Air Pump ? How important is it ?
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Air Pump ? How important is it ?
I have a 79 bronco with 351M. I just put in a new crate motor. I am still hooking everything up. I have not hooked up the air pump yet. Thats just an emissions thing right ? This is a non-emissions truck(historic tags) I don't plan on driving it much. Just a wheeling truck.
Do I need to hook up the air pump ? I see where it hooks up to the manifold and theres a vacuum valve inbetween the pump and manifold but I am not sure anything else was hooked up when I bought the truck.
Do I need to hook up the air pump ? I see where it hooks up to the manifold and theres a vacuum valve inbetween the pump and manifold but I am not sure anything else was hooked up when I bought the truck.
Tuned
Joined: Jul 2003
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From: Berkeley
That's odd. My '82 California E350 w/ 400 has an underhood sticker specifically listing AIR as a required component, although no catalytic converters is/are needed. Why would they require the AIR pump if there are no cats? I'd remove the ugly useless thing if i could get it past the smog guys... thanx.
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Originally Posted by Ranger1F150
I have a 79 bronco with 351M. I just put in a new crate motor. I am still hooking everything up. I have not hooked up the air pump yet. Thats just an emissions thing right ? This is a non-emissions truck(historic tags) I don't plan on driving it much. Just a wheeling truck.
Do I need to hook up the air pump ? I see where it hooks up to the manifold and theres a vacuum valve inbetween the pump and manifold but I am not sure anything else was hooked up when I bought the truck.
Do I need to hook up the air pump ? I see where it hooks up to the manifold and theres a vacuum valve inbetween the pump and manifold but I am not sure anything else was hooked up when I bought the truck.
If you don't have a cat you shouldn't need a pump. No emmisions? No problem. Maybe you can install a nice exhaust on it.
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I purchased my california 1982 F-350 4x4 with 400 truck brand new, no cats but it does have the air pump also. Reason for purchasing it was exempt from smog. But guess what. California changed the GVW portion of smog laws and now I have to smog every two years. It won't pass the inspection part of the smog check without the air pump.
Posting Legend
Joined: Sep 2001
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Yep, KawleeFornea is strange.... No help for you guys out there in lala land. You have to keep all the crap.
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As far as I can tell it is not hooked up to the exhaust. The only thing it is hooked up to is the intake manifold. I am not running cats.
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Air pump but no Cat on my 80
I have a 1980 F350 that has an air pump but no Cat either. This truck was bought (and still lives) in Indiana so the Cali thing does not add up on mine. The air pump is still there but the original owner (I am the second owner) has removed the belt. Should I go ahead and disconnect and plug off any hoses and throw the damn thing away?
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Originally Posted by Torque1st
Ranger- The intake manifold port leads directly into a passage to the exhaust ports.
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Joined: Nov 2006
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From: Simi Valley, CA
Originally Posted by Ranger1F150
Oh ok. When i bought the truck the port in the manifold was open and exhaust was blowing out of it. Would that cause any problems or make the motor run funny ?
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on my stock manifold I plugged the hole with gasket maker RTV it seem to run a little better. I am currently in process of swapping the entire engine for a brand new crate 351M. I am using a endlebrock manifold and I have a plug for the hole.
Do you think that hole being open could have some how damage the motor and burnt it up ?
Do you think that hole being open could have some how damage the motor and burnt it up ?
Last edited by Ranger1F150; May 22, 2007 at 11:08 AM.
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the airpump helps burn off the unburnt fuel in the texhaust, making the emissions cleaner, cat's or not that's how it works.
fyi, an airpump spins so freely it robs basically NO hp, and besides looking ugly, there is absolutely no reason to remove it.
fyi, an airpump spins so freely it robs basically NO hp, and besides looking ugly, there is absolutely no reason to remove it.