is creating a headache trying to get it to run nicely with out all of the equipment. my suggestion is replace all of the vacuum lines and the fittings! it will run wonderfully
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Old 09-15-2010, 07:14 PM
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"It is a federal offense to tamper with emissions control systems"

Yea Al Gore will come to your house(via: air conditioned Jet)and give you a lecture on going green and try to tell you how many times a day to flush your toilet and explain why they need more tax money outta your pay to provide green jobs...................

So it is my professional opinion that you should throw the emmisions parts far back in the woods as so he doesn't see.
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Old 09-15-2010, 07:36 PM
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Quote:
Originally Posted by 78 monte
"It is a federal offense to tamper with emissions control systems"

Yea Al Gore will come to your house(via: air conditioned Jet)and give you a lecture on going green and try to tell you how many times a day to flush your toilet and explain why they need more tax money outta your pay to provide green jobs...................

So it is my professional opinion that you should throw the emmisions parts far back in the woods as so he doesn't see.
I don't have any intention of starting an argument with you or anyone else about the ramifications of removing emissions equipment, but I think it is imcumbent on all of us to realize that we have junked up the air with these infernal (sic) combustion engines.

Before legislation was enacted, people in Southern California were dieing from breathing the air. 78 Monte, you are too young to have witnessed it and I don't know if they taught this in school, but it happened on my watch. Here's a current photo. It was much worse 30 years ago.
http://thebsreport.files.wordpress.c...pg?w=500&h=324
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Old 09-15-2010, 07:44 PM
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I think we can put the blame on a lot , Not just cars..
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Old 09-15-2010, 07:45 PM
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They need to get some new air.
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Old 09-15-2010, 11:25 PM
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Quote:
Originally Posted by bigdog7373
They need to get some new air.
good idea!

then again ive probably left more of a carbon footprint on the planet then half the people on this board =/
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Old 09-16-2010, 12:56 AM
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Originally Posted by AndersonRacing44
good idea!
then again ive probably left more of a carbon footprint on the planet then half the people on this board =/
Get in line behind me dude.
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Old 09-16-2010, 11:20 AM
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Get in line behind me dude.
haha ok will do.

ive been stock car racing since i was 8 haha gota love the smell of 110 burning
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