Elim. Air Pump
Thread Starter
Racer
Joined: Sep 2005
Posts: 297
Likes: 0
From: Wauseon Ohio
Elim. Air Pump
just dropped the rebuilt engine back in today, WOOT 
. Anyways im getting rid of practically all of my emmisions stuff, that means getting rid of the air pump. The replacement pully is too much. I'd rather just leave it on there instead of paying i think $130 for a dummy pully. Can i just get a shorter belt? will i need to change the belt path? i would just try to figure this out myself, but im sure somone has done it and i dont have any of the front part of my engine back on yet. Thanks
Matt
. Anyways im getting rid of practically all of my emmisions stuff, that means getting rid of the air pump. The replacement pully is too much. I'd rather just leave it on there instead of paying i think $130 for a dummy pully. Can i just get a shorter belt? will i need to change the belt path? i would just try to figure this out myself, but im sure somone has done it and i dont have any of the front part of my engine back on yet. ThanksMatt
Safety Car
Joined: Oct 2001
Posts: 4,763
Likes: 2
From: Connectivette
My feeling is half the appeal of the delete kit is how it cleans up the engine. Someone out there in C4 land may have one kickin around. Try posting a thread in C4 parts for sale as you might be able to pick one up for a song.
Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
you can't just use a shorter belt
but i relocated my alternator to where the air pump was (had to fab a couple flat brackets from alum plate) aaaaannnnndddd used a shorter belt (93 chev van v6 no air, i think-its writen on a note out in the car--i'll check if u need it)
but i relocated my alternator to where the air pump was (had to fab a couple flat brackets from alum plate) aaaaannnnndddd used a shorter belt (93 chev van v6 no air, i think-its writen on a note out in the car--i'll check if u need it)
Team Owner
Joined: Feb 2006
Posts: 24,460
Likes: 7
From: sw Ohio
Yeah I find the A.I.R. pump pretty annoying. By deleting it what do you gain? I mean if you just replace it with a dummy pulley it will still have the same amount of drag unless its a performance pulley, in which case I could understand why it would be an expensive kit.
Le Mans Master
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Originally Posted by 4Ever21
Yeah I find the A.I.R. pump pretty annoying. By deleting it what do you gain? I mean if you just replace it with a dummy pulley it will still have the same amount of drag unless its a performance pulley, in which case I could understand why it would be an expensive kit.
Team Owner
Joined: Sep 2001
Posts: 62,186
Likes: 1,741
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Originally Posted by 4Ever21
By deleting it what do you gain?
It wont give you any power gain, as the pulley on the AIR spins pretty freely.
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Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
relocating the alternator up to where the air pump was puts the alternator in a higher air flow area and allows more air alongside the motor...with the alternator up there is no need for any new pulley
you can get a good guess at what your ''re-engineered'' belt length needs to be by running your yo-yo (steel measuring tape) around the belt path ...go to the parts store and belt part numbers indicate length and number of grooves--tell the parts guy you're brewing something and will need to exchange a couple times to get it right cause you will (never had the parts guy say no to me)
you can get a good guess at what your ''re-engineered'' belt length needs to be by running your yo-yo (steel measuring tape) around the belt path ...go to the parts store and belt part numbers indicate length and number of grooves--tell the parts guy you're brewing something and will need to exchange a couple times to get it right cause you will (never had the parts guy say no to me)
Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
i've got a $20 digital camera and would be glad to post--just tell me where to go (to find out how to post em)
belt i've got on now is a napa 25-060780...i think the ''06'' means 6 groove, and 0780 means 78 inches long (seems like the right length--old age,the mind is second to go)...i'm using the cs-130 alt now cause it look better--i had a cs140 on earlier and that needed a belt 1 inch longer because brackets were higher to clear the rocker cover
belt i've got on now is a napa 25-060780...i think the ''06'' means 6 groove, and 0780 means 78 inches long (seems like the right length--old age,the mind is second to go)...i'm using the cs-130 alt now cause it look better--i had a cs140 on earlier and that needed a belt 1 inch longer because brackets were higher to clear the rocker cover
Last edited by redrose; Mar 27, 2006 at 11:49 AM.
Racer
Joined: Aug 2002
Posts: 386
Likes: 0
From: Lancaster Lancashire
redrose,
Posting pictures is something I have never done...yet. I have only just moved into the digital camera age myself and have difficulty viewing pictures on my PC never mind posting them on a forum. Unfortunately it looks like you have as much idea on the subject as I do (none).
Anybody help out on this one?
Dave
Just looked in the FAQ section and there are some instructions on attachments, I don't know if that would work or not??
Posting pictures is something I have never done...yet. I have only just moved into the digital camera age myself and have difficulty viewing pictures on my PC never mind posting them on a forum. Unfortunately it looks like you have as much idea on the subject as I do (none).
Anybody help out on this one?
Dave
Just looked in the FAQ section and there are some instructions on attachments, I don't know if that would work or not??
Last edited by Davemc1963-87conv; Mar 27, 2006 at 04:22 PM.
Pro
Joined: Dec 2004
Posts: 674
Likes: 1
From: Daytona Beach Florida
undefined
How does the car adjust to not having an operational air pump?
Will it run worse without it?
Originally Posted by RICEKILA
FYI-- I read some place (here) the "84" is the only vette that can use a shorter belt w/ pump off. I'll find out this summer 
How does the car adjust to not having an operational air pump?
Will it run worse without it?
Safety Car
Joined: Feb 2005
Posts: 4,721
Likes: 1
From: Beautiful Down Town "SWINDLEHURST" Long Island NY
From what I can remember reading -- motor looks better, less parasitic loss ( 1-2 more HP maby more) , one less thing to brake and squeal,and a few other reasons ( I don't like the looks of it eather) do a search--I did
PS Edit-- and some thing about closed and/or open loop?
2ed.PS Edit-- also takes 5lbs.(?) off front end.
PS Edit-- and some thing about closed and/or open loop?
2ed.PS Edit-- also takes 5lbs.(?) off front end.
Last edited by RICEKILA; Mar 27, 2006 at 10:12 PM.
Team Owner
Joined: Jan 2003
Posts: 20,342
Likes: 264
From: Summerland B.C. Canada
If your handy, you can make your own. Here's some info on one i put together. All measurements were taken from my 86, but should still work for your year. 
http://members.shaw.ca/dankai/Air%20...Delete%20Info/
http://members.shaw.ca/dankai/Air%20...Delete%20Info/
Team Owner
Joined: Sep 2001
Posts: 62,186
Likes: 1,741
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Originally Posted by Bubba91
How does the car adjust to not having an operational air pump?
Will it run worse without it?
Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
and don't feel guilty about "wrecking the environment"--96 impala lt1 were such a gm headache with a.i.r. pump that gm has a federally approved ''field delete'' of the a.i.r....proves how much it must really be worth