1983 Toyota Celica GT-S - Message Forum (Re: Egr valve$$$$$)

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Re: Egr valve$$$$$

Posted By: Steven Benner

Posted On: July 15, 2002 at 2:33 pm EDT

luis wrote:

> Does any body know if it is po
> sible to get the egr valve off
>  the engine for good,can this
> be done whith out messing up h
> ow the engine works and doi do
> nt care about emisions

Actualy removing the EGR is easy and very common. Many all race people remove the EGR, PCV, cat, and any other emmisions stuff as the first move to more power. You just need a set of EGR block off plates. Pull the EGR valve and bolt the block off plates to the holes for the egr. You'll have to play with the vacuum lines a little. I'd just cap em off at the plenum (or was it TB).

This really is a 'race only' mod. Believe it or not the EGR is more than an emissions control device. The effect of letting some burnt gasses into the combustion chamber is that they dilute the air/fuel charge. Since burnt gasses won't ignite again. This lowers the combustion temps. This keeps the engine cooler as well as reducing NOx. It would be wise to have an exhaust gas temperature gauge before doing this mod. Don't let it rise too much.

Another, more legal, option is to simply restrict the EGR flow. I can provide more details after I do it but you dust drill a 1/4" hole in a 3/8" pipe plug. Then tap the EGR inlet at the back of the manifold and screw it in. Install the EGR and it looks like stock. Still works, and reduces the EGR flow wich is supposed to supress 'stumble'.

>  all ready dont pass cause to
> the places i go to have it don
> e no body wants to doit cause
> all the stuff that i have unde
> r the hood(msd coil & wires my
>  cold air ram air kit etc)they
>  just look at me and say that
> i have to put all the original
>  stuff back in

That isn't right. Where are you? The entre setup offered by MSD is completely street legal (EVEN IN CALI!) That is what the silver stickers they give you say. And the ram air is questionable but just remove the hose and then it will be a simple (legal) open element filter.

Steve

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Re: Egr valve$$$$$ - luis 07/16/02 (0)

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Message:	Steven Benner wrote: > luis wrote: > > > Does any body know if it is > po > > sible to get the egr valve o > ff > > the engine for good,can thi > s > > be done whith out messing up > h > > ow the engine works and doi > do > > nt care about emisions > > Actualy removing the EGR is ea > sy and very common. Many all r > ace people remove the EGR, PCV > , cat, and any other emmisions > stuff as the first move to mo > re power. You just need a set > of EGR block off plates. Pull > the EGR valve and bolt the blo > ck off plates to the holes for > the egr. You'll have to play > with the vacuum lines a little > . I'd just cap em off at the p > lenum (or was it TB). > > This really is a 'race only' m > od. Believe it or not the EGR > is more than an emissions cont > rol device. The effect of lett > ing some burnt gasses into the > combustion chamber is that th > ey dilute the air/fuel charge. > Since burnt gasses won't igni > te again. This lowers the comb > ustion temps. This keeps the e > ngine cooler as well as reduci > ng NOx. It would be wise to ha > ve an exhaust gas temperature > gauge before doing this mod. D > on't let it rise too much. > > Another, more legal, option is > to simply restrict the EGR fl > ow. I can provide more details > after I do it but you dust dr > ill a 1/4" hole in a 3/8" pipe > plug. Then tap the EGR inlet > at the back of the manifold an > d screw it in. Install the EGR > and it looks like stock. Stil > l works, and reduces the EGR f > low wich is supposed to supres > s 'stumble'. > > > all ready dont pass cause t > o > > the places i go to have it d > on > > e no body wants to doit caus > e > > all the stuff that i have un > de > > r the hood(msd coil & wires > my > > cold air ram air kit etc)th > ey > > just look at me and say tha > t > > i have to put all the origin > al > > stuff back in > > That isn't right. Where are yo > u? The entre setup offered by > MSD is completely street legal > (EVEN IN CALI!) That is what > the silver stickers they give > you say. And the ram air is qu > estionable but just remove the > hose and then it will be a si > mple (legal) open element filt > er. > > Steve
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