how should i go about unhooking my EGR.. is there anything i should do other than plug that EGR pipe and on the manifold...??

 

well that is it. if you don't want to hook it back ever I would do away with the pipe and grind a bolt short stick it in the exaust, and it would make some more room.

 

so the cars gonna run fine without it?
is this just another emmisions crap...cuz if it is ..oh boy ima bring out the grinder...

 

I don't know if n/a's have a VCM, but you can do away with that too if you're not going to run the EGR anymore. The VCM's sole function is for the EGR to receive a signal on when to open and close. All you gotta do is just plug off the vacuum lines it attaches to and ground the blue wire. Should be fine.

 

Not to prod, but don't you need the EGR to pass emissions? I know here in AZ I do. Otherwise I would unhook mine too.

 

Some places you do have emisson check...but if you know a guy all is well...just don't get caught. I live with that everyday. :P If you have it where they stick a probe up your tailpipe, then leave the EGR valve in.

 

WELL HE LIVES IN HARIS COUNTY WITCH IS HOUSTON TEXAS YES THEY DO EMISIONS, i DON'T LIVE IN THE CITY OF HOUSTON, AND AM OUT OF REACH OF HARIS COUNTY, MY COUNTY DOSE NOT DO EMISIONS. iF HE UNPLUGS EGR WELL IT WILL RUN FINE BUT HE WILL PROBABLY GET A FINE.
OH YEA SKULLY WHATS THIS ABOUT THE GRINDER? i THOUGHT YOU LIVE IN CANADA, A LAW IN THE U.S. SHOULDN'T BOTHER YOU. i DIDN'T MEAN THAT IN A SMART *** MANNER I WAS JUST WUNDERING.

 

i live in canada...emissions? hellz no...ima get out the hacksaw...

 

well i do know a guy and my emissions passed with flying colors last time and my egr had apparently been stuck closed so when he released it..it threw my emissions alot lower but i was passing without it...and the guy told me it didnt matter so long as it passed...thats what happened when i last got it inspected...and now that my engine is being rebuilt with rebuilt injectors and new filters and gaskets and such evrthing will be running much cleaner and smoother so i dont think ill have much worry abouth that EGR..... i dont wanna cut or grind, just plug it up and render it inoperable... what should i plug the manifold with, i could easily find a plug for the exhaust?

 

for me if i remove it...ill make the back end of the manifold smooth and flat and make a cover plate and just bolt it in...

 

As for the mainfold, the bottom part where the EGR tube is I used a pipe plug. I can't remember the size, but when it comes to me I'll let you know. The part where the EGR lies. I took a piece of 1/4" metal, cut it out using the base of the EGR as a template, and use the nuts that held the EGR down to hold the metal piece down. For added seal I put a new gasket inbetween. As for the connection for the tube and exhuast...I guess using to same size pipe plug will work. My exhuast was so rusty there I just made up a new exhuast from the turbo back to the CAT.

 

Well I would probably just cut a piec of sheet metal, and jb weld it on

 

well i can see id need to do a lil metal fabrication which is all good and i could work somethin on that exhaust downpipe....theres rust but nothin a lil wd40 cant handle....

 

I took my EGR valve off, removed the studs, and then took my Sawzall and cut off the whole tab on the end. There is a square hole left I then had me buddy weld it up with alluminum. It looks great and cleanes up things nicely.

 

The EGR valve (Exhaust Gas Recirculation). is there for more than just cleaner emmisions. It brings raw, unburnt fuel back into the combustion chamber to mix with new fuel and new air. By doing this, several things result.

1. Less initial gas is used in the firing process.
2. Less raw emmisions reach the tail pipe.
3. Lower combustion chamber temp (much lower)
4. allows both more fuel AND air into to the combustion chamber because a cooler chamber means higher density is acheived.

Without the EGR functioning, you are running way too lean. it is very possible over time to burn a hole in the top of your pistons. If you want to run without the EGR, you need more fuel coming in to compensate... I.E... Bigger injectors, bigger fuel pump, Bigger fuel pressure regulator. Just because a part is emmisions related doesn't automatically condemn it to the "useless" pile or makes it a burden on performance. Car's without EGR's from the factory had altogether different set ups from the start, so it's not an issue.

If you plug the EGR tube and drive the car you won't notice any power increase, but you will notice a 10-15 degree difference in operating temperature at constant speeds, you will also notice that the temperature rises big time under heavy loads or hard acceleration.

Always know the upside and the downside before making a modification to your car for the sake of "improved performance".

Rod.

 

i just have a question.. how does EGR lower combustion chamber temp when it comes straight from the exhaust..i can see lower emissons..but a lower temp i dont see... could you explain to me then..i havent done anything yet because im looking for all anwsers before i go modifying..

 

It lowers the chamber temp because it introduces more fuel... more fuel means that the burning process takes longer... and therfore burns more effeciently. Just like higher octane fuel lowers the temp in the same manor. I know it's hard to imagine that hot exaust gas burns cooler, but it's like the mixture of o2 and acetlylene in a welders torch. If you have too much o2, the flame is too hot... Make sense now?


Rod.

 

i see... i wasnt thinking upon burning just intake temp because running higer boost increases temperature and adding exhaust would only increase that temperature which would would in fact cause it to start pinging or even worse, pre-detonate... but thats what an intercooler is for, im not running one but im increasing pressure slightly and i want to keep intake temp at a minimum...

 

The egr cycles inert exaust gas into your intake. the fuel economy aspect of it well I will tell you is not enough to make a differance, you may not even notice. It will not efect the running of the car, I have done this to several old cars from the 80's, and have never run into a problem. Inert gas means not combustable alone well it will affect the cars runing, but you wont be able to tell, because your not a computer.

 

that guy's smart

 

so the egr makes it run cooler ....hmmmm i seem it be running alittle hot i thought this was because i have a header and no heat sheilds .....but i also have no egr anymore.......... so mabe its all three ..... red seems to run right above the the F mark on the temp gau .... does any one have the same problem with heat that i seem to have ? and if so..... have you been able to fix it

 

the egr dose make it run cooler, the inert gas cycled into the intake takes up space, not allowing as much combustable air in, that would make it run as hot. um sounds like those three things could contribut to that.

 

does any one have a egr tube laying around when i put my header on i cut and crimped mine off but my header has the hole and same with the intake so i really just need the tube .....little help

 

The egr doesn't function during hard driving, only light driving. The whole point of the system is to lower combustion chamber temperature at part throttle when complete combustion does not take place, so that NOx doesn't form. NOx forms at extremely high temperatures, and the egr prevents this from happening during day to day driving. The only effect removing your egr will have, besides pissing off the smog ****'s, is the person stuck behind you on a hot day in traffic might get a little whoozy. Your car was designed to run lean. Thats why the egr is there, lean makes combustion heat. That's also why the O2 is there. To keep your car on the safe side. The only thing you'll probably notice by removing it is a 1-2% (if even that) decrease in gas mileage if you're a economical driver. If you got it pegged every time you drive, you won't even be able to tell its not there as long as you block everything off.

No I do not endorse the removal of any smog equipment. Unless of cours you put it back in time for smog check. HeHe. Honestly, it's not worth the effor unless you have a highly tuned engine putting up massive numbers and have complete control over your fuel system. No HP gain.

 

Go buy a 180 deg thermostat from Napa for $5.00
If that doesn't fix your temp 'problem' then you probably need to have the radiator flushed or replaced.