Official 420A EGR Block-off Disscussion 2007

[bling5tatus]

^^ was that using the lean burn rom image?

 

[dsm-onster]

nope. a cam upgrade and staying out of boost and following some of the suggestions in this tech article, How To Save Gas, is what helped.

 

[Woot]

Check this out guys.... I think this is what you are trying to accomplish.
This should block the exhaust and only draw in fresh air when the EGR vacuum calls for it.

Note: On metered air vehicles, this may cause a slight 'lean' condition.

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A picture's worth a thousand words.......

In the final picture where it show how to properly do it, does the egr pipe still need to be hooked up or can the egr just draw in the hot air and release it back into the atmosphere?

I know your suppose to block off the head part but I'm installing msns so I was planning on sticking my sensors in the egr tube's place.
Thanks.

 

[Locke]

Go back over the rest of the thread. It is explained in detail. In the post you quoted of LethalEagles, he was mistakenly assuming the 4g63 valve, rather than the 420a.

 

[InfiniteGSX]

I got a question... Does it matter where the EGR is (if relocated)? As long as it does the same function right? Cause I was thinkin about making my own pipe from the EGR to the IM so the EGR can be placed under the IM and out of the viewable distance... and the tube can just go to the Intake right after the Filter.

 

[Locke]

I don't see why that wouldn't work.

and the tube can just go to the Intake right after the Filter.

I assume you are talking about how to bring in the fresh air, here? The cold side of the EGR valve must be after the TB. The hot side can be somehow plumbed into the intake path before the TB to receive fresh filtered air.

 

[XMasta19]

I hear a lot of talking and ideas, but no pictures...

Just get a traditional block-off kit or keep your egr system, done

 

[InfiniteGSX]

I don't see why that wouldn't work.



I assume you are talking about how to bring in the fresh air, here? The cold side of the EGR valve must be after the TB. The hot side can be somehow plumbed into the intake path before the TB to receive fresh filtered air.

No, I'm talking about moving the EGR itself to some place under the intake manifold, with a custom tube to go from it to the intake manifold... and then a plate to block the head side... just to make it look like there isn't any.

 

[eclipsers-t]

No, I'm talking about moving the EGR itself to some place under the intake manifold, with a custom tube to go from it to the intake manifold... and then a plate to block the head side... just to make it look like there isn't any.

That just sounds like too much unnecessary work for me.

 

[unlmtdndeavor]

i have 2 vacuum lines. 1 that goes to my mbc and wastegate. the other to my bov and map sensor. so simple

 

[BigRand]

i have 2 vacuum lines. 1 that goes to my mbc and wastegate. the other to my bov and map sensor. so simple

fuel pressure not imporntant?..., but I see your logic, definately simple.

 

[fullmoon]

I don't see any gains from blocking it off other than a light in ya face all the time.
But I got a better idea from another eclipse owner, I tried it and it works!

I still have my stock tube on (This works for after market intakes too!) and what I did was install a see through fule filter inline between the valve cover and the intake tube and it catches the vapors before they can go back into the motor so ya gotta get extra small tube about 1.5 feett long ### it's gotta wrap around ya bay a bit because the filter I used is kinda big I think it goes on a Chevy but there should be smaller ones on the market you could try but I think the Chevy is the best match becuse of the tube diameter.

Sorry I don't know what a turbo bay looks like but I'm sure you guys can figure it out.

I can see the filter slowly get clogged as time goes by so my motor don't suck the gunk back in.

One day I have time I post pics if you guys wanna see it.

Cost about 5-10 bucks and no check lights!

Ohhh my bad Lock I thought you guys were talk'n about the other thing on top of the valve cover sorry about that, I keep foot in mouth next time
Oh well at least it's a good idea!

 

[Locke]

I don't see any gains from blocking it off other than a light in ya face all the time.
But I got a better idea from another eclipse owner, I tried it and it works!

I still have my stock tube on (This works for after market intakes too!) and what I did was install a see through fule filter inline between the valve cover and the intake tube and it catches the vapors before they can go back into the motor so ya gotta get extra small tube about 1.5 feett long ### it's gotta wrap around ya bay a bit because the filter I used is kinda big I think it goes on a Chevy but there should be smaller ones on the market you could try but I think the Chevy is the best match becuse of the tube diameter.

Sorry I don't know what a turbo bay looks like but I'm sure you guys can figure it out.

I can see the filter slowly get clogged as time goes by so my motor don't suck the gunk back in.

One day I have time I post pics if you guys wanna see it.

Cost about 5-10 bucks and no check lights!

I presume you are talking about the PCV/VC Breather. I don't see what this has to do with blocking off the EGR valve? Maybe I am missing something?

 

[InfiniteGSX]

That just sounds like too much unnecessary work for me.

Yeah, could be... But for me to get that ugly crap out of the picture, Its worth it! The car's just sittin there anyway!

 

[unlmtdndeavor]

fuel pressure not imporntant?..., but I see your logic, definately simple.

oh yeah, that's right...one there too..HAHAHA

 

[XMasta19]

I presume you are talking about the PCV/VC Breather. I don't see what this has to do with blocking off the EGR valve? Maybe I am missing something?

I think he's the guy missing a little something in that post, this is great

 

[link16]

I feel like a thread necromancer....


Infinite: I will do what you were trying to do soon, I will take some pictures and maybe do a simple write up.

-Alex

 

[InfiniteGSX]

What? Just relocate the EGR to some place under the intake manifold? So its still being used, but out of the flippin way? I don't think it would be hard... Just a little 6" tube from Home Depot, or Lowes, leave it straight or bend it down to make some kinda dump tube, and weld the flanges on, bolt it on, hook the vacume line up, and install an EGR Block off Plate onto the Head. Boom, Done, you don't have to ever see that ugly thing again.

I'll be doing it sometime this winter, during the build... But its not on my urgent to do lists.

I just still don't understand this as being bad for boosted cars? Its meant to suck in air, into the intake manifold... but on a boosted car... that would be one hella boost leak?

 

[BigRand]

Only really big problem I could see is that you are introducing HOT, unfiltered air back into the mix, it might disrupt the "flow" I really don't know....but thats where my thinking leads me.

I did the block off a couple months back, Good idea for me since I don't care about CEL because of MS and my egr pipe was cracked to begin with.

Now I just gotta clean my IAC at some point.

 

[InfiniteGSX]

Unfortunately, I'm within less then a mile of where I don't have to do Emissions Tests. I could send some of my bills to my friends house who's past that line, but I would have to setup my registration or something to his house so I dont have to do Emissions.

I dont get where your saying hot air being sucked in, and screwing up the flow? Its either dirty exhaust gas, or filtered (yes you can filter it) warm air, or CEL.

 

[VelocitàPaola]

CEL it is...

Josh, the EGR valve closes at WOT, so there wouldn't be any boost leak.

 

[link16]

I will do a write up to help clear this up, Paul you should develop an idiot proof, yet tru EGR bypass. I would much rather see more thought put into the EGR bypass method.

On many cars a failing EGR valve may cause engine damage. It has been proven in many Nissan's; my 300zx a very similar setup; it pulled gasses from one of the headers and put it back into the plenum. Many Z32 owners have reported "premature" engine failure due to their EGR system not functioning properly.

This is my .02 I will try and develop a system that does not hurt the engine but does bypass the system.

-Alex

 

[Shadow98]

Alex, how do you still have your EGR hooked up if your using the Portfueler..?

 

[Slippi84]

I'm not sure if it's just me but I don't see why people say you can't use a egr system with a obx manifold or venom. I just put mine on it was simple. There was a tap with a big barb fitting on the manifold already cause the guy before me had it tapped for sensors and what not. I cut the flang off the egr pipe at the manifold end and used heat resistant muffler hose(same as turbo return line) and hook up a very short section that connects the pipe with stock everything else egr wise to to the barb fitting problem solved.

 

[link16]

Alex, how do you still have your EGR hooked up if your using the Portfueler..?

The HRC instructions explain how; you would cut the pipe and add in about a 2" high temp hose extention.

I am only 12 months from having to retake emissions; I need to figure out how to clear this EGR code. I am just so lazy, I will do it sometime soon.