<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by swlabhot &raquo;</TD></TR><TR><TD CLASS="quote">I'm planning to do the following on my boosted setup:

1) Run a line from the stock nipple on valve cover to atmosphere.
2) Attach an AN fitting onto the turbo intake pipe. (vac source - open to directional airflow into turbo)
3) Hookup a line going from this fitting to one port (Port A) of a sealed catch can.
4) The 2nd port (Port B) of the catch can goes into the stock pcv.
5) This step is optional as I'm also thinking of teeing Port A of the catch can and run a line from here going into the IM with a check valve. This is to allow extra vac assisted ventilation when not in boost.

Any thoughts?</TD></TR></TABLE>

thats why i run pcv to manifold to assist while not in boost, i use oem brake check valve btw, others may allow pressure below 2-3psi to pass it all depends on the the type of inline check valve. my theory is simple on modifying the car, keep it close to stock as possible, so i retain oem pcv valve and connect it to intake manifold it was designed to work w/ IM, if connected to compressor, this i dont know about, but is it possible to draw too much vaccum at wot? - that would be my concern..

 

If you leave the stock pcv system on, the block would not be able to ventilate through the stock pcv when you are in boost, and so would solely rely on ventilating through the valve cover. So more restrictive on the block to breathe due to less ventilation paths available.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by G"UNIT &raquo;</TD></TR><TR><TD CLASS="quote">Would it work ok if u just did a catch can setup on the valve cover and left the stock pvc system on? </TD></TR></TABLE>

that would be extremely restrictive and likely to cause damage, you want to make sure you don't have any pressure going back into engine, leaving stock pcv valve connected to IM without check valve can cause damage

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec.dc2 &raquo;</TD></TR><TR><TD CLASS="quote">

thats why i run pcv to manifold to assist while not in boost, i use oem brake check valve btw, others may allow pressure below 2-3psi to pass it all depends on the the type of inline check valve. my theory is simple on modifying the car, keep it close to stock as possible, so i retain oem pcv valve and connect it to intake manifold it was designed to work w/ IM, if connected to compressor, this i dont know about, but is it possible to draw too much vaccum at wot? - that would be my concern.. </TD></TR></TABLE>

The majority of the air would be sucked through the intake filter at the end of the intake pipe so I think the vac generated by the compressor at WOT sucking the air through the AN fitting would not be as great as the vac generated by the IM as the vac in pretty strong when not in boost. Also couple by the fact that you have quite a large area inside the catch can for the vac to travel through, so I dont think it would be an issue with too much vac. If anything I'm more concerned with too little vac limiting the vac breathing assistance by this setup.

 

That is what i figured. I am going to run a setup out of the back of the block and the valve cover. So where are you guys putting these inline checkvalves at?

 

what i was refering to was the line form the black box to PCV to intake manifold should be disconnected, that makes it similar to the Endyn setup. AKA if line that goes from black box to PCV, was cut open and had a filter on it, it would be similar to endyn kit, but probably not necessarily breath better.

the stock honda engine has 2 crankcase ventilations. 1. from stock catchcan to PCV to IM and 2. from valve cover to intake. the endyn setup addresses #1 but leaves #2 asking for help.

So, you need to suck out the pressure from the block and head. Endyn allows for open atmosphere of the block, just need to add some fittings to valve cover to help it out.

 

heres how i run my setup, not everybody likes runnning pcv to IM with check valves, but works for me

 

is it necessary to run the line back to the manifold?...can u just do this:

-take stock pcv out

-plug the hole

-open up the two other holes in the back of the block and put fittings on them

-connect two lines from the fittings to a catch with filter

-cap the manifold fitting where the stock went

my question is does the system need vacuum to vent out correctly? or can it vent out freely by just attaching a catchcan to the block?

 

you can do open breather setup.. this guy goes over several setups, i've been running mine for almost 30k miles

https://honda-tech.com/zerothread?id=1199935

 

Pressure will vent itself, no vacuum needed. But it doesn't hurt.

Why does everyone got to start with the silly pictures?

Just run the valvecover ports the way I posted the pic. Buy one fitting for the back of the block and run a hose from it to another seperate catch can.

Buy the z10 plug for the original pcv black box.

Stop with the silly pictures.

obviously there is more than one way to do this so the drawings do not help. Just create some vents with some catchcans, it doesn't really matter where.

The more vents the motor has, the better.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec.dc2 &raquo;</TD></TR><TR><TD CLASS="quote">heres how i run my setup, not everybody likes runnning pcv to IM with check valves, but works for me

</TD></TR></TABLE>


I think that the reason poeple dont like running the line to the IM is cause it isn't necessary with a boosted setup. With a stock or non0turbo setup I would think the vacuum from the IM helps crankcase evacuation. But with a boosted setup crankcase evacuation is most critical under boost. One thing I just realized too after some thinking. With your catch can setup like in the pic has your vacuum gauge ever showed you to be on the low side of vacuum? Reason I ask is cause if your catch can has a filter on top that is open to atmosphere, and the throttle plate is shut then I'm thinking it's throwing your vacuum reading off at idle. Not sure if the vacuum would be affected at partial throttle too, but that's something to think about.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cmGSR916 &raquo;</TD></TR><TR><TD CLASS="quote">is it necessary to run the line back to the manifold?...can u just do this:

-take stock pcv out

-plug the hole

-open up the two other holes in the back of the block and put fittings on them

-connect two lines from the fittings to a catch with filter

-cap the manifold fitting where the stock went

my question is does the system need vacuum to vent out correctly? or can it vent out freely by just attaching a catchcan to the block?</TD></TR></TABLE>

That setup should work fine for the block. The vacuum line is just another option that some people use to help crankcase evacuation. You can either have an enclosed catch can with your two inlets from the block and another inlet that goes to a vacuum source. The exhaust slash cut tube connected to the top of the enclosed catch can uses the exhaust gas flow in the downpipe, or exhaust system to induce a vacuum in the slash cut tubing.

Your other option is to just run a filter on the top of your catch can so that it is vented to the atmosphere.

 

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


I think that the reason poeple dont like running the line to the IM is cause it isn't necessary with a boosted setup. With a stock or non0turbo setup I would think the vacuum from the IM helps crankcase evacuation. But with a boosted setup crankcase evacuation is most critical under boost. One thing I just realized too after some thinking. With your catch can setup like in the pic has your vacuum gauge ever showed you to be on the low side of vacuum? Reason I ask is cause if your catch can has a filter on top that is open to atmosphere, and the throttle plate is shut then I'm thinking it's throwing your vacuum reading off at idle. Not sure if the vacuum would be affected at partial throttle too, but that's something to think about.</TD></TR></TABLE>

If the catch can is sealed then it shouldn't be a problem but if it is open top with filter then I would think that the IM would also be sucking through this from the atmosphere

 

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

If the catch can is sealed then it shouldn't be a problem but if it is open top with filter then I would think that the IM would be sucking through this from the atmosphere </TD></TR></TABLE>

Yup, that's what I was thinking too. The stock PVC black box can be used, but there should be the check vlave so that boost cannot enter the black box from the IM, however vacuum from the IM can suck air from the black box to help crankcase evacuation.

I dont see any reason why an aftermarket catch can should be connected to the IM with a check valve in place. Unless your reason for doing so is to improve crankcase evacuation while driving the car out of boost. But if the catch can is open, then you run into the problem we are talking about. If the catch can is sealed with the vacuum line going to the IM to prevent any idle or partial throttle vacuum problems (if one even exists) then the catch can would become useless under boost cause the crankcase pressure isn't being evacuated cause the can isn't vented to the atmosphere or vented through vacuum assisted methods.

EDIT: maybe I'll go read up some more on dasher's catch can thread and see if he ran into this problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cmGSR916 &raquo;</TD></TR><TR><TD CLASS="quote">is it necessary to run the line back to the manifold?...can u just do this:

-take stock pcv out

-plug the hole

-open up the two other holes in the back of the block and put fittings on them

-connect two lines from the fittings to a catch with filter

-cap the manifold fitting where the stock went

my question is does the system need vacuum to vent out correctly? or can it vent out freely by just attaching a catchcan to the block?</TD></TR></TABLE>


That is my biggest question.. Can i just cap off where i have the pcv hooked to the IM? So does a catch can need a vacuum source to work correctly?

On the valve cover. So just add 2 fittings in the valve cover and get a catch can with a filter on top?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by G"UNIT &raquo;</TD></TR><TR><TD CLASS="quote">
That is my biggest question.. Can i just cap off where i have the pcv hooked to the IM? So does a catch can need a vacuum source to work correctly?

On the valve cover. So just add 2 fittings in the valve cover and get a catch can with a filter on top?</TD></TR></TABLE>

Are you taking off the stock PVC black box? if so the yes you can just cap off the IM vacuum hole that went to the black box. Dont forget to seal off the hole in the block behind the block box once you remove it.

About he vacuum source, like I mentioned before a lot of people use it as an option. You can either have the catch can open to atmosphere with the filter on top. Or you can use a sealed catch can with inlets going to the block, and 2 outlets for the drain line and the other outlet on top for the vacuum source. The filter method is going to be the easiest to do.

For the valve cover you have the right idea. I'm running just one line at the front of the VC for my setup though. Hopefully that will be enough.

 

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


That is my biggest question.. Can i just cap off where i have the pcv hooked to the IM? So does a catch can need a vacuum source to work correctly?

On the valve cover. So just add 2 fittings in the valve cover and get a catch can with a filter on top?</TD></TR></TABLE>

but then thats just venting it for the head...the block, crankcase, will need its own venting like what that were saying previosly...so will have to do the same for the block...correct me if im wrong cause i dont know much about this stuff

 

Which catch cans are working out the best?? Z10,endyn, etc

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by G"UNIT &raquo;</TD></TR><TR><TD CLASS="quote">Which catch cans are working out the best?? Z10,endyn, etc</TD></TR></TABLE>

Well the Endyn kit uses the same style catch can as the Moroso one does. However Endyn's has two side ports with 3/8" NPT female holes and a 3/8" NPT drain. Their kit includes hose barbed fittings that go into the can, as well as the 2 Honda fittings that go into the back of the block and the freeze plug. I think they also provide you with some line too, but I'm not sure. The Moroso kit has one -12AN male port and a 3/8" NPT drain in the bottom. Below is a pic of my Endyn can which I bought used and my Moroso can (p/n 85465). The barbed fittings that go into the side of my Endyn catch can use 5/8" inner diameter hose.

I didn't take a pic of the freezer plug cause the guy that sold this top to me still needed it. I also didn't take a pic of the SS line as well as the hose clamps for the breathers. The left is my used Endyn as you can tell from the slightly used filter. Sorry that one is out of focus.

EDIT: the Moroso can on the right has my -12AN to -10 AN reducer and the -10 AN slip fit hose ends. I'm using 5/8" ID clear, vinyl reinforced hose for my catch can lines.

 

where can i find me one of these kits...couldnt find any in the sponser forum

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cmGSR916 &raquo;</TD></TR><TR><TD CLASS="quote">where can i find me one of these kits...couldnt find any in the sponser forum </TD></TR></TABLE>

Are you talking about the Endyn kit? usually you can find them used from another member. Or you can just get them directly from Endyn at http://www.theoldone.com

There is a Moroso can that is available but it has just one 3/8" NPT port instead of two like the Endyn. You could buy that and have another hole drilled and an aluminum barbed or -AN fitting welded on.

summitracing p/n MOR-85470

http://store.summitracing.com/...h.asp

 

so the question I want to know is-

from the valve cover pic on page one.

I was wanting to do mine like that- and then get a 2nd z10 catch can for the crankcase.

Does that valve cover setup work?

Also- does the z10 setup have the drain return back into the crank case?

 

I am still debating on if i am going to use the drain back feature. I might just manually empty it. Not sure yet.
Does the edyn kit come with the plug for the back of the block where the black box was. I think I am going to run a edyn on the back of my motor and a z10 on the valve cover setup. How fast do your catch cans fill with the valve cover setup?
I read dasher thread and it anwsered alot of questions. Great thread.

 

there is no filter on top of catch can, everything is sealed and closed of, only thing thats open is the check valve that acts as a vent (or i think it does under pressure), its one way so idle was not affected after i installed it.

 

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

Yup, that's what I was thinking too. The stock PVC black box can be used, but there should be the check vlave so that boost cannot enter the black box from the IM, however vacuum from the IM can suck air from the black box to help crankcase evacuation.

I dont see any reason why an aftermarket catch can should be connected to the IM with a check valve in place. Unless your reason for doing so is to improve crankcase evacuation while driving the car out of boost. But if the catch can is open, then you run into the problem we are talking about. If the catch can is sealed with the vacuum line going to the IM to prevent any idle or partial throttle vacuum problems (if one even exists) then the catch can would become useless under boost cause the crankcase pressure isn't being evacuated cause the can isn't vented to the atmosphere or vented through vacuum assisted methods.

EDIT: maybe I'll go read up some more on dasher's catch can thread and see if he ran into this problem.</TD></TR></TABLE>

in my case with another check valve with t fitting to atmosphere should allow ventilation from crankase, the reason for checkvalve right before IM (as seen in picture) is to prevent positive pressure from going back into the engine, i know pcv valve should not allow that, however from reading on this side pcv valve alone is unreliable and will fail.