i just bought one for my car 88 crx with gsr motor, but i don't know what lines to hook it to. i haven't look at my car yet and i know how to hook it up on a type r manifold i just want to have an idea of where the lines are on the gsr manifold.

 

Look for the PCV valve just underneath the fuel rail. It sits right on a little black box off the back of the block. Then, after the PCV valve, it runs straight back to teh intake manifold.

 

Just an information. Don't think the catch can is going to suck all the oil and blow-by's. It will still return some portion of the oil back to your manifold. But not the nasty gunky looking ones. I thought I'd share.

 

im thinking that it goes in between the valve cover and the intake pipe........if you think about it, your car comes stock with an oil catch can. it is located on the rear of the block which is attached to your pcv valve....and in theory, it wouldnt do much good between the intake mainifold and the PCV valve........the oil from the valve cover would actually go into your tb and intake since that is where your motor breaths from as well.....havent you noticed that your TB gets dirty right there???

many of my friends say that its not necessary to do this on a daily driven motor, and is usually used in RACE MOTORS that arent supposed to last long!(like for example fully raced out motors for the track)....but if you wanted to go ahead an do it.....its up to you....this is my only my opinion and if anyone can explain it better, then please do....also there is lots and lots of info on this if you do a search........but like i said, i have seen many posts on this and i think it is WRONG to put it between the intake manifold and the PCV valve...hope someone else can vouch for this....

hope this helps!

 

The oil catch can goes in between the PCV valve and the intake manifold. The reason why, is because this is the direction of flow of the blow-by gases (and oil droplets). If you ever remove an intake manifold you will notice that the intake runners are very dirty and contain oil deposits (and possibly some accumulated oil). You do not want to hook the oil catch can between the intake tube and the valve cover, because this the fresh air feed into the crankcase. You can go to https://honda-tech.com/zerothread?id=147760 for a recent discussion on oil catch cans.

I have one hooked up the my '94 GS-R (the engine internals are stock) and I empty it very oil change (3,000 miles) and the oil catch can normally collects between 1/8 and 1/4 cup of oil. For this reason, I feel that there is a very good reason to have one. BTW, the stock motor doesn't come with an oil catch can, the part that was referred to is the oil seperator box.

 

you can't put it between the vavle cover and the intake pipe. reason being is that air goes into that hose into the vavle cover. reverse from what everybody thinks

 

EXACTLY!!!

 

like i said, just my opinion, and also i got this info from a guy who knows top fuel in japan....he ran it like the way i explained it so???????

also, how bout you call inline4, they will say the same? also i just talked to a tech from dynamic and they said the same as me.....another reliable source////this is exactly what he said...."you can use it between the pcv valve to the intake manifold, BUT NOT REALLY.. >>>IT IS MADE FOR THE VALVE COVER TO THE INTAKE TUBE"

i dont want to start a debate, but i am asking you to call any reputable shop that sells these catch cans.......thats all.....all i am doing is relaying info from some techs....also how do you figure that when you run your motor hard that oil doesnt get sucked into the TB?

oh and one more thing, i have a mechanic who works for acura.....calls that black thing on the block below the PCV valve a OIL CATCH CAN......?


just call those shops and ask them whats the real deal?

thanks for your insights!!!
no offense to anybody!!!
peace

 

isnt an oil seperator a "CATCH CAN"?

 

"Honda didn't design the slash tube and place it on the inside radius of the intake tube just ahead of the throttle body for nothing..they wanted to place positive pressure on the upper part of the engine to force the oil vapors to travel through the canaster to the pcv valve. " from theoldone.com
http://www.theoldone.com/archive/pcv-breather.htm

the catch can goes in between the valve cover and intake tube. ive installed a greddy and a cusco can and they both specify it to go there.

 

OK, let me start off by posting a diagram of the PCV system from the Helms manual. From the diagram you can see that FRESH AIR flows from the intake tube through the BREATHER HOSE to the top of the crankcase (ie. valve cover). You can also see that BLOW-BY VAPORs (and oil droplets) flow from the BREATHER CHAMBER through the PCV HOSE and PCV valve to the intake manifold.




Larger image: http://www.imagestation.com/picture/...d.gif.orig.gif


Now my question is, if FRESH AIR flows from the intake tube to the valve cover, why would install an oil catch can in between these two points?


Now if BLOW-BY VAPORs (and oil droplets) are traveling from the BREATHER CHAMBER through PCV HOSE into the intake manifold, would it not seem logical to place the oil catch can between these two points? Here is a diagram from T.O.O. ( http://www.theoldone.com aka. Endyne) which shows how the oil catch can should be hooked up and how it functions. BTW, T.O.O. has stated the same information that I'm stating on several occassions.



You can see that the oil catch can helps to seperate the oil droplets from the blow-by vapors.

Also, here is a picture of the oil catch can hooked up on T.O.O.'s SC Type-R. There is a black hose which runs from the PCV valve which is on top of the breather chamber to the top of the oil catch can. There is also a clear (but slightly oil stained) hose which runs from the side of the oil catch can to the intake manifold. You can see the clear (clean - not oil stained) tube connecting the valve cover to the intake tube.




Now, ask anyone who has an oil catch can hooked up between the intake tube and the valve cover (on a Honda/Acura) and see how much oil they collect in their catch can. I would be willing to bet that they collect very little, if any, oil.

Now, I'm not sure how other cars PCV systems function, so they may operate completely different and this would require a different hook up for the oil catch can. This may be the reason that some shops are saying to hook up the catch can between the valve cover and the intake tube.

Also, remove the intake tube and see how much oil you see BEFORE the throttle body. You should not see any oil BEFORE the throttle body.

Does anyone have any instructions for any oil catch can that they scan and post? I would like to see what they have to say about the installation.

No offense to anybody!!! If anyone has any comments, questions or info, please feel free to jump in.

 

The PCV valve is there to keep oil out of the intake.....it could be that yours needs to be changed....take your diagram to dynamic and/or any other reputable shop and they will be more than willing to point out the severe faults in your argument....TT

 

Can you tell me how the PCV valve is supposed to keep the oil out of the intake?

The PCV valve is a fairly simple device. It is a weighted valve which is closed by a spring and it is opened by vacuum pressure created by the engine. BTW, my PCV valve is functioning properly.


I have shared my understanding and knowledge on this subject. So, can you share yours without having to send me to someone else to explain the fault in my reasoning? If you have some information that could help the forum, please share it.