IS IT OK TO SHUT OFF PCV/EGR ????

[pajerokid]

Hello peeps!

Is it alright to kill the Positive Crankshaft Ventilation / Exhaust Gas Recirculation in a 4D56TdIc? My reason for this is that i dont want oil to accumulate in the intercooler (please look for "Oil in intercooler" thread for some background info)

Im planning to remove the hose from the cylinder head cover to the turbo intake hose, and plugging the nipples.

What will be the effects? positive or negative. As always, comments appreciated :wink:

[Yellow]

It's not good to close up the hole, the pressure in the cylinder head cover will have no where to go, I suggest you install a filter on the hole of the PCV. its like a small air filter.

[pajerokid]

yellow:: Like the K&N breather sir? ok But how will doing that affect performance kaya? Is it bad for diesels? Ty

[Yellow]

di naman siguro what the PCV does is it helps the engine warm up faster, so i guess it just wont warm up that fast in the morning, it would probably help when the engine is on load that it wont add heat to the air coming in the engine. By the way my boost is up to 13 psi now, it kicks really hard now, and i can hear the turbo spin, turbo lag has been lessen considerably the turbo probably kicks in at around 2000 rpm, just a guess though dont have a tachometer hehehe :D

[pajerokid]

yellow:: sir kamusta naman ang konsumo ng L200 nyo?

-On PCV, ive read that this is to reduce deadly emissions, so its probably not a great idea if youre going to have your vehicle tested :mrgreen:

[Yellow]

consumption is around 9-10 km/L pag di mabigat paa ko, mga 8 km/L kung mabigat. i really felt the difference from the +3 psi, mas mabilis mag spool ang turbo, i even set it back to 10 psi just to test kung may difference, medyo nakakapanibago lang kasi pag around 5 psi up talagang sumisipa na, maybe thats around 2500 rpm.

[pajerokid]

ok :D ty sir Yellow

[pajerokid]

update::: i killed my car's pcv/egr by putting in a cheap simota whatchamacallit exhaust thingie. Yung parang air filter na mini. i'll report what'll happen to fuel consumption and performance in two weeks time.

yun lang. peace.

[Yellow]

pajerokid,

pakita naman ng pics of the breather filter. I'll be taking pics of the mod i did on the wastegate actuator this weekend ill send them to you soon.

Yellow

[pajerokid]

Sir Yellow,

pics can be found on http://www.pbase.com/mann2/egr


i used the rubber egr hose which came with my simota filter. i bought a simota breather P250. I was initially impressed coz merong kaunting power increase (no kidding). And less visible black smoke. DI po joke ito, i know its sounds too good t be true but it is :D

Plus, di na mag-aaccumulate yung oil sa turbo at sa intercooler.

[Yellow]

Where did you buy the rubber hose cap? I'm planning to that also on my 4D56.

[pajerokid]

sa aking suking auto supply. :D ten bucks. its for h20 pipes.

[Yellow]

Pajerokid,

Ahhh I just finished installing the breather also, I bought it for 200 pesos, I cut a rubber hose and stuck a bolt into it and used it to shut the hole coming from the intake hose. what kind of effect did it had on your engine?

[pajerokid]

yellow,

mas malakas ng kaunti yung power, but there is a slight increase in vibration in the morning. Yung sa akin, oil mismo ang bumubulwak e medyo nag dri-drip sa breather. Is yours the same? :?:

[Yellow]

I had the breather for 2 days pa lang di naman nag dridrip so far, malamang may mag dridrip din yan sooner or later so linis linis lang ang katapat, sa vibration i havent noticed a difference sa power naman no difference din, sa usok lang nabawasan ang usok.

[pajerokid]

i think blowby uli yung engine ko. No smoke sa tambucho pero ang lakas ng Exhaust gas na lumalabas sa head. Baka makuha sa adjust ng tappets. i read this somewhere.

[Yellow]

Di ba kaka overhaul lang ng engine mo? sobra naman yan kung blow by na, I'll post my observations with in the week, 2 days palang nakakabit ang breather, and usual travell ko in a day is 14 kms back and forth na yon.

[pajerokid]

Oo nga e. I think there's a problem with the valve guides. Sayang overhaul

[RS Sprint]

I installed an oil catch can with a return line to the intake tubing to eliminate oil blowby.

The EGR is there to recirculate oil blowby back to the engine for reduced emmisions BUT if you did disconnect the EGR completely (what is done on race cars) it will have no effect on your emmisions as tested from the exhaust tailpipe. This is because the oil blowby is vented directly to the atmosphere and hence is not measured. It reduces overall emmissions in a vehicle because the oil blowby is harmful to the environment.

Oil blowby going back to the combustion chamber increases the chances of detonation (in gas powered vehicles, not sure about diesels) because it affects the gas' octane content.