EGR modifications

**URRABI** · December 11th, 2003 05:07 PM

Has any of you done any EGR modification? Ano ginawa niyo? Ano effect? Saan niyo pinagawa at magkano?

Salamat at pasensya na sa maraming tanong.
URRABI

**tebs** · December 11th, 2003 07:46 PM

what kind of modification are you pertaining to? medyo vague kasi yung tanong. para may makuha kang sagot sa mga tao dito

**OTEP** · December 11th, 2003 09:44 PM

And what vehicle are you planning to modify? What are the objectives of your intended mods?

**URRABI** · December 12th, 2003 08:19 AM

I just read somewhere that some people have blocked/disabled EGR and this led to less smoke and more power. I am just wondering if anyone here has done that or, for those who did not do any modifications, do they experience problems with smoke and power.

**OTEP** · December 12th, 2003 05:04 PM

The purpose of EGR is to clean the exhaust by recirculating exhaust gases (thus they will be burned more). It is an emissions control device and thus should be not tampered with unless you are really sure of what you are getting into.

If you let the EGR freely breathe into the atmosphere, you will in theory get cleaner exhaust at the tailpipe because you are spilling some of the pollutants into the engine bay.

**URRABI** · December 15th, 2003 11:21 AM

I assume that nobody has done any EGR modifications here....so, has anybody ever experienced problems with EGR in 4D56 engines?

**ClemO** · December 15th, 2003 05:10 PM

Urrabi,

On the stock 4d56 seen in vehicles like the Adventure, etc, I don't seem to recall (but I can have a look again) seeing any EGR system. On the other hand the imported vehicles DO have these systems. The mod basically consists of blocking off the exhaust gas from reaching the intake manifold. The recommended way is to put a blocking plate, rather than to just disable the EGR valves. Normally, under light to medium high-speed driving the valves open, but when idling or full(?) acceleration they are supposed to remain shut. Philippines (and apparently NZ / Aus) do not require EGR. I have tried disabling the EGR on my Bighorn, but didn't really notice much of a difference, either in power or in smoke reduction (uh, because it doesn't really smoke in the first place). did this by disabling the vaccuum lines to the EGR control valves. When I have the time am planning to truly block off the exhaust manifold tap-off and remove the crossover pipe to the intake. The whole thing will probably be worth a few pounds of weight... :-)

**URRABI** · December 15th, 2003 07:13 PM

Hi ClemO,

Why did you do the EGR mods if you don't have problems with smoke and/or power, in the first place?

**ClemO** · December 19th, 2003 02:10 PM

Urrabi,

You can supposedly get a bit of better mileage and power if you disable the EGR, even if your engine is 'perfect'. The EGR basically sacrifices a bit of performance for environmental considerations..

And, its one thing less that can go wrong.. :-)

**pajerokid** · December 19th, 2003 03:15 PM

URRABI, yellow (ano na ba nagnyari sa kanya?) and i experimented on this dati. What i did was diconnect the EGR hose from the intake tube (before the turbo) and place a simota breather instead.

The reason i did this was because some oil was getting to my turbo's impeller. so far so good, my turbo is as clean as ever. The good thing is, in theory, you have less non-combustible gas recirculating back into the chamber. therefore you get more oxygen and again theoretically, more power.

i think i still have some pics...

www.pbase.com/mann2

**pajerokid** · December 19th, 2003 03:19 PM

ay sorry nadelete ko na pala yung egr pics.

**URRABI** · December 23rd, 2003 04:14 PM

don't they check NOx emission during emission testing?

**pajerokid** · December 23rd, 2003 04:23 PM

Im happy to inform you that my antiquated 4D56TDiC's emissions would even pass the emission standards set for NA diesels. And then some! I posted the results somewhere.. teka.....

**pajerokid** · December 23rd, 2003 04:28 PM

Originally posted by pajerokid
1.24 average score in my pajero.

the highest i got was 1.0.

the lowest was 1.54 eto yung unang buga.

Nakakatawa nga yung tester eh, gusto atang pasabugin yung makina ko, eh wala talagang usok! :D

Oh, no special treatment whatsoever.

**URRABI** · December 23rd, 2003 04:45 PM

that's good....'cause I'm thinking of disabling EGR sa sasakyan ko....can anyone recommend a place where I can have this done?

**pajerokid** · December 23rd, 2003 05:04 PM

URRABI, DIY dude

**URRABI** · December 23rd, 2003 05:17 PM

'yung kinabit ko dating window washer na may LED, nakita ng mekaniko, sabi...."sino gumawa nito? ang pangit!". sabi ko, "ako". wala na siyang nasabi. hehehe...

i think, i'll just leave it to the professionals.

**pajerokid** · December 23rd, 2003 05:38 PM

hehe ;)

Here's what i did....

Get the hose from the cylinder head cover, replace it with a simota hose and buy a simota breather (if you have the cash, go K&N), cut the hose to the desired length and install the breather on one end and put the opposite end of the hose on the egr nipple of the said cover.

Plug the intake tube with a rubber cap, sorry but i dont know what this is called. Its used to terminate water connections, available through most auto supply stores. I used bando rubber tape to make it fit nicely. thats it

Good luck! ;)

**URRABI** · December 23rd, 2003 06:17 PM

hmmm....sounds simple enough....thanks for the detailed instructions!

i'll try it once of these days.....'pag sinipag ako.....

merry christmas and a happy new year!

**pajerokid** · December 23rd, 2003 06:59 PM

Happy Holidays to you too!

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EGR modifications

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