Air Pump Eliminator, Who uses it?
02-20-2005, 10:52 PM
#1
Burning Brakes
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St. Jude Donor '04 &'05
Air Pump Eliminator, Who uses it?
Just wanted to know the pros and cons. I have long tube headers with all the emissions tubing.
Last edited by 96zride; 02-20-2005 at 11:11 PM.
02-20-2005, 11:31 PM
#3
Drifting
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replaced air pump with bracket sometime ago..just installed new on 89
korvette4u air pump elimination
cleaned up compartment rather well...
Air pump and all of its related components can be removed.( precat and cat also) the egr system could also be removed...no codes will show unless 190*F Tstat is used, but can be fixed with doide.
this will certainly fee up some hp...how much?....opions vary from 10- 25 hp, i dont know if a dyno has been done to prove this..
i believe there's one in the for sale section:
http://forums.corvetteforum.com/show....php?t=1018836
korvette4u air pump elimination
cleaned up compartment rather well...
Air pump and all of its related components can be removed.( precat and cat also) the egr system could also be removed...no codes will show unless 190*F Tstat is used, but can be fixed with doide.
this will certainly fee up some hp...how much?....opions vary from 10- 25 hp, i dont know if a dyno has been done to prove this..
i believe there's one in the for sale section:
http://forums.corvetteforum.com/show....php?t=1018836
Last edited by korvette4u; 02-21-2005 at 11:37 AM.
02-21-2005, 12:05 AM
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Shouldnt free up any HP, just a cosmetic mod basically.
Last edited by vader86; 02-21-2005 at 12:10 AM.
02-21-2005, 01:03 AM
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No that would be pretty much proven, it doesnt give you back any power, the pulley on the AIR spins pretty freely. It does remove about 10lbs. from the front end though. No dyno test has shown any substantial gain, nothing more than a couple HP, which is a variance you would expect on 2 tests on an untouched car.
Last edited by vader86; 02-21-2005 at 01:08 AM.
02-21-2005, 01:18 AM
#8
Melting Slicks
Originally Posted by REDC4CORVETTE
I run one on my L98.I am still looking for an AC replacement pulley if you here of one let me know.
this is a direct bolt in, and a gm part.
http://www.gmpartsdirect.com/results...umber=10055890
Randy
I see yours is newer then mine. I have a 85, so make sure they use the same ac bracket before you buy it.
02-21-2005, 08:19 AM
#10
I bought it and swapped it out at the track. Gave my car nothing in the 1/4 mile. The hooker headers prevented me from using the rear alternator brace. This caused my alternator case to snap in half 3 hrs from home. If you use it make sure the rear of the alt is supported well.
02-21-2005, 09:22 AM
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Originally Posted by Pete K
This caused my alternator case to snap in half 3 hrs from home. If you use it make sure the rear of the alt is supported well.
The alternator has a support that bolts to the engine at the exhaust manifold and most people with headers get rid of it, but you really need that support or your alternator will crack, the AIRs brace holds it steady from above well enough so that this doesnt happen. But when you do the eliminator without modifying the rear support, the alternator is just hanging there and will crack.
02-21-2005, 09:32 AM
#13
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My pump was dying last year so i removed it and built an eliminator. I am still using the rear alt support with this setup. It has worked perfect since install and sure cleans up the engine bay and makes removing the valve cover a snap.
Last edited by AGENT 86; 02-21-2005 at 03:19 PM.
02-21-2005, 10:08 AM
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St. Jude Donor '03
Originally Posted by 96zride
Just wanted to know the pros and cons. I have long tube headers with all the emissions tubing.
02-21-2005, 11:20 AM
#15
Originally Posted by AGENT 86
My pump was dying last year so i removed it and built an eliminator. I am still using the rear alt support with this setup. It was worked perfect since install and sure cleans up the engine bay and makes removing the valve cover a snap.
02-21-2005, 12:00 PM
#16
Melting Slicks
Originally Posted by 85vet
Randy,
Did the bracket work on an 85?
Looks interesting.
If it works - thanks for the link.
Did the bracket work on an 85?
Looks interesting.
If it works - thanks for the link.
Randy
02-21-2005, 12:22 PM
#17
In my '85, I didn't like the look of the eliminator pulley... So I took the air pump apart, hollowed it out, polished it a little a put it back on.
I have no data to back up my beliefs, but I really do think that had to free up some power. The pump I took off definitely was not a 'free spinning pulley.' But what I put back on was. Maybe it was just the fresh bearing grease I added.
I have no data to back up my beliefs, but I really do think that had to free up some power. The pump I took off definitely was not a 'free spinning pulley.' But what I put back on was. Maybe it was just the fresh bearing grease I added.
02-21-2005, 01:24 PM
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I rebuilt my l98, stroked it it a 383, put ported vortec heads on, a 780 holley, and LEFT the pump on! I have NO emmissions laws, either. What I used it for was as a pump on my crankcase. Ever see those vacuum pumps advertised in jegs for hundreds of dollars, that need rebuilt every few passes? I set the pump up just as one of those, as a crankcase evecuation pump. It works GREAT!
So you might consider actually re-plumbing it instead of spending the money to make/buy a bracket. It does make a difference.
So you might consider actually re-plumbing it instead of spending the money to make/buy a bracket. It does make a difference.
02-21-2005, 01:46 PM
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Originally Posted by VictorRussell'92
Your name says 96.....So you don't have a belt driven AIR pump BTW....You have an eletric pump and OBD2 which is a whole nuther can o worms....
