my FI PCV/Crank VAC system.
I vent each valve cover to the Vented breather can with a 3/8's hose/fuel line.
And the (none vented closed loop) PCV can goes inline between the valley cover and the intake , or the valve cover pcv line and the intake , with the GN anit crankcase boost check valve in between the out on the catch can and the intake , so under boost the check valve will close and prevent boost from presurizing the crank case, system fixed all my PCV issues in both my LS cars
And the (none vented closed loop) PCV can goes inline between the valley cover and the intake , or the valve cover pcv line and the intake , with the GN anit crankcase boost check valve in between the out on the catch can and the intake , so under boost the check valve will close and prevent boost from presurizing the crank case, system fixed all my PCV issues in both my LS cars
Where do you get one of those systems at? Do you have any pics of the setup on the car? You can email me if it's better for you chaynes@excoresources.com Thanks!
-Coleman
-Coleman
ok so im lost. this is what i have so far. i have an ls6 vally cover.
each valve cover has a -10 to a vented breather tank.
but when not in boost i want to pull vacume. so hook the ls6 valley cover to a check valve and from that to the throttle body or manifold. right?
each valve cover has a -10 to a vented breather tank.
but when not in boost i want to pull vacume. so hook the ls6 valley cover to a check valve and from that to the throttle body or manifold. right?
Thread Starter
Joined: Nov 2001
Posts: 10,018
Likes: 51
From: Virginia
thats exactly right
just visualize the path that air travels
when normal driving
air into breather vent, into engine at valvecovers, out of engine at ls6 cover, through checkvalve into intake
in boost
nothing goes from intake into engine because of check valve
engine can breath out of vented catch can if necessary
mine just also has a line to the inlet of the turbo so that during hair airflow (such as boost) that line will have a slight vacuum draw on it as well. this needs to go direct to the crankcase or it will just 'leak' at the vent
just visualize the path that air travels
when normal driving
air into breather vent, into engine at valvecovers, out of engine at ls6 cover, through checkvalve into intake
in boost
nothing goes from intake into engine because of check valve
engine can breath out of vented catch can if necessary
mine just also has a line to the inlet of the turbo so that during hair airflow (such as boost) that line will have a slight vacuum draw on it as well. this needs to go direct to the crankcase or it will just 'leak' at the vent
so basically, hook a catch can with breather to both valve covers.
and
take a line out of the valley cover, through a check valve and into the intake behind the turbo
this line that runs to the vaccum side of the turbo, where is its other end?
and
take a line out of the valley cover, through a check valve and into the intake behind the turbo
this line that runs to the vaccum side of the turbo, where is its other end?
Thread Starter
Joined: Nov 2001
Posts: 10,018
Likes: 51
From: Virginia
yes, exept i dont have a catch can, i have a coalescing filter betwen the engine and intake that catches anything from getting sucked through the engine into the intake/
the hose on the vacuum side of the turbo runs to the crankcase... filtered by the main air filter.
the hose on the vacuum side of the turbo runs to the crankcase... filtered by the main air filter.
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Verdad Gallardo Thread Starter
Joined: Nov 2001
Posts: 10,018
Likes: 51
From: Virginia
there is a vacuum created between the air filter and turbo (or s/c) when they are 'sucking' making power
i tap this into the crankcase
ill try to type my stuff as simple as i can
i have (currently)
line1 from crankcase to air filter (happends to be ls6 valley cover).
line2 from crankcase to coalescing filter to 1 way check valve to intake.
large DIY breather valve mounted at oil fill cap.
line 1 draws on crankcase under boost (check valve on line 2 shuts)
line 2 draws on crankcase under vacuum (while line1 acts as the fresh air source)
breather valve sucks shut under vacuum and blows open if there is ever any positive crankcase pressure
i tap this into the crankcase
ill try to type my stuff as simple as i can
i have (currently)
line1 from crankcase to air filter (happends to be ls6 valley cover).
line2 from crankcase to coalescing filter to 1 way check valve to intake.
large DIY breather valve mounted at oil fill cap.
line 1 draws on crankcase under boost (check valve on line 2 shuts)
line 2 draws on crankcase under vacuum (while line1 acts as the fresh air source)
breather valve sucks shut under vacuum and blows open if there is ever any positive crankcase pressure
MM I've used the system in the pic for 2 years. It's worked well. Looks like yours is similar, except you keep the valve cover filter normally closed unless excess crankcase pressure opens it up.
Do you need it normally closed for extra crankcase vac to help scavenge return oil?
Do you need it normally closed for extra crankcase vac to help scavenge return oil?
Banned
Joined: Mar 2010
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I have done alot of research on this sytem due to FI and pressurized crankcases I had a vehicle that I turbocharged and this is what I came up with this is a pic out of APS turbo instructions so they have this valve on the valley cover to intake and the valve covers going to turbo inlet I am pretty sure you can get this at any APS dealer!
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[/IMG] Thread Starter
Joined: Nov 2001
Posts: 10,018
Likes: 51
From: Virginia
MM I've used the system in the pic for 2 years. It's worked well. Looks like yours is similar, except you keep the valve cover filter normally closed unless excess crankcase pressure opens it up.
Do you need it normally closed for extra crankcase vac to help scavenge return oil?
Do you need it normally closed for extra crankcase vac to help scavenge return oil?
Thread Starter
Joined: Nov 2001
Posts: 10,018
Likes: 51
From: Virginia
i am talking about my own system in my own thread here bro.
i had the valve you are showing off about 9 years ago, its in the 5th picture in my first post in this thread.
i had the valve you are showing off about 9 years ago, its in the 5th picture in my first post in this thread.