Removing EGR equipment
Thread Starter
Racer
Joined: Jul 2001
Posts: 368
Likes: 0
From: Tampa FL
Removing EGR equipment
Any down sides? This stuff is taking up half the engine compartment. What about the belt, do you gut the air pump so it's just an idler pulley? I don't have an emissions inspection to worry about.
Thanks.
Thanks.
Burning Brakes
Joined: Apr 2000
Posts: 959
Likes: 1
From: Lemoore CA
Re: Removing EGR equipment (TJR)
I JUST did this a week ago or so when assembling my 383.... I was expecting a major mess as everything had been apart for months, but it went together without and problems. I used Breathless Performance's Air Pump elliminator. Cleans up the drivers side very nicely, but the real advantage is you can also remove the air cylinder thingy on the opposite side of the throttle body. Assuming your motor is the same as my 90 that is. I had hoses running from the Cataylitc converter, the ends of the headers.... all over the place. All of those are gone. I simply removed it and am left with PCV as well as a few (very few) coolant hoses throttle bypass there as well.. Anyway worked out very nice look into making or buying a bracket Id steer away from gutting the pump wouldnt clean up the compartment as nice.
Paul
:flag
Paul
:flag
Burning Brakes
Joined: Nov 2000
Posts: 1,040
Likes: 2
From: BowlingGreen KY
Re: Removing EGR equipment (TJR)
I gutted my air pump and removed all of the crap on the engine that is associated with it. If the fins on your pump are still good you will have to take a small chisel and break them out of the pump, but be carefull not to damage the large bearing in it. I don't know about removing the EGR, it could affect engine performance. :cool:
Thread Starter
Racer
Joined: Jul 2001
Posts: 368
Likes: 0
From: Tampa FL
Re: Removing EGR equipment (KYVette90)
I like the pump eliminator pulley. A little pricey, but it seems worth it. Any other ideas about what can and can't be removed? Does the EGR system do anything other than clean up the exhaust?
[Modified by TJR, 10:43 PM 9/27/2001]
[Modified by TJR, 10:43 PM 9/27/2001]
Thread Starter
Racer
Joined: Jul 2001
Posts: 368
Likes: 0
From: Tampa FL
Re: Removing EGR equipment (TJR)
Hmm, guess I should have looked around some more first.
http://autorepair.about.com/library/.../bldef-176.htm http://autorepair.about.com/library/.../bldef-165.htm
Sounds like something you don't want to remove. Then again, if you have headers and no cats, you probably wouldn't be able to keep it. ???
http://autorepair.about.com/library/.../bldef-176.htm http://autorepair.about.com/library/.../bldef-165.htm
Sounds like something you don't want to remove. Then again, if you have headers and no cats, you probably wouldn't be able to keep it. ???
Burning Brakes
Joined: Apr 2000
Posts: 959
Likes: 1
From: Lemoore CA
Re: Removing EGR equipment (TJR)
I was the same way you were Vette90.... I installed it and it was very very self explanatory.... I removed all the fitting on the end of the exhaust manifolds, in my case headers.... I removed the black air cylinders that lie opposite the throttle body passenger side And all hoses connecting any of it. It works out very well, although there is one connection running to the Cataytic converter that will be difficult to remove if not already done so (Already was for me so cant be of much help there) if you need more let me know.
Paul
Paul
Burning Brakes
Joined: Nov 2000
Posts: 1,040
Likes: 2
From: BowlingGreen KY
Re: Removing EGR equipment (TJR)
The EGR system recirculates exhaust gas back through the intake to lower combustion temps. If it is not on or is not working you could get a pinging noise that sounds like your lifters are rattling at certain speeds. :cheers:
Burning Brakes
Joined: Apr 2000
Posts: 959
Likes: 1
From: Lemoore CA
Re: Removing EGR equipment (KYVette90)
I would not suggest removing the EGR equipment, only the air pump related equipment. Ive never tried it but imagine from this and other info its not a good idea.
Paul
Paul
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Melting Slicks
Joined: Jun 1999
Posts: 2,872
Likes: 3
From: Wilmington NC
Re: Removing EGR equipment (Nomar116)
if your running an aftermarket cam, chances are there is enough overlap to render the EGR system useless. especially with the hot cam. the LT4 does not come from the factpry with an EGR system for this exact reason. so if your using a high performance cam with more overlap thent he stock bump stick, yanking the EGR will not do any harm!!
chris :smash:
chris :smash:
Safety Car
Joined: May 1999
Posts: 3,588
Likes: 1
From: Volcano, HI
Re: Removing EGR equipment (lcvette)
The question is, how much overlap is enough to provide egr effect? I've been having a few EGR problems with my setup that I never would have noticed if not for datalogging. My EGR duty cycle is way too high. I'd eliminate it and shut it off in the eprom if I knew for a fact I could get away with it...
Le Mans Master
Joined: Jul 2001
Posts: 6,252
Likes: 2
From: Silicon Valley Kalifornia
Re: Removing EGR equipment (TJR)
If you remove the EGR, get your ePROM updated so the the ECM dosen't try to activate it. Also, the ePROM will have to tell the ECM to deliver a wee bit more fuel. That way, you can take full advantage of the mod. :flag
[Modified by GRX, 12:11 PM 9/28/2001]
[Modified by GRX, 12:11 PM 9/28/2001]
Drifting
Joined: Aug 2000
Posts: 1,758
Likes: 4
From: Medford, Or
Re: Removing EGR equipment (TJR)
I removed the Cats, airpump, and EGR with no adverse effects from my '95 LT1. I left the relays intact so the computer thinks they're still there. I have yet to see a 'service light' come on. X-ray OBD-1 reader doen't show any failures. The Oxygen sensors have built in heaters, so removing Cats doesn't seem tobe a problem. Being my vette is a '76, I don't need to worry about smog testing in Washington State. I'm sure I would pass the smog test anyway.
Dan
Dan
Thread Starter
Racer
Joined: Jul 2001
Posts: 368
Likes: 0
From: Tampa FL
Re: Removing EGR equipment (TJR)
Ok, now that I've figured out where the air pump system ends and the EGR system begins, the air pump system is gone.
Since I gutted the main cat on Saturday, the air system is useless anyway. The EGR works off the #8 cylinder on the exhaust manifold, the other 7 are connected to the air system. I removed the 2 valves from the front of the engine (around the TB) and all the plumbing. For now, I capped off the tubes attached to the exhaust manifold, I'll amputate them later. I also removed the tube running all the way back to the main converter. The air pump is still there, pumping air to nowhere in particular. I'm going to order the air pump eliminator pulley from Breathless Performance. Running fine (other than some other unrelated problems). See other post :lol: http://forums.corvetteforum.com/zerothread?id=159238
[Modified by TJR, 1:23 AM 10/1/2001]
Since I gutted the main cat on Saturday, the air system is useless anyway. The EGR works off the #8 cylinder on the exhaust manifold, the other 7 are connected to the air system. I removed the 2 valves from the front of the engine (around the TB) and all the plumbing. For now, I capped off the tubes attached to the exhaust manifold, I'll amputate them later. I also removed the tube running all the way back to the main converter. The air pump is still there, pumping air to nowhere in particular. I'm going to order the air pump eliminator pulley from Breathless Performance. Running fine (other than some other unrelated problems). See other post :lol: http://forums.corvetteforum.com/zerothread?id=159238 [Modified by TJR, 1:23 AM 10/1/2001]
