like the title says, oil catch cans and how to hookup and whats the best product on the market,, also if you got pics then come off of them

i also did the search but did not find to much info thought i might freshen up the subject

 

theres info but id love to see pics of them on a prelude motor more likely

 

here's mine, in a civic though...

modified greddy catch can, k&n filter on top and a release valve on the bottom with Earl's lines and fittings.





here's the back of the valve cover...its not that great of an angle though , but anyways the point of this picture was to show that the stock breather valve (or whatever it's called) has been removed plugged up

 

nice setup, if you don't want to modified your valve cover, people usually connect their catchcan on to the plastic pvc valve that is connected to the intake manifold.

 

that is a really nice setup, gives me some good ideas.

 

is it ok for me to just put a breather filter on the valve conver and not have a chatch can. someone told me it can cause blow by to not mess with the PVC system

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by soopafly828 &raquo;</TD></TR><TR><TD CLASS="quote"> </TD></TR></TABLE>
Typically, a catch can is used between the PCV valve and the intake manifold to capture oil out of the PCV charge. How exactly does your setup work?

 

The easiest thing is to buy a 5-10 dollar fuel filter from an auto parts store and just put it in-line from the PCV to the intake manifold...

You'll see the filter get dirty after about a day...

 

um..... you still have you PCV valve connected.... doesnt that kind of defeat the purpose of the catch can?

 

Heres another Easy Way to add an -12 to the valve cover from Z10



and another way to add your second line to the back of the block

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sharkcohen &raquo;</TD></TR><TR><TD CLASS="quote">
Typically, a catch can is used between the PCV valve and the intake manifold to capture oil out of the PCV charge. How exactly does your setup work?</TD></TR></TABLE>

yeah i really dont see how that setup could do anything. how is air suposed to circluate ? it might look like its working when you drain the catch can but that is prob just oil that the valve train has slung down your hose.

awsome info on catch cans.---&gt; http://www.beesandgoats.com/bo...l#PCV

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Turbo Sam &raquo;</TD></TR><TR><TD CLASS="quote">um..... you still have you PCV valve connected.... doesnt that kind of defeat the purpose of the catch can?</TD></TR></TABLE>

I dont think it would work, Thats how i've seen a one people do it on a big block ( i dont know if it did anything then either) but not on a honda engine. I think he need to go post those pics in the FI forum and see what they say about it.


*edit*

If you look at the engine pic it also has a filter valve onto of what i think is the catch can. maybe the whole intent of this set up is just a modified breather and not a catch can.

 

The way the connections should go is like this:

-A tube from intake (the one before the TB) to the crank case. This is like this stock so you don't need to mess with it.

-A tube coming out of the crank case were the pcv valve is (remove the pcv), going to the catch can input.

-A tube coming from the catch can output, going through a PCV valve, then going into the intake mani.


intake----&gt;crankcase----&gt;catch can----&gt;PCV valve-----&gt;intake mani

 

I don't see how that one pictured above would help at all . . . the point of a catch can is to intercept oil trying to make it's way into the intake manifold.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 577HondaPrelude &raquo;</TD></TR><TR><TD CLASS="quote">intake----&gt;crankcase----&gt;catch can----&gt;PCV valve-----&gt;intake mani</TD></TR></TABLE>
I agree.

 

There are 2 ways to run them.

1) From the IM to the catch can then from the other port of the catch can to the PCV valve.

2) From the breather cover on the valve cover to the catch can and from the catch can dumping into the atmosphere.

Basically I do not want to recirculate the gasses back into my system, so that is why I run it way #2. FI gives you a high amount of crankcase ventilation.

 

maybe thats y my **** has mad oil leaks... lol

 

anthony... i got my intake side of the turbo tapped... that going to the catch can.... then from the other side of can up to the crankcase vent.... good???bad..??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrecisionH23a &raquo;</TD></TR><TR><TD CLASS="quote">

There are 2 ways to run them.

1) From the IM to the catch can then from the other port of the catch can to the PCV valve.

2) From the breather cover on the valve cover to the catch can and from the catch can dumping into the atmosphere.

Basically I do not want to recirculate the gasses back into my system, so that is why I run it way #2. FI gives you a high amount of crankcase ventilation.</TD></TR></TABLE>

very clearly put

oh yea thats a purdy engine bay :drool:

 

#2 will ONLY catch oil when operating under boost, AND if you take out the PCV valve. If your at idel or at no real boost then the oil will still be going into your IM, because the IM will be pulling air from your crank case. It will however try to push it the other dirction when the car is under boost. Your PCV valve will NOT let air flow this way though. The PCV valve is a one way valve. The reason it's a one way valve is because, in the event of back fire it will not let the back fire pressure/gasses/fire enter your crank case (that would be a bad thing!)

The way I said will always catch the oil under any condition, because the air will allways flow one way no mater what. The pressure before the TB is allways higher than the pressure in the IM, even under boost. Air flows from high to low.

This is the only way IMO:
intake----&gt;crankcase----&gt;catch can----&gt;PCV valve-----&gt;intake mani

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 577HondaPrelude &raquo;</TD></TR><TR><TD CLASS="quote">#2 will ONLY catch oil when operating under boost, AND if you take out the PCV valve.
</TD></TR></TABLE>

Incorrect. It will catch oil that is being pressurized and thrown around in the crankcase. Trust me, when under load there is a lot of it being thrown around. When I didnt have a catch can my hood had a huge *** oil splotch of where oil was shot out. That was the only reason I installed the kit the way that I did.

If you are simply getting the kit to get the kit, then you are wasting your money. It does nothing for stock motors. Go ahead and install it the way it was designed to be installed. You can get away with way #2 if you have to though.

 

and how is your crankcase being pressurized? Under boost it is, but when not in boost it's not pressurized.

Take out your PVC valve and blow in it. You will see that it only lets air flow in 1 dirction. Maybe the pressure of the boost is overcomming the one way valve and letting air blow though, but still it's not the ideal way.

 

this is like the song that never ends..

pcv is a one way valve... i know im leakin oil all over this mother bitch the way i have mine.. so i know mines not right here how it SHOULDNT BE DONE (Intake--&gt;catch can input...Can output to crankcase)
haha

 

Just out of curiosity looking at the photo. It looks like (though the line dissapears so I'm assuming things) the line comes off the breather on the passanger side of the valve cover goes to the GReddy catch can, and then back around to the lower drivers side of the valve cover that's wrapped in heat wrap. While the stock PCV valve and line remain as it is stock. If this is the case then there's something wrong but if you're venting to the atmosphere (I don't see a port on the catch can that goes directly to the atmosphere) it will still work as there's plenty of pressure inside the crank case (boosted or otherwise) to send air though.

 

Ok here is why I did it the way shown:

1) When running a turbo, you simply use a breather filter on the valve cover instead of running a line from the breather on the valve cover back to the intake. This will vent everything out of the crankcase into open atmosphere.

2) Turbo honda's generate a lot of crank case pressure and frequently shoot oil out through the breather cover.

3) Why on earth would you run a line from the valve cover to the intercooler charge pipe to have all that junk and hot vapor re-enter into your system to be re-filtrated over and over again? Have you ever seen a FI car under 10-20psi of load on the dyno with an open hole in the breather? You'll see a large stream of oil and hot vaporous gases just shoot out. Do you want that to recirculate in your system? **** no, not today. Thank you very kindly, but thanks for asking.


So with that known.... I simply have the OIL CATCH CAN for one reason. TO CATCH OIL, it is called a oil catch-can right?. The line is ran from the valve cover to the catch can to catch oil, and all vapors will then dump into the open atmosphere.

It's not ******* rocket science.

 

So PrecisionH23a are you still running the PCV on the valvecover with the line to the IM straight through aswell?

I'm gonna try your system, but unsure on if your still running the PCV. Also if you are, in boost the PCV will close and the CC pressure will be forced into the can, but wouldn't this still suck oil into the IM under vacum when the PCV is open?

Let me know..