Ok, i have a 98 civic with a jackson racing supercharger. It was put on the car before I got it. The problem i'm having is that on my valve cover where the pvc connection should go I have this:
http://jrow.thelanhouse.net/pvc.jpg

and oil leaks out of it. I was thinking an oil catch can might be my solution but i'm not sure where to run the hoses. I was thinking maybe have the can replace that filter then run back down to my oil pan? Not really sure where to go with this, need some help.

Did you put too much oil in when you filled it? That is located at the top of the head and the oil shouldn't be able to reach that high. IDK

run a line from the pcv valve to a catchcan and a new line from the catchcan to the mani.

heres instructions with pix.

http://www.c-speedracing.com/howto/catchcan/catchcan.php

run a line from the pcv valve to a catchcan and a new line from the catchcan to the mani.

the supercharger replaces the intake manifold so i'm not sure where to run the return line to.

the supercharger replaces the intake manifold so i'm not sure where to run the return line to.

run it to the JRSC mani.

run it to the JRSC mani.


its got a crap load of ports on it, any idea of the general location of the port to run the hose to?

T it to one of the vacuum.

If oil leaks out of your PCV valve, you should replace it because it is stuck in the open position. It also needs to be connected to a vacuum hose rather than that filter.

If oil leaks out of your PCV valve, you should replace it because it is stuck in the open position. It also needs to be connected to a vacuum hose rather than that filter.

there's not actually a PCV valve there, its just a rubber hose with that filter on it. i'll take some pics and post em later

If oil leaks out of your PCV valve, you should replace it because it is stuck in the open position. It also needs to be connected to a vacuum hose rather than that filter.

he's talking about oil vapors coming out of the valve cover breather valve. its the line that originally is supposed to connect to the intake piping.

just get an oil catch can system as mentioned above. it'll solve your problems.

Ok so i'm confused as to where this oil is coming from. It isn't coming from the PCV valve or is it?

The PCV valve for those who don't know means Positive Crankcase Ventilation which captures blow-by gases and reburns them in order to reduce emissions. If it is stuck open, it will suck oil into the intake and burn it. That doesn't sound like the problem you're having so i want to know...what the hell is going on? Where is the oil coming from? Is it a different hole or is it the PCV valve? Superbluecivicsi, i'm looking at you for an answer here.

pressure in the crankcase is caused by the movement of the pistons and piston blow by. basically, there is positive air pressure thrown into the crankcase. the pcv system relieves this positive air pressure.

the PCV system starts in the intake. the barb fitting on the valve cover is connected to the intake barb by a hose (the fitting where the hose from the intake, or in robodeath's situation, he replaced it with a breather filter) is the PCV system's inlet. air will goes down the valve cover here. air will flows through the head and into the crankcase. when air is in the crankcase, it picks up oil vapors because here is where oil is being thrown around at hi temps and velocity. the air then travels into the breather chamber where some of the oil vapors are separated and drained back into the crankcase. the air travels from the breather chamber through a hose and to the PCV valve. the PCV valve is a one way valve. it opens when vacuum pressure is applied to the top of the valve. the pcv valve is connected to the intake mani by a hose so vacuum from the intake mani can put pressure on the entire system. keeping that in mnd, the PCV system is a closed vacuum system. vacuum is exerted on one end and pressure on the other. this will allow any pressure in the crankcase to be easily vented.

the problem is, when you have boost, the intake manifold and intake are pressurized. by having the hose still connected from the intake to valve cover inlet, it will cause the crankcase to pressurized too. remember, the intake mani is also pressurized at this same moment (no vacuum) so causing the top part of the PCV valve to not open. at this moment you have a sealed and pressurized crankcase.

what robodeath did was, instead of connecting the hose from the valve cover inlet to the intake barb, he closed the intake barb and replaced the valve cover inlet with a filter. when he goes into boost, the intake manifold is pressurized (so the top of the PCV valve is also pressurized).

The million dollar question here in robodeath's situation is.......................where does this positive air pressure go that has collected oil vapors from the crankcase when the rest of the pcv system is sealed under boost and he has a breather filter opened to the atmosphere?

answer------------> it goes out the breather filter, because thats the only place it can go under boost.

if you still have the hose attached between the valve cover inlet and intake barb instead of having just the breather filter, it will travel from the intake into the mani and into the combustion chamber where it will be burnt in the combustion chamber, lowering your octane rating of your fuel.

an answer to the two problems above----------------> connect a oil catchcan to the PCV system. I hope this helps, my fingers are sore ;)

Could you attach the breather hose that runs from the PCV to the intake before it enters the supercharger? It would have vaccuum before the supercharger. Would that work? I know that isn't what you told him to do, but would that work?

Could you attach the breather hose that runs from the PCV to the intake before it enters the supercharger? It would have vaccuum before the supercharger. Would that work? I know that isn't what you told him to do, but would that work?

what you mean is from the pcv valve to the catch can then back to the intake. there will be a breather filter on the valve cover barb..................yes, you can do this simple method. it will work, but, you will not pass the visual smog inspection. an answer to that is, to simply just replug the hose from the valve cover barb to the intake barb. plug the pcv valve hose back into the intake mani and smog.

http://www.beesandgoats.com/boostfaq/PCV_turbo_1fit.jpg

another way of doing it which exactly mimics the pcv system and does not require undoing things during smog is to get three 90 degree fittings. place two of the fittings in the intake (the first one facing the direction of the incoming air and the second facing opposite of the incoming air). connect a hose from the 90 degree fitting facing the incoming air to the valve cover barb. the second 90 degree fitting facing the opposite of the incoming intake air connects to the catch can. next, you remove the pcv valve and replace it with the third 90 degree fitting. connect this 90 degree fitting to the oil catch can and then plug up the original vacuum source for the pcv valve that was removed.

http://www.beesandgoats.com/boostfaq/PCV_turbo_2fit.jpg

there are many ways to route the catch can. these two are proven methods.

ive added some pix for a visual.

Based on the illustrations, If you were to allow the catchcan to over fill and oil got back into your incoming air for the turbo, this would be bad news bears correct? Even witha filter element in the catchcan, wouldn't there still be a slight amount of oil in the air that could hurt the compressor side of the turbo?

if you had that much oil bypassing the catchcan and filter element or large amounts in collecting in the catchcan in minimal time................you should go get a leak down and compression instead of worrying about oil.

pressure in the crankcase is caused by the movement of the pistons and piston blow by. basically, there is positive air pressure thrown into the crankcase. the pcv system relieves this positive air pressure.

the PCV system starts in the intake. the barb fitting on the valve cover is connected to the intake barb by a hose (the fitting where the hose from the intake, or in robodeath's situation, he replaced it with a breather filter) is the PCV system's inlet. air will goes down the valve cover here. air will flows through the head and into the crankcase. when air is in the crankcase, it picks up oil vapors because here is where oil is being thrown around at hi temps and velocity. the air then travels into the breather chamber where some of the oil vapors are separated and drained back into the crankcase. the air travels from the breather chamber through a hose and to the PCV valve. the PCV valve is a one way valve. it opens when vacuum pressure is applied to the top of the valve. the pcv valve is connected to the intake mani by a hose so vacuum from the intake mani can put pressure on the entire system. keeping that in mnd, the PCV system is a closed vacuum system. vacuum is exerted on one end and pressure on the other. this will allow any pressure in the crankcase to be easily vented.

the problem is, when you have boost, the intake manifold and intake are pressurized. by having the hose still connected from the intake to valve cover inlet, it will cause the crankcase to pressurized too. remember, the intake mani is also pressurized at this same moment (no vacuum) so causing the top part of the PCV valve to not open. at this moment you have a sealed and pressurized crankcase.

what robodeath did was, instead of connecting the hose from the valve cover inlet to the intake barb, he closed the intake barb and replaced the valve cover inlet with a filter. when he goes into boost, the intake manifold is pressurized (so the top of the PCV valve is also pressurized).

The million dollar question here in robodeath's situation is.......................where does this positive air pressure go that has collected oil vapors from the crankcase when the rest of the pcv system is sealed under boost and he has a breather filter opened to the atmosphere?

answer------------> it goes out the breather filter, because thats the only place it can go under boost.

if you still have the hose attached between the valve cover inlet and intake barb instead of having just the breather filter, it will travel from the intake into the mani and into the combustion chamber where it will be burnt in the combustion chamber, lowering your octane rating of your fuel.

an answer to the two problems above----------------> connect a oil catchcan to the PCV system. I hope this helps, my fingers are sore ;)
Is it possible to build crankcase pressure with a EGR valve that IS working on a N/A b18c where the barb at the top of the valve cover is connected to the intake tube via a hose? I just finished my build and had it running for about 30 seconds when I turned it off and promptly heard a "squirt" sound. I looked under car and had about 1/3 cup of oil on the ground from my oil pan seal. Oil pan was torqued to spec.
86mm bore 96mm stroke 14:1 compression. Is it possible that the piston rings are not yet "seated" and therefore i'm getting excessive blowby? I'm confused. Honestly, I can't believe i have gotten this far with the build. I'm really quite a noob at this stuff.