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I have a 1987 Iroc-Z Camaro and I hear that the smog pump robs power and I should remove it but what does it do? Second question, if I remove it will my car run right?
Please help me out, Thx
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Re: What does the smog pump do should I remove it?
It's main purpose is to take up space in my precious engine bay. Makes a good door stop though.
You can bypass it easily if removed. There is a tech article on what belt to buy and how to route it, however apeiron is right it does not take much horsepower maybe 1-2 not enough to notice, but weight and cleaniness is important to some people.
Re: What does the smog pump do should I remove it?
hey my car doesn't have a serpentine belt its got 2 seperate belts so can I just unbolt it and ditch the belt? and do I need to remove the cat if I do this?
Re: What does the smog pump do should I remove it?
Quote:
Originally Posted by Apeiron
The smog pump blows clean air into the exhaust to reduce tailpipe emissions.
Close but not quite.
The smog pump blows clean air into the exhaust until the engine reaches operating temperature. Once the exhaust gets hot enough, the extra air isn't required to lower tailpipe emissions and a valve opens to divert the air away from the exhaust. It's only purpose is to reduce exhaust emissions of a cold engine. Think of it as a cold engine normally runs rich. Any unburnt fuel goes out the exhaust. Extra air is added to the exhaust to lean out that raw fuel in the exhaust which lowers emissions. An O2 sensor may keep the system in an open loop longer without the smog pump.
I took mine off my truck years ago and my TBI system never knew it was missing. The downside of the pump is that once they get moisture in them, they will seize up. It uses little to no hp but once it seizes, it will eat a belt. It also adds unneeded weight to the car.
__________________
87 IROC-Z
All engine, no power adders! Bests: 9.348@144.71
Once the engine goes to closed loop control, the air is diverted directly to the cat where it supplies extra oxygen for converting CO to CO2.
If you remove the belt, block off the tubes on the exhaust. As Stephen said, they will freeze up, and if you remove the belt and leave the rest hooked up to the exhaust, expect it to freeze up. Ask me how I know.
The other thing the pump can do is crankcase evacuation. . .
Re: What does the smog pump do should I remove it?
The GM smog pumps need to be modified to be crankcase evac systems. The inlet is in the front behind the pulley which isn't an easy way to run an inlet hose 2. The Ford pumps are more popular since they have an inlet and outlet port.
Re: What does the smog pump do should I remove it?
get rid of it! it does take energy away from the engine....with age they can seize and burn up the belt! it happened to me. when i removed the belt, the car picked up some power! i still passed emissions...
Re: What does the smog pump do should I remove it?
So on my 87 Tpi engine, it can just be removed and the ECU will not be bothered at all?
Not worried about the HP, but it would be nice to have better access to the engine.
Re: What does the smog pump do should I remove it?
I doing a smog removal on my 86 Iror z mostly because of all the space they take up, im also removing the Cat, no emission controls in WV =). It can give a small amount of HP back, buck to really get some decent Hp put new headers on it.
Re: What does the smog pump do should I remove it?
Quote:
Originally Posted by FlAcKz28
I doing a smog removal on my 86 Iror z mostly because of all the space they take up, im also removing the Cat, no emission controls in WV =). It can give a small amount of HP back, buck to really get some decent Hp put new headers on it.
Wow, you bumped a thread from 2 years ago Good on you for using the search function though! I am getting ready to do an AIR delete also, so I have been sifting through the posts. There is a really good sticky with a pictoral guide in the exhaust forum.
Re: What does the smog pump do should I remove it?
Quote:
Originally Posted by FlAcKz28
I doing a smog removal on my 86 Iror z mostly because of all the space they take up, im also removing the Cat, no emission controls in WV =). It can give a small amount of HP back, buck to really get some decent Hp put new headers on it.
Actually, federal law applies to all 50 states, and federal laws say you cannot remove or disable the emissions devices on any street vehicle.
Please keep the cat on your car by replacing it with an aftermarket "high-flow" cat. You'll keep the air clean and help keep the smog-nazis from having California emissions standards in every state.
Re: What does the smog pump do should I remove it?
i also have 2 belts rather than a serpentine belt. how do i remove my smog pump? i really want the extra space in my engine compartment
and it seems my smog pump has been dumping carbon into the combustion chamber and it is causing it to diesel a little bit. maybe its not the pump but i have replaced a whole lot of crap in my car and retarded my distrubuter and it keeps dieseling so im just trying to eliminate the variables one at a time.
Good on you for using the search function though! I am getting ready to do an AIR delete also, so I have been sifting through the posts. There is a really good sticky with a pictoral guide in the exhaust forum. 
