(Snowball from Clerks voice)
That's beautiful man.
That's beautiful man.
EGR valve
- Thread starter Cobra4pt6
- Start date
the function of the PCV is to vent pressure....so why the hell would you need vacuum to vent pressure??? if there is an open pathway (i.e. breather), pressure will ALWAYS equalize, in this case, to ambient air pressue.
i agree though, deleting/disabling EGR is not really worth the time doing...
cobraracer46
Banned
all the blow by gasses escaping from the piston rings need some type of vacume in order to leave the crank case. On pure race motors, two types of crank case evacuation methothods are used : a vacume pump hooked up to the lubrication system or long hoses going from the valve cover to the exhaust header collector. the passing exhaust gases create a vacume from the veturi effect and pull the blow by out of the crank case.
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not to start a war but look at cobraracer46's post count. Not too high only 34. I think he has a little bit to learn. By the way I totally agree with the deletion of the PCV its like a straw sucking the oil out of the head. My car consumed about a quart every 1500 to 2000 miles before I deleted it.
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cobraracer46
Banned
Just curious, but what exactly are you talking about when you are reffering to my post count?:burnout:
:lol: Thats the worst reason Ive ever heard as to why not to take someones advice seriously. Post count are you kidding??? :??:
I had an open K&N filter on the valve cover but I decided to go back to a press in with the hose running to the air intake tube. #1 reason being is the fact that the hose to the intake helps pull excess pressure out of the block, lessening blow-by on the rings. As the engine runs the piston goes down into the cylinder creating a vacuum, air is drawn in, the piston comes up and the air/fuel mix is ignited. Most people just think about what is going on above the pistons, few think about what is going on beneath them inside the block and cylinder bores. After ingition the pistons are pushed back down into the bores by the expansion of the burnt fuel as they do this the pistons also have to push the air back out from the underside of the piston. If the block is not vented moving that air would be much harder than if there was a vacuum inside the block with little or no air to move. If you just had the block vented to the outside, this means there will be no built up pressure inside which is ok, but having a vacuum inside the block is most desireable. Id say go back to a breather w/ a vacuum hose.
My post count is alittle higher does than mean my knowledge is more valid? :loser:
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I was just kidding but my car really drank a quart of oil every 1500 to 2000 miles and after the delete I didnt have to add oil at all. Ive seen some guys add filters in the line but it still sucks oil out of the head cover. It really annoys me. Ford should have designed the covers better.
ok I was hoping so :rockon:
Ive never had a valve cover off yet but maybe they could have designed in a baffle below the pcv fitting in the valve cover. I've also heard that there's alot of oil mist with these dohc engines, if thats true then a baffle wouldnt do much.
I think an open filter would be fine but a vacuum beneath the pistons in the crankcase is most desirable and nets the biggest HP gains. JMHO
Ive never had a valve cover off yet but maybe they could have designed in a baffle below the pcv fitting in the valve cover. I've also heard that there's alot of oil mist with these dohc engines, if thats true then a baffle wouldnt do much.
I think an open filter would be fine but a vacuum beneath the pistons in the crankcase is most desirable and nets the biggest HP gains. JMHO
Mine vents very well with breathers. I tried to take a pic of me giving it throttle and gasses escaping from the breather, but the gases and oil mist are not showing up in the pic. It is actually blowing out of the breather about 9 inches in all directions, and probably 90% steam/gases, and 10% oil mist. Like I said before, I have been running this setup for over a year, and I have never had to add any oil. Maybe this is why one guy I knows 65 mustang 289 engine failed. He ran breathers on it for 10+ years that he had it. Oh no wait it is because it had over 350,000 miles on it.
Read Sean Hylands book. A baffle would do very little to stop the oil problems. He made a clear plexiglass cutaway on a valvecover to watch the oiling action of a DOHC cobra motor, and he stated that to his suprise the oil was actually turning into a small lake in the valve covers and completely submersing the cams and cam girdles. Talk about one hell of a oil job.
to any of you who have done the breathers, do you know a part number for that air filter?also, how is the filter attached? have pics?
As for the drivers side I just stuck a new breather in the hole. The passenger side was a little more difficult. I had to buy a dual male vacume fitting that goes inside of the breather and the stock tube that ran into the upper inlet pipe that feeds into the TB. I then used some vacume caps to plug the upper inlet pipe and the intake where the PCV tube went. I hope this makes since.
when u mean u stuck the breather in the whole, does that mean that it already fits inside or did u have to make a conector. How is it staying in place. as far as the passenger side, i have been lost
:bash:
Just do the oil compressor oil catcher method, you cant go wrong. You keep your valve, and you dont get oil in your intake.
Just when you thought...
To delete or not to delete. Everytime I think I'm decided, someone breaks it up.
I think the oil catch can would be safest - you keep the PCV system, and eliminate the oil.
With breathers, don't you end up with oil coating your engine?
To delete or not to delete. Everytime I think I'm decided, someone breaks it up.
I think the oil catch can would be safest - you keep the PCV system, and eliminate the oil.
With breathers, don't you end up with oil coating your engine?
Back to the topic of EGRs. Anyone have theirs turned off with a tune and left it on the car?
Remember that there is a pressure drop through an oil catch can. I dont know what this effects exactly but i would assume that you woudlnt want a little baby one. That would be too restrictive...
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