[danyrm]

Hi guys i was kickin around fordfuelinjection.com and was looking at this http://fordfuelinjection.com/index.php?p=61 its the egr elimanator kit. Now it seems like all i need is a .5volt resistor. I tried to locate one at radioshack but there all in watts. Can volts b converted to watts?

 

[danyrm]

I found this formula watts= volts x amp http://www.ebtx.com/mech/ampvolt.htm now how do i find the amps?

 

[traviscl]

Uh Oh!

Not a good idea. The resistor is measured in Ohms which they do not provide in the article. The resistor appears to be a 5 watt or 10 watt resistor, but this value is only what power the resistor will handle without burning up. This is not a very wise fix.

 

[Seabronc]

Hi guys i was kickin around fordfuelinjection.com and was looking at this http://fordfuelinjection.com/index.php?p=61 its the egr elimanator kit. Now it seems like all i need is a .5volt resistor. I tried to locate one at radioshack but there all in watts. Can volts b converted to watts?

You misintrepreted what you read. The eliminator develops a .5 volt signal which makes the computer think the EGR is functioning. Why do you want to eliminate the EGR? The only reason I can think of is for a High performance engine that has an exhaust system that doesn't provide enough backpressure to help operate it.

 

[Seabronc]

Maintain your truck. Don't modify until you THOROUGHLY understand what you're doing, and all the OTHER effects your mods will have. For example: the EGR system helps prevent you from burning holes thru your pistons, especially in hi-po engines.

Only if the overall design of the engine was to take advantage of the cooling side effect of an EGR. That can be compensated for. Real Hi PO engines don't use EGRs, like drag racing engines or track engines.

Steve is right about just randomly eliminating stuff. It is there for a reason and you should understand the reason before deciding to remove something. Some stuff is for exhaust emissions, cold start characteristic, evaporative emissions, etc. It may sound Macho to remove the emissions stuff, but it ain't. :smokin: If it is maintained, it will keep your truck running like it was designed and keep you legal.

:thumbup

 

[Seabronc]

Cooling isn't a side-effect; it's the entire purpose of EGR. Drag engines get rebuilt every couple hundred miles - put one in your daily driver with no EGR & see how long it lasts.

I've run with no EGR for 5 years and it was not hooked up for 10 years before that. The EGR was added as a emissions control device in the late 70's. From the Ford Emissions and Diagnosis Service Manual, [OUOTE]"The Exhaust Gas Recirculation System (EGR) is designed to reintreoduce small amounts of exhaust gas into the combustion cycle, reducing the generation of Nitrous Oxide." [/QUOTE] There is no other stated purpose in the manual. There is note to check the EGR function if getting detonation at part throttle.

It does not operate when the engine is below normal operating temperature, when the engine vacuum is low, (like going up a hill or at wide open throttle), or when the engine is at idle or when backpressure is low.

The reintroduction of exhaust gasses reduces the combustion temperature for the main purpose of lowering NOx emissions. Since Ford designs it's engines to run on 87 octane they take advantage of the cooling effect to prevent detonation at part throttle, (it can be compensated for by using a higher octane fuel which has higher resistance to detonation).

 

[SigEpBlue]

I'll chime in by adding that it's the peak combustion temperature which is critical in formation of nitrogen oxides. You get those chemicals when you burn air at a high temperature and/or compression (look up Boyle's Gas Law regarding volume & temperature if you are in doubt). The Federal emissions regulations, enacted to reduce those very pollutants, necessitated the use of EGR to reduce peak combustion temperature, not Ford saying, "omfg we gotta make the engine run cooler!!!11!!1"

 

[Seabronc]

I'm talking about driving a high-compression race engine with no EGR for 5 years. You'd be lucky to get 5 months out of it.

As your last paragraph states: the WAY the EGR system reduces NOx is by lowering combustion temps. The fact that the combustion doesn't burn thru the (now common) aluminum alloy pistons is the side-effect. Older engines with cast iron pistons weren't as susceptible. It was only because of EGR that aluminum pistons became popular with mfrs.

I agree with you Steve, but the fact that some designers are now taking advantge of the reduced temps to allow a more agressive timing program or use softer materials doesn't change the fact that the device was introduced to reduce NOx. Later some smart engineers found out that they could take advantage of the temp reduction of having such a device. For that same reason, as I said several posts back, I agree that one better know what he is doing before randomly yanking stuff of the engine.

Steve is right about just randomly eliminating stuff. It is there for a reason and you should understand the reason before deciding to remove something.

Do the 1990's 302s and 351' use aluminum pistons? I know a lot of smaller engines do and use the cooling effect of a EGR to enable them to use softer materials.

I think we agree but from a different slant on the subject.

Just for the curious, here are a few links that may help in better understanding the EGR;

http://www.autoshop101.com/forms/h61.pdf

http://www.sethirdgen.org/egr.htm

http://www.sethirdgen.org/egrii.htm

http://www.geocities.com/jgkov/EGR.html

http://dsm.aenewton.com/egr_blockoff.htm

 

[FordbyFord]

I was woundering I had just bought a used pair of Long tube headers for my 96 Bronco 351 and the EGR pipe doesnt match up to the EGR bunge on them what would you say todo with the pipe is there something out there that will fit in its place I was looking at the eliminator on FFI.com maybe take that route but I am not about to remove the headers I just installed~Kyle

 

[masterbeavis]

take a piece of tube and make it work. Braze, weld, epoxy, whatever.. (just kidding on the epoxy)