Smog Pump
Thread Starter
Intermediate
Joined: May 2019
Posts: 25
Likes: 2
From: Indianapolis, IN
Pro
Joined: Nov 2014
Posts: 728
Likes: 346
From: Smyrna, TN
The systems were routinely removed and thrown in the trash...
It was the quickest and cheapest performance upgrade...
I am guilty of doing this as well to a '74 L82 in 1982
Restorer's are always looking for A.I.R systems and parts...
It was the quickest and cheapest performance upgrade...
I am guilty of doing this as well to a '74 L82 in 1982
Restorer's are always looking for A.I.R systems and parts...
Race Director
Joined: Nov 2006
Posts: 13,227
Likes: 7,825
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
Wouldn't be much. Removing a tiny bit of drag. All they do is inject air into the exhaust to dilute the exhaust, and supposedly help burn off any unburnt fuel. Mostly a gimmick.
clean up the engine compartment getting rid of a useless component? I think yes.
clean up the engine compartment getting rid of a useless component? I think yes.
Pro
Joined: Nov 2014
Posts: 728
Likes: 346
From: Smyrna, TN
The pump is a drag on the engine...not much, but does.
The injected air back into the exhaust was an attempt to reburn unburnt fuel...for cleaner emissions.
In reality, it interrupted the natural flow in the cylinder from scavenging.
The hot exhaust blown back into the cylinder would reduce the amount of cool air and fuel coming in...
Could probably get a similar effect by sticking a potato up the exhaust...
Measurable? I am sure someone, at some point quantified it on a dyno or on a quarter mile.
Probably written up long ago in a performance magazine...
And they take up room where a turbo belongs....
The injected air back into the exhaust was an attempt to reburn unburnt fuel...for cleaner emissions.
In reality, it interrupted the natural flow in the cylinder from scavenging.
The hot exhaust blown back into the cylinder would reduce the amount of cool air and fuel coming in...
Could probably get a similar effect by sticking a potato up the exhaust...
Measurable? I am sure someone, at some point quantified it on a dyno or on a quarter mile.
Probably written up long ago in a performance magazine...
And they take up room where a turbo belongs....
Safety Car
Joined: Dec 1999
Posts: 3,600
Likes: 837
From: PA
An engine builder that I used about 25 years ago had a dynamometer… I always wanted to know what that A.I. R. pump cost in the way of horsepower. So we tested it…
Three (3) horsepower on a 380+ horsepower engine. That’s less than 1% and probably within the margin of error… Which means it is so minimal that it can’t be measured accurately.
Don’t worry about the A.I.R. system, it’s not worth the effort.
Regards,
Stan Falenski
Three (3) horsepower on a 380+ horsepower engine. That’s less than 1% and probably within the margin of error… Which means it is so minimal that it can’t be measured accurately.
Don’t worry about the A.I.R. system, it’s not worth the effort.
Regards,
Stan Falenski
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Pro
Joined: Nov 2014
Posts: 728
Likes: 346
From: Smyrna, TN
I say if you are going for originality, leave it alone.
If you are going for performance...you want that mouse to BREATHE...
You take off the AIR, put on a big carb & intake, heads, headers and exhaust on it and get a good cam to feed that beast...
THEN take it to the dyno...
OR perhaps take the AIR off and replace it with a Procharger...
If you are going for performance...you want that mouse to BREATHE...
You take off the AIR, put on a big carb & intake, heads, headers and exhaust on it and get a good cam to feed that beast...
THEN take it to the dyno...
OR perhaps take the AIR off and replace it with a Procharger...