$2.99 Oil Catch Can

[eTiMaGo]

Originally Posted by yaris-me

I'm confused. The hose from the PCV goes to the intake manifold after the throttle body and there is another hose that goes after the MAF. What is the point in having two? After throttle shut down wouldn't it just circulate air through the hose to the manifold?

vacuum sucks, simple as that. There is a difference in pressure on the ends of each hose, so the PCV system works as a kind of restricted bypass

[firebob]

There are 2 hoses.

#1 goes form the PCV valve that is screwed into the crank case to the intake.
#2 goes form the air intake to the crank case.

In the red box is #1. The black fitting is the PCV valve.
In the green box is where #2 should be. With a stock car this would only see clean air.

[Tamago]

Originally Posted by firebob

There are 2 hoses.

#1 goes form the PCV valve that is screwed into the crank case to the intake.
#2 goes form the air intake to the crank case.

In the red box is #1. The black fitting is the PCV valve.
In the green box is where #2 should be. With a stock car this would only see clean air.

where did you get this information FORM?

[marcus]

Originally Posted by firebob

There are 2 hoses.

#1 goes form the PCV valve that is screwed into the crank case to the intake.
#2 goes form the air intake to the crank case.

In the red box is #1. The black fitting is the PCV valve.
In the green box is where #2 should be. With a stock car this would only see clean air.

so does this mean we only need one filter which is on the red box.

[eTiMaGo]

Originally Posted by firebob

Ok sure.

But both hoses do not do the same thing.

The set up is to pull in air form before the throttle body through the crankcase and dump it back into the intake. The hose that dumps back into the intake has the check valve. When you let off the gas the throttle body closes down most of the way and the motor would suck air though the crank case and burn off the fumes in the crank case.

But with only one you will only get blow by and a bit of air from the change in the temp as the car heats up and cools down out of that hose. I didn’t see that you had removed the other hose.

+1, mine was originally set up like this too, on the atmospheric pressure hose, and never caught a drop of oil. It's gotta be on the vacuum hose connected to where your stock manifold used to be, as the vacuum in there (off-boost now, obviously) is what will suck the fumes through the system. Otherwise you're just filtering clean air.

[yarisugi]

What is the inside diameter of the hose that you're connecting it to?
I might do the same, but need to know the inside diameter

[Morgan]

Originally Posted by yarisugi

What is the inside diameter of the hose that you're connecting it to?
I might do the same, but need to know the inside diameter

I had a small length of 3/8" [I think that's the size it was] tubing I put on the filter then put the ventilation hose around that with a zip tie, there's a lot of stretch in that hose once you cut away the protective wrap. But the filter does have a very small inlet and outlet so instead of zip ties a screw clap might be an easier solution.

[marcus]

anyone confirmed the 5psi drop for using the filter is that affecting any hp at all..

[eTiMaGo]

Originally Posted by marcus

anyone confirmed the 5psi drop for using the filter is that affecting any hp at all..

It should not, that PCV section is basically just a bypass, any air that is slowed down there will just go through the main intake tubing...

[Tamago]

Originally Posted by marcus

anyone confirmed the 5psi drop for using the filter is that affecting any hp at all..

vacuum is not measured in PSI

what psi drop are we talking about? i guess i should have read the rest of the thread.

[marcus]

ok thanks etimago..im on this.


psi drop due to oil filters.. which mean itll slow down the air going in the intake but as etimago said wont make a difference.

[Tamago]

Originally Posted by marcus

ok thanks etimago..im on this.


psi drop due to oil filters.. which mean itll slow down the air going in the intake but as etimago said wont make a difference.

psi drop where? where is the psi drop?

[marcus]

Originally Posted by Tamago

psi drop where? where is the psi drop?

its says so on that specific filter when i went to homedepot/canadiantire to check it out right on the filter itself says it will have " 5 PSI " drop by using it.

[Tamago]

Originally Posted by marcus

its says so on that specific filter when i went to homedepot/canadiantire to check it out right on the filter itself says it will have " 5 PSI " drop by using it.

5psi drop at what air flow?

[marcus]

Originally Posted by Tamago

5psi drop at what air flow?

the excess air coming from the engine thats being recycled back to the intake. that air is whats being filtered due to oil that goes along with it.
i could be wrong though so check with the person that did this already im still in the process..

[marcus]

i guess that only apply for air compressors...so i guess it has no effect then..

[Tamago]

yup, you're in the clear! :)

[marcus]

ill pick it up this weekend..