air pump bypass question?
Drifting
Joined: Oct 2003
Posts: 1,594
Likes: 0
From: CALGARY ab
Originally Posted by 91superram
What are the HP gains when a air pump eliminator kit is installed in a L98
some advantages to eliminate air pump includes engine performance
(up to at least 5hp , if not more), compartment clauder, alternate choices between Air pump eliminators or replacing stock pump...the decision is totally up to you.. i have choosen to remove air pump and replaced it with my version of an Air Pump elimnator..
Racer
Joined: Jun 2005
Posts: 284
Likes: 2
From: Burton Texas
Originally Posted by korvette4u
it was mentioned in several threads that the air pump does use about 5hp when operating...to say no increase in hp when it is absent is not EXACtly true.
some advantages to eliminate air pump includes engine performance
(up to at least 5hp , if not more), compartment clauder, alternate choices between Air pump eliminators or replacing stock pump...the decision is totally up to you.. i have choosen to remove air pump and replaced it with my version of an Air Pump elimnator..
some advantages to eliminate air pump includes engine performance
(up to at least 5hp , if not more), compartment clauder, alternate choices between Air pump eliminators or replacing stock pump...the decision is totally up to you.. i have choosen to remove air pump and replaced it with my version of an Air Pump elimnator..
Team Owner
Joined: Sep 2001
Posts: 62,159
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Saying that it uses power is false, when you think about the fact that the ECM kills everything when you got WOT, at which point no emissions equipment works. No EGR, AIR, and no O2 readings.
And the pulley thats on it already is already freely moving, so youre not getting back your parasitic loss.
And the pulley thats on it already is already freely moving, so youre not getting back your parasitic loss.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Drifting
Joined: Oct 2003
Posts: 1,594
Likes: 0
From: CALGARY ab
Originally Posted by vader86
Saying that it uses power is false, when you think about the fact that the ECM kills everything when you got WOT, at which point no emissions equipment works. No EGR, AIR, and no O2 readings.
And the pulley thats on it already is already freely moving, so youre not getting back your parasitic loss.
And the pulley thats on it already is already freely moving, so youre not getting back your parasitic loss.
....i think a little common sense is the issue....first the pump does not free wheel, once in operation the vains inside are forced to the pump wall producing positive air pressure which in turn is diverted as required or demanded by ECM..but it does not stop pumping. any essive air flow is diverted to atomsphere...
i do agree that it (air pump) is parasidic using some hp (power) to make it operational..this is a given.
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
Well, i didn't buy an eliminator kit... i just took the pump off and used a string the find the right lenght belt that would work without the air pump installed... $120 for some bull ****.. hell with that. Shorter belt works just fine for me.
Team Owner
Joined: Sep 2001
Posts: 62,159
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Originally Posted by korvette4u
saying that the air pump uses zero hp(power) is false!....in other words you are telling me that is "air pump" is an effiency device and operates by it self....well now that's interesting. oh , of course WE ALL travel at wide open throttle most of the time ....i think a little common sense is the issue....
first the pump does not free wheel, once in operation the vains inside are forced to the pump wall producing positive air pressure which in turn is diverted as required or demanded by ECM..but it does not stop pumping. any essive air flow is diverted to atomsphere...
i do agree that it (air pump) is parasidic using some hp (power) to make it operational..this is a given.
....i think a little common sense is the issue....first the pump does not free wheel, once in operation the vains inside are forced to the pump wall producing positive air pressure which in turn is diverted as required or demanded by ECM..but it does not stop pumping. any essive air flow is diverted to atomsphere...
i do agree that it (air pump) is parasidic using some hp (power) to make it operational..this is a given.
No, when you want your horsepower, its ALL there. At WOT everything gets cut off, EGR/AIR/Compressor, everything. So compared to the eliminator you should get zero hp, since the pulley on the AIR is as freely spinning as the eliminator's pulley.
Anything sitting there will eat parasitically at anything less than WOT.
If you get rid of it entirely and get a shorter belt, then you get the power back. Otherwise you dont get sh** besides weight savings and aesthetics.
Drifting
Joined: Oct 2003
Posts: 1,594
Likes: 0
From: CALGARY ab
Originally Posted by vader86
READ WHAT IM TELLING YOU
No, when you want your horsepower, its ALL there. At WOT everything gets cut off, EGR/AIR/Compressor, everything. So compared to the eliminator you should get zero hp, since the pulley on the AIR is as freely spinning as the eliminator's pulley.
Anything sitting there will eat parasitically at anything less than WOT.
If you get rid of it entirely and get a shorter belt, then you get the power back. Otherwise you dont get sh** besides weight savings and aesthetics.
No, when you want your horsepower, its ALL there. At WOT everything gets cut off, EGR/AIR/Compressor, everything. So compared to the eliminator you should get zero hp, since the pulley on the AIR is as freely spinning as the eliminator's pulley.
Anything sitting there will eat parasitically at anything less than WOT.
If you get rid of it entirely and get a shorter belt, then you get the power back. Otherwise you dont get sh** besides weight savings and aesthetics.
using a shorter belt may not simple cure the parasite, as there is definately a clearance problem. The belt passes over the power steering pump, around the altenator and then back under the water pump pulley. it is at this very area the belt has NO CLEARance as the angle /hieght of the alternator does not allow for this to be accomplished. hence an alturnative solution "air pump eliminator". some keep the hieght at the same elevation as the AIR PUMP, while others will drop the belt lower into the motor compartment.
Last edited by korvette4u; Jul 15, 2005 at 12:09 AM.
Team Owner
Joined: Sep 2001
Posts: 62,159
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
What youre saying is that the AIR is still sitting there and the drivebelt spinning it always spinning the vanes....well whoopee doo, if you gut the pump you get rid of the vanes and you just have a wheel.
If you dont gut the pump, you still have a wheel, that thing doesn't give me any resistance when I spin it by hand.
Maybe your eliminator is made from space-age technology with no measureable coefficient of friction, but that thing isnt going to give me anything I can measure. I have seen people dyno them, and get nothing whatsoever, and those that have cannot say that the eliminator gave them the power by itself.
If you dont gut the pump, you still have a wheel, that thing doesn't give me any resistance when I spin it by hand.
Maybe your eliminator is made from space-age technology with no measureable coefficient of friction, but that thing isnt going to give me anything I can measure. I have seen people dyno them, and get nothing whatsoever, and those that have cannot say that the eliminator gave them the power by itself.
Last edited by vader86; Jul 15, 2005 at 01:04 AM.
Drifting
Joined: Oct 2003
Posts: 1,594
Likes: 0
From: CALGARY ab
Originally Posted by vader86
What youre saying is that the AIR is still sitting there and the drivebelt spinning it always spinning the vanes....well whoopee doo, if you gut the pump you get rid of the vanes and you just have a wheel.
If you dont gut the pump, you still have a wheel, that thing doesn't give me any resistance when I spin it by hand.
Maybe your eliminator is made from space-age technology with no measureable coefficient of friction, but that thing isnt going to give me anything I can measure. I have seen people dyno them, and get nothing whatsoever, and those that have cannot say that the eliminator gave them the power by itself.
If you dont gut the pump, you still have a wheel, that thing doesn't give me any resistance when I spin it by hand.
Maybe your eliminator is made from space-age technology with no measureable coefficient of friction, but that thing isnt going to give me anything I can measure. I have seen people dyno them, and get nothing whatsoever, and those that have cannot say that the eliminator gave them the power by itself.
if you gut the pump...no vanes result in no air compression..this then is the same as FREE WHEEL i agree to this..you gots it finally...however there is drag both in air pump without vanes AND air pump Eliminator.. the friction coefficient is SLighly less with the eliminator (only one bearing to turn) as would be two bearings with the air pump(front and rear, results in definate more fiction). doubt very much "space-age technology" ,spinning by hand , is accurate enough to determine. however, actual testing would yield drag coeifficient for either..
BTW; i have a uncle whom knows a friend, that is a friend of a friend, that know the same guys that you speak of
. just joking, perhaps proof is in the pudding? 
