EGR Filter

[landtoy80]

The EGR feeds the intake chamber with raw exhaust from the manifold, unfiltered.
With all the carbon that we have seen in the modulator, I wounder how much carbon goes into the intake when the EGR is open.
I was thinking "If I could put a filter (EGR Filter) on there, would that save any damage (if any) from that evil carbon?'

If I could find a filter that could hold up to exhaust temp, would this be a good idea or should I go back under the Turd and get more rust in my face?

 

[semlin]

um, aren't you defeating part of the purpose of the EGR if you do that? Isn't the idea that the engine burns some of this stuff up the second time around so it does not emerge in the exhaust.

 

[yooper]

I hate the f'ing EGR.  The inside of the intake plenum on my 3FE had a 1/4" thick layer of greasy, fuzzy carbon on its entire inside surface when I took it off at about 130,000 miles.  Cleaning it out was like doing a port and polish job.  Did I mention that I hate the EGR? F'ing EGR! 

 

[landtoy80]

yooper, I will put you down for one 3FE EGR filter.
I think I will be rich when I get done selling my "new idea"
The Landtoy80 EGR Filter

 

[landtank]

He Heeeeeeee . I just flashed on a Beverly Hillbillys episode when Jethro build a smog filter.

I want photos

 

[Junk]

Kurt, put me down for an advance order of a few thousand of those things.

The EGR is poison.

 

[landtoy80]

My filter will keep out carbon but not exhaust gas.
The buildup where the EGR port mixes in the intake chamber if from when the exhaust gas mixes with the outside air, inside the chamber.
#1 is where the exhaust gas enters the intake chamber port.
#2 is where is exist the intake chamber port.
See the carbon in #1.
#2 is something else. To me it looks like a gas that turned into a solid when exposed to air. Must have something to do with chemistry. ( I don'tid lerned well in schoul)

 

[landtoy80]

I have the old EGR cooler from the FJ60. The fj60 can run without it.
If the hose fitting are the same I might be able to fab something.

 

[landtank]

cooling down the exhaust gasses will only ensure a P401 as the lower temps will make the ECU think there is low flow.

 

[landtoy80]

FUDGE Someone beat me to the EGR filter.
VW, LR, Mercedes and even Heep CJ5 has a EGR filter.
But the link does give me a good start at making one for the 80
http://www.northernautoparts.com/ProductDetail.cfm?ProductId=1717

 

[MoJ]

[quote author=landtank link=board=2;threadid=13977;start=msg129914#msg129914 date=1080697942]
He Heeeeeeee . I just flashed on a Beverly Hillbillys episode when Jethro build a smog filter.

I want photos
[/quote]

Thats some funny stuff.

 

[landtoy80]

Sent a email to Tomco Inc. They make EGR filter.
This is his reply

Dear Kurt,

We are developing a line of gaskets and screens for troublesome
applications, the Toyota line of EGR Valves is one of these applications.
This EGR system is like the Ford system where the Exhaust gas enters the EGR
Valve through a tube. In this case, putting a gasket w/ a screen on the EGR
Valve does not protect the EGR Valve. So in the case of Ford, as well as
your Toyota, the screen must go before the valve. You may have noticed the
2-1377 on the web showing the basket we developed for the Ford system. We
are developing the same thing for the Toyota style valves. If you can give
me the inside diameter of your tube, I may have a screen already for your
vehicle. Just let me know.

John
Director of Tech Services

Who is laughing now, Jethro
I knew I was not as krazy as all of you think I am.

 

[Rookie2]

Good job! Reward yourself with a froaty one ,.. out by the cement pond.

Let us know what else comes up.

Thanks,
Rookie2

 

[landtoy80]

I am going to order a EGR filter Tomco has one.
I don't have a $$$ on it yet but does anyone else want one?
If they are cheaper in bulk, it might be a group buy item.

 

[landtoy80]

I sent another email to Tomco with pic's of the EGR port and a dirty modulator.

John,
I will get the size of the tube for you.
Would the filter help the problem with buildup at the port where the
exhaust gas mixes with the air in the intake chamber?
We also have a problem with the EGR modulator. It gets plugged up. I
think its carbon from the motor that gets past the diaphragm in the
modulator.
Or could that carbon looking stuff be coming from the diaphragm as it
gets old and cracked?

kurt

Kurt,
As you are probably well aware carbon is a natural by product of
combustion, so we can never totally get rid of it. The screen will stop the
big pieces from getting into the valve and passages. It also will burn some
of the carbon away before it enters the valve and passages. It should slow
down the process of the build up in the intake chamber, but not eliminate
it. Since the screen is before the tube that leads to the modulator it
should reduce the buildup in there also. I don't think the build up in
there is from the diaphragm, but from the carbon.

The amount of carbon that builds up is dependent on a few
conditions. Naturally the way the engine is made, and cold or hot spots in
the manifold. When the hot exhaust hits a cold spot or a bend the
possibility for carbon to, deposit is greater. Also driving conditions play
a big part in it. If you make short trips where the vehicle never gets to
be good and hot, the possibility for carbon to deposit is greater.

I hope this info helps. As soon as you let me know the inner
diameter of the tube I will see if I have the correct size and you can try
one out.

John

 

[Riley]

Get a price Kurt, this sounds interesting. I'm in.

It would be interesting to track the difference. With all of these 80s between all of us we should be able to track and compare trucks with similar mileage and condition of the systems. Oh and everybody would have to drive the same distance trips and temps.

Riley

 

[RavenTai]

bump

 

[landtoy80]

I still need to pull my EGR tube off the EGR and measure it. I need to get a caliper to measure it with too. I say a nice plastic one with a dial that read in and metric for $19 but didn't have the cash.