greddy oil catch can question

[D1 guy]

whats up guys...I just recieved my greddy oil catch can and was wondering......do I absolutely have to recirculate it back into the intake? I have searched and cant find an exact answer. Its an s14 motor. What Id like to do is run it from my valve cover to the can then just put a filter on the other side of the can. There isnt any oil comming out of my valve cover at all as of right now. Its good and healthy. Any help or comments would be appreciated. Thanks in advance.

[Colton]

D1, I've had a greddy catch can for over a year and have never vented it back into my intake, in fact I never even pushed oil into the hose until I upgraded everything. Now when I boost (18-20 psi) it will push roughly 2-3 tablespoons of oil into the tube, but it still hasn't even got to the catch can.

To better answer your question just vent a tube down to the ground and be sure to mount it upright, not sideways like i've seen in some peoples pics.

If you are running in a colder climate you can vent the tube back into your intake for a better idle after a cold start up.

-Colton

[Nismo_Freak]

If at all possible route it to the intake, it's designed to operate that way.

If you run it open, run it to the bottom of the car so that the lower pressure region will draw air out of the can.

[xsblacksx]

if faster moving air equals lower pressure and still air equals higher pressure; for example the air above an airplane wing moves faster than the air underneath due to its airfoil shape. the air above the wing is in a region of low pressure; so, could i conclude that the area underneath the car is going to be a region of high pressure, wouldnt that also explain why land speed record chasers (you know them cars that go very very fast) become very unstable at high speeds and ocassionally lift completely off the ground? huh? i have also seen this phenomenon spell disaster for boats, and nascar racers so, in conclusion one can deduce the area underneath a your car is a region of high pressure not low pressure

[Valley]

when air moved over an opening it causes a low pressure area to occur inside that opening. a good bit of air flows under a car or past a radiator, this is what i believe freak was going after.

also, not true, they lift off the ground because of an uncalculated force unbalences them, like a gust of wind at the wrong angle.also, the bottom of race cars (not ****ty *** nascar, sorry if you like it, i don't) are designed to allow as little air as possible under it to create vacuum and what air gets under their to be propelled out at quikely as possible. now if one side has vacuum and another has air pressure not wanting to move and if being forced over it and therfor pushing down, then you would have a lot of downforce wouldn't you? but thats not even in this discussion.

[madtown240]

I would go ahead and keep it in the can, the catch can's, main goal is to keep oil and other blow by gases off the track.The PCV system is an emission system, thats why it is sent through the intake. Before the PCV system they only had down draft pipes that put all that blow-by right to the street. The reason I don't recirculate is there is a possibilty of of detonation on turbo cars. By adding on metered or controlled HC's(oil and blow-by gases) to the engine.

[D1 guy]

Im just running it open right now with out the can. The hose melted shut.....So I unhooked it.