Oil in upper intake

[2MUCHBOOST]

Now I have been chasing this problem on this motor and my old motor.
I have a an air to oil seperator in the pcv line and moved the pcv to the valve cover and it seemed to fix the problem, untill I went to change my plugs and there oiled soaked. I remove the inlet pipe from the upper intake and oil . Its not coming threw the pcv WTF is is coming in at??? I pulled the "S" vac line off the and the inside of the hose is damp.
WTF is going on here???

[Gator]

Is it possible your blower/turbo unit is pukeing oil into the intake charge somehow? (is it self contained like a procharger) or did you have to tap the pan to lube the unit.? I was thinking ring blowby when you said your plugs were wet, but it deffinatly sounds like its coming from "upstream" somewhere...

[2MUCHBOOST]

150% sure its not coming from the blower since the car is N/A....lol
For some reason this motor is building MAD crank case pressure. Something is sucking the oil up the intake just cant figure out what or why.

[rel3rd]

I pulled the "S" vac line off the and the inside of the hose is damp.
WTF is going on here???
S line off the WHAT? The intake? If the inside of whatever you're talking about is wet with oil, there's your culprit...

I didn't have a oil sucking problem until I swapped to a Systemax intake. I had to run PCV lines over towards the strut tower and used an inline filter. It cured it. Lines were roughly 2 feet long each....Some people say screw the PCV and just put a breather in each valve cover...I've had a few Cobra intakes do the same thing, but never nearly as bad as the Systemax did...

If it isn't sucking oil through a hose, I'd suspect a bad intake gasket...whether it be a simple misalignment, or improperly "cut" surface on the intake to head surface...

Pull the upper intake off and see where the inside of the upper or lower intake is wet, and you'll find the problem.

[2MUCHBOOST]

Well Ive moved my pcv to the valve cover and still ran the Lowes air to oil separotor (spelling). Got better. Now it looks like its pulling the oil from the line off the vac tree (s) the vac sorce. the lower gaskets gets damp, but why is it pulling it up there.

[2MUCHBOOST]

Found this on hardcore 50
Thread: oil coming form PCV holley intake help (http://bbs.hardcore50.com/vbulletin/showthread.php?p=284719#post284719)
View Single Post http://bbs.hardcore50.com/vbulletin/images/statusicon/post_old.gif June 6th, 2006, 09:32 AM #39 (http://bbs.hardcore50.com/vbulletin/showpost.php?p=284719&postcount=39) $uperstang (http://bbs.hardcore50.com/vbulletin/member.php?u=12297) vbmenu_register("postmenu_284719", true);
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Join Date: Apr 2006
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http://bbs.hardcore50.com/vbulletin/images/icons/icon1.gif Re: oil coming form PCV holley intake help
Just to let everyone know I have been dealing with this problem for quite some time now and have experiemtned with several different set ups and have seen it happen on several different intakes! Don't, by any means, get rid of the Holly intake, they are GREAT intakes! I have seen this more on these FRPP Cobra intakes! Seen it on TFS Track heat, TFS Street Heat, Edelbrock Performers, Holly. So by no means is it one specific intake. However IT IS the baffle design. I have the tall polished ford racing valve covers with one hole on the passenger side rear and one hole on the driver side front. I first attempted to use the PCV in the stock location lower intake and hook up everything like stock. Capped the driver side cover with a standard chrome cap and used that as my oil fill location. Placed a tube from the TB to the passenger valve cover to pull in fresh metered air (CLOSED CRANK CASE) Well I was burning a huge amount of oil you could see it and smell it. Like the post above after a few dyno pulls to 6500 rpms I burned 1qt of oil! Then drivintg it around like that I burned 1qt of oil every 75 miles. It was time to find out what was going on. I, like every one else, placed an oil seperator in-line and was amazed at what I found. After 10 miles of normal driving the sucker filled up to the top! Well now I found out where my oil was going! The oil would pool up in the intake and when I would first start it, it would puff a huge cloud of white smoke and smell like burnt oil!!! Everyone and their mother said "wow man you have a valve seal problem" I said "no I sure hope not because these are brand new heads right out of the box from AFR." Not to say that has never happened before but I already knew where the problem was coming from. So thank God I had the tall valve covers and had installed the baffles! Then a thought from God crossed my mind. Cap the PCV in the lower rear intake. Put a stock PCV in the driver side valve cover and still keep the in-line oil seperator to see what happens and how much oil I catch if any? Also keep the passenger side TB tube hooked up to that valve cover to pull in the fresh metered air. Guess what, like I said above, problem solved!!! No more oil, well, maybe just a small drop or two in the seperator after 75-100 miles of driving! At this rate it would take 3,000 miles to fill it up if it ever fills up? We shall see, more miles will tell. ALSO the annoying problem of that HUGE puff of white smoke and burning oil smell is GONE COMPLTELY!! So it was NOT a bad valve seal in the NEW AFR heads like everone thought! CONCLUSION find a solution for your set-up! This is the best one yet! It is not simply putting breathers on which would work too if you capped off your PCV valve but would not be as effeicient because my set-up pulls the gasses out with the help of the intake vacuume that is created!

Here are the options:

#1 Stock set-up like mine (CLOSED CRANKCASE DESIGN) = pulling in fresh METERED air through the TB pass side and venting out the stock PCV on the driver side cover (YOU NEED valve cover BAFFLES)

#2 Cap the stock PCV run breathers on both valve covers and cap the TB tube on the TB = Still pulling in fresh air, but it is air that is not metered by the MAFS now but it still vents through the breathers. This is OK and the nest best alternative. (OPEN CRANKCASE , not how it was designed to work)

#3 put one breather in and cap the TB tube and still have your PCV system installed = Vacuum leak. Will it work? Yes but it is a huge vacuum leak. NOT good.

#4 some people will cap the TB tube and cap the PCV and only use one breather, Not good either because now you are pulling in air from one side of the crank case ane trying to vent air on the same side, IN, out, IN out, IN Out on the same side, NOT good!

Sorry for the long post but I have been researching this like crazy and just wanted to let everyone know the REAL DEAL, I have looked on every stang site and researched every post and tried all kinds of crap and finally have reached and found the best possible solution and just trying to help!!! TRY THE BEST TO KEEP THE CLOSED CRANKCASE DESIGN!
__________________
1990GT - 325 Eagle Stroker

[Trojan Horse]

Thanks for the info and glad you found a solution. http://www.clickclickracing.com/forums/images/icons/icon14.gif
Sounds like you have a lot of CC vacuum. Another cure that might work is to use an adjustable metering valve on the valve cover opposite the one your PCV is in or hooked to. They are used in high performance engines that use a vacuum pump to control the amount of CC vacuum and prevent pulling excess oil into the separator tank and off of your bearings. I believe Moroso makes them, but I can find out for sure if anyone needs one.

[Mill Creek Mafia]

wow, that's pretty interesting stuff. I understand, yet still am slightly confused about how the venting process differentiates for different intake applications... I wonder if my car will end up being that way when i get back home and finally get the last week of finishing touches on it accomplished?