C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

what does the egr valve ?

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Old Feb 15, 2003 | 10:50 PM
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Default what does the egr valve ?

?
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Old Feb 15, 2003 | 10:58 PM
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Default Re: what does the egr valve ? (Eduardo L98 1991)

Exhaust gas recirculation!
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Old Feb 15, 2003 | 11:50 PM
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Default Re: what does the egr valve ? (Eduardo L98 1991)

It causes some of the exhaust gas to be burned again. This reduces some pollution.
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Old Feb 16, 2003 | 12:07 AM
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Default Re: what does the egr valve ? (Lone Ranger)

thanks for your answer

Ok, I don´t but If i have a faulty one, can this affect the performance of the car ?
why some people cancel this, more power ? how ?
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Old Feb 16, 2003 | 12:27 AM
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It also cools cylinder temperatures.
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Old Feb 16, 2003 | 12:49 AM
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Default Re: (scorp508)

Scorp, at last somebody that I know, wow ! 43131 posts !,you still leaving here, cheers !
How is the superram setup ?


I don´t have cats and soon I will take out the air pump because is making noise.
If I take out the egr I supose that I need something to send the signal to the ecm ?
Or simply do not take out the egr !, I only want to know my options.

Scorp:

When I spent time here you are new but after 43131, I supose that you are a guru, where is vettenuts and paul ?

I will post soon about problem with my engine, I sent the car to the chevrolet and told me everything is ok, I conect a snapon scanner and told me everything ok, but the feels underpowered, hope you can help me in my future post.
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Old Feb 16, 2003 | 04:07 AM
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Default Re: what does the egr valve ? (Eduardo L98 1991)

'scuze me forum brothers, gonna use my spanish :D
Ed,
Este sistema no debe funcionar al arrancar, o menos de 150 grados de temperatura en el coolant. Tampoco en WOT o en open loop mode.
La valvula basicamente es para reducir oxidos de nitogeno por medio de la introduccion de exhaust saliendo del cilindro. Ala vez, enfria y reduce dramaticamente cascabeleo. Se dice que el EGR reduce el 7 porciento total del volumen(Y tambien rendimiento) de nuestros motores 350. Haz de cuenta que es un 345 mienras el ECM este mandando la senal al EGR solenoid diciendole "cierra la valvula".
Una pregunta: Vas a usar un smog pump eliminator pulley?
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Old Feb 16, 2003 | 04:26 AM
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Default Re: what does the egr valve ? (89 Paul in Cal)

Paul:

¡Gracias !, gusto en saber de tí.

Thanks for your explanation, yes I´m planning to use a smog pump eliminator, why ? do you wil sell me one at very affordable price.

Regards

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Old Feb 16, 2003 | 05:19 AM
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Default Re: what does the egr valve ? (Eduardo L98 1991)


why ? do you wil sell me one at very affordable price.
:D
No, I was just curious on how you were going to route the belt. Voy a eliminar mi smog pump tambien, pero no quiero usar el eliminator pulley. Maybe I'll relocate the alternator to the smog pump location and use a shorter belt.


[Modified by 89 Paul in Cal, 2:20 AM 2/16/2003]
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Old Feb 16, 2003 | 06:11 AM
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Default Re: what does the egr valve ? (89 Paul in Cal)

Why not just run a blower on the pulley instead? ;) I was thinking of getting rid of my noisey smog pump, but was shocked at the price of the eliminator bracket. I'll make one myself before I pay that price. Or, you could go ricer style, and route the air pump to the intake for extra boost! :lol: It's gotta work as good as hooking up those little nos capsules that sell on ebay.
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Old Feb 16, 2003 | 01:00 PM
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Default Re: what does the egr valve ? (Eduardo L98 1991)

I have an explanation of the EGR system on my site.
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Old Feb 16, 2003 | 09:17 PM
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Default Re: what does the egr valve ? (65Z01)

People People People!!! The EGR valve does not effect WOT performance it only operates at cruise speeds.. it is shut off at idle for the purpose of smooth idle and shut off at WOT so that you can have max performance.. it reduces combustion temps, increases fuel economy because exhaust gases take up some of the combustion volume it mean less ait intake and less fuel intake at cruise speeds.. also reduces oxides of nitrogen NOX a very harmful gas.. some states may test for nox I believe it will be coming soon to IL too.. the testing for that gas that is.. usually they test it but don't count it if you go through lane 1 at the test stations here in IL.. anyway EGR is a good thing! if someone can tell me otherwise I would like to know I'm curious to learn all sides of the story.. but thats the sides and key points I have come to learn through hands on expeiance and formal training..
-Rick :chevy

No sticking bb's in the vac hose for me..
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