Check this out. I've put a common cheap fuel filter between the PCV valve and the intake manifold. Let's see how much oil it filters. My engine doesn't burn any oil, so I think it won't be much......





Copy/Paste this link for large picture:

http://www.imagestation.com/pi...g.jpg

 

Can you take a more close up, larger picture?

 

Why exactly are you filtering that oil?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by El Pollo Diablo &raquo;</TD></TR><TR><TD CLASS="quote">Why exactly are you filtering that oil?</TD></TR></TABLE>
Because I don't want to let it go into the intake manifold -&gt; like an oil catch can....
Normally it's just air that's passing through the filter.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DutchITR1689 &raquo;</TD></TR><TR><TD CLASS="quote">
Because I don't want to let it go into the intake manifold -&gt; like an oil catch can....
Normally it's just air that's passing through the filter.</TD></TR></TABLE>

It's a filter, not a catch-can.

The PCV valve is a one way valve...you're going to end up with oil sitting in the line and preventing the PCV valve from functioning correctly...from my understanding on how it's supposed to work.

 

not a bad idea... make sure you post the results.

That would probably clog in a week on my car

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Philly_NBP_R &raquo;</TD></TR><TR><TD CLASS="quote">not a bad idea... make sure you post the results.

That would probably clog in a week on my car </TD></TR></TABLE>
Yeah, I want to know how long it takes before it clogs. I only have I/H/E, so we'll see.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by El Pollo Diablo &raquo;</TD></TR><TR><TD CLASS="quote">

It's a filter, not a catch-can.

The PCV valve is a one way valve...you're going to end up with oil sitting in the line and preventing the PCV valve from functioning correctly...from my understanding on how it's supposed to work.</TD></TR></TABLE>
It depends how much oil is coming out of the PCV valve. The oil will stick on the filter paper. I will remove the filter before the oil can drip back into the hose.

 

Once the filter is wet with oil, it will effectively block all normal air flow.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dogginator &raquo;</TD></TR><TR><TD CLASS="quote">Once the filter is wet with oil, it will effectively block all normal air flow.</TD></TR></TABLE>
I don't think it will block air completely -&gt; K&N intake filter is also full with oil. But let's see how long that takes. I'm looking for a larger filter.

 

K&N's oil is very thin compared to motor oil.

I think that once it gets saturated it will block the flow... but only time will tell.

 

It will pool up and prevent airflow.... bad idea. get a catch can, even a plastic coke or oil bottle will work fine.

 

that looks dangerous

 

Correct me if I'm wrong, but isn't that an inline fuel filter? I swear I put the same thing on my Scout last winter.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Splat &raquo;</TD></TR><TR><TD CLASS="quote">Correct me if I'm wrong, but isn't that an inline fuel filter? I swear I put the same thing on my Scout last winter.</TD></TR></TABLE>
It's an aftermarket Renault/Citroen fuel filter. Don't know which car. Many old cars use this filter.

 

Catch can is more better, toss that filter junk in the trashcan.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ &raquo;</TD></TR><TR><TD CLASS="quote">Catch can is more better, toss that filter junk in the trashcan.</TD></TR></TABLE>
LOL. If that filter doesn't get much dirty after a month, then I don't need a catch can....

 

Update: after 4 days of normal driving I can see a few drops of oil on the bottom of the filter. The top of the filter looks clean. So, I think it will take some time before the filter is half full.

I am going to change the setup. I have seen this setup in JDM magazines (HyperRev, VTEC Sports etc.).
They run a hose from PCV valve to catch can and another hose from valve cover to catch can. The catch can has a hole on top, so blowby gasses will escape in the atmosphere and oil will stay in catch can. The hole in the intake manifold and the hole in the intake arm is plugged, so nothing will go into the intake manifold.

 

"They run a hose from PCV valve to catch can and another hose from valve cover to catch can. The catch can has a hole on top, so blowby gasses will escape in the atmosphere and oil will stay in catch can. The hole in the intake manifold and the hole in the intake arm is plugged, so nothing will go into the intake manifold. "

Just run a hose from intake arm to the valve cover. Honda designed the system to have a positive air flow from the arm to the valve cover. A catch can, plugged hose or a poorly designed aftermarket intake arm defeats what the engineers intended. Oil fumes shouldn't be moving from the valve cover to the intake arm unless rings are shot or there are other problems.

Well covered in archives....... somewhere.

John

 

well, you want a vaccuum on the crankcase to make power, so the best thing to do is plug the stem on the valvecover that runs into the air intake, and run a hose from the intake manifold to the pcv location.

also, the thing about k&n filters being oiled, well, that's because they are cotton gauze filters, not paper. oil clogs paper.

cliffnotes:
don't dare disconnect all vaccuum from the crankcase, that's ****** retarded.

k&n's have oil because they're cotton.

don't be stupid and hook the pcv line to the valve cover breather line (connect the crankcase to the crankcase). that'll just hold in crankcase pressure, killing power, and doin nothing else.

it is a good idea to pull a vaccuum on the crankcase, but crankcase fumes also decrease octane level of fuel, so use an LS1 electric smog pump hooked up backwards or use hoses comin from the valvecover hooked up to the exhaust with checkvalves. thats how you make power.

real cliffnotes:
forget the damn fuel filter man. it's a neat idea, but theres other ways to accomplish having a clean intake manifold

-Shawn

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ShadyEH2 &raquo;</TD></TR><TR><TD CLASS="quote"> the best thing to do is plug the stem on the valvecover that runs into the air intake</TD></TR></TABLE>

Do not do this. Take a look at the airflow diagram.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">it is a good idea to pull a vaccuum on the crankcase, but crankcase fumes also decrease octane level of fuel, so use an LS1 electric smog pump hooked up backwards or use hoses comin from the valvecover hooked up to the exhaust with checkvalves. thats how you make power.</TD></TR></TABLE>

Huh?

Just use a damn catch can between the PCV and intake manifold.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ &raquo;</TD></TR><TR><TD CLASS="quote">Catch can is more better, toss that filter junk in the trashcan.</TD></TR></TABLE>

sounds liek the best idea, you'll end up doing more damage with that thing.. run a catch can instead

 

i hope that its a good idea haha

 

if it's a bad idea, then somebody needs to call up SFP and tell them they've got their **** hooked up wrong, along with tons of other race teams, lol...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ShadyEH2 &raquo;</TD></TR><TR><TD CLASS="quote">if it's a bad idea, then somebody needs to call up SFP and tell them they've got their **** hooked up wrong, along with tons of other race teams, lol... </TD></TR></TABLE>

Dumbass... the airflow goes from the intake tube *into* the valve cover. Capping it off is a bad idea.