Where to install Oil Catch Can & WTH is that?

[GIPONU]

i might sound annoying, cos i have no clue wat so eva, but here goes.
where do i install a catch can on a dc4?
does it connect in & out to the hose thats in the middle of the picture that horizontal?
http://h1.ripway.com/GIPONU/engine.JPG

and wats that? cos its looks like a oil catch can for some reason?
Situated there.
http://h1.ripway.com/GIPONU/wth1.JPG
bit closer....
http://h1.ripway.com/GIPONU/wth2.JPG

thanks in advance

[aaronng]

Pics not working.

[GIPONU]

errr, i would fix ur problem if i knew how. really i would, cos i want to know wat it is. any suggestion how to make the pics work for u?

[CRXer]

Yes,catch can connects in that hose

The black thing is the fuel evaporative emissions charcoal canister

[GIPONU]

oh sweeet thanks heaps buddy

[Boban]

Backyard special (no it's not my car)

http://i171.photobucket.com/albums/u286/80ban/catch_can_installed_closeup.jpg

[aaronng]

Edit: Finally the pics are loading.

[Mikey Coupe]

i'm actually making my own catch can, its quite simple with a bit of know how.

your catch can should have an inlet and an outlet. disconnect the hose in from the top of the head to the plenum. you will need extra lengths of hose for this.

its just a matter of getting a hose from the head then into the inlet, then another hose from the outlet to the plenum. unless of course you want to put an oil breather so no oily air goes back through your motor. but its illegal. i spose you could always hide the filter somewhere. if you do, don't forget to block the hole in your plenum, otherwise you'll come into problems.

[GIPONU]

Backyard special (no it's not my car)

http://i171.photobucket.com/albums/u286/80ban/catch_can_installed_closeup.jpg
thats cool, but im adding the catch can for abit of bling cos its the cusco one.lols


Could you host them on imageshack.us please?
dw,i got the answer i needed.lols, and how come ur the only one which cant see the pics O.o but yeh, thanks for attempting


i'm actually making my own catch can, its quite simple with a bit of know how.

your catch can should have an inlet and an outlet. disconnect the hose in from the top of the head to the plenum. you will need extra lengths of hose for this.

its just a matter of getting a hose from the head then into the inlet, then another hose from the outlet to the plenum. unless of course you want to put an oil breather so no oily air goes back through your motor. but its illegal. i spose you could always hide the filter somewhere. if you do, don't forget to block the hole in your plenum, otherwise you'll come into problems.
haha, sounds good. but confusing to my knowledge, thanks for the tip though

[aaronng]

http://h1.ripway.com/GIPONU/engine.JPG
That is the PCV inlet. Air flows from the intake manifold into the rocker cover. You don't need a catch can there. You want a catch can after the outlet of the PCV, which is on the block.

[fatboyz39]

Isn't that correct? You would want to filter the oil before heading back into the intake manifold.

[GIPONU]

errr watttt?!?!?!
so, whos more correct?
cos i have 2 answers now and both sound right to me.. :confused::confused:

[Illegal]

Look I have this done, and all my friends have 10 sec turbo cars, and they have to have them. (but thats a bit of a different reason though)

First, all that crap going into your intake, that double metal tube with the 4 rubber hoses can go. The one hose (lower) is long enough to go from the back to the head by itself, the other hose running from the valve cover to the intake is what the catch can will be put in between. I removed my charcoal canister and put mine in that location. Mine is from www.getnrg.com

The hose will go from the valve cover to the can, then back from the can into the intake, thus trapping any unwanted oil, or blow-by soot from getting back into your intake, and mucking up the tps sensr, map, throttle bodie, ect.

If I was home I was home I could post detailed pics of mine, but I'm at work. Sorry.

[GIPONU]

Look I have this done, and all my friends have 10 sec turbo cars, and they have to have them. (but thats a bit of a different reason though)

First, all that crap going into your intake, that double metal tube with the 4 rubber hoses can go. The one hose (lower) is long enough to go from the back to the head by itself, the other hose running from the valve cover to the intake is what the catch can will be put in between. I removed my charcoal canister and put mine in that location. Mine is from www.getnrg.com

The hose will go from the valve cover to the can, then back from the can into the intake, thus trapping any unwanted oil, or blow-by soot from getting back into your intake, and mucking up the tps sensr, map, throttle bodie, ect.

If I was home I was home I could post detailed pics of mine, but I'm at work. Sorry.



so ur saying..
Red marked item is where the oil catch can should be installed between.
and yellow marked hoses can all go?
http://h1.ripway.com/GIPONU/engine3.JPG

[Illegal]

the hose in red shoudl never be touched. Thats the Pcv system. It's for pressure release. The reason you shouldnt put just a breather filter on the valve cover and plug the intake, is because technically thats a vacume leak. The catch can keeps the system sealled, and still doesnt let the crap get back into the motor via the intake. (I know it wasnt brought up yet, but if anyone recomended to you to get that little filter, it's not worth the $10)

The one in yellow is where the can will be in between, and the lower hose that is in yellow, will go to the same places it's going now, but without that metal crap anymore. the part thats further back is long enough to reach without the metal and extra stip of hose.

[GIPONU]

ok, that sounds more understandable now.
i'll just sit around and see if any1 else has something to add b4 i install it.lols
thanks heaps though

[aaronng]

Hmm, I might be wrong as it seems that the yellow line is your PCV inlet and the red is the PCV outlet. In that case, put the catch can in the middle of that red line. The outlet is the one which releases gas with the oil vapour.

[GIPONU]

k, so i was hanging out with my friend at the workshop changing oils for the cars.
and yeh he told me to install it when tehre yellow lines are.
so, thread is answered :D

[aaronng]

Yellow line won't collect much oil though. You'll collect more from the red line.

[fatboyz39]

Optimal setup is to vent it to atmosphere (illegal).

[Limbo]

yeah well i would use a proper catch can, i used the fuel filter method before and was pulled over by the police and then given a defect. Their excuse was 'Not standard'. Better to keep it out of their view

[DLO01]

Catch can should be installed on the Red line. That is the PCV valve on the red line, in the rocker cover (you can see it). Pull it out and you will find (by blowing through it) its will only flow one way, toward the IM.

Leave the other hose as it is.

Its a closed system then. Air comes in from intake arm to engine, out through valve, through Catch Can to catch the oil, then to intake manifold.

[Illegal]

Optimal setup is to vent it to atmosphere (illegal).

wrong., and if you do have blow by, you'll get a nice dirty engine as well.

[Illegal]

Catch can should be installed on the Red line. That is the PCV valve on the red line, in the rocker cover (you can see it). Pull it out and you will find (by blowing through it) its will only flow one way, toward the IM.

Leave the other hose as it is.

Its a closed system then. Air comes in from intake arm to engine, out through valve, through Catch Can to catch the oil, then to intake manifold.

you do not have blow by that way, it's for pressure. Gsr's and type-r's have a can for this right on the back of the block already.....

[Illegal]

these pics were of my old motor, two motors ago I think, but you get the point by looks.


http://img.photobucket.com/albums/v509/illegalb16/Car%20sale%20pics/DSCN1491.jpg

http://img.photobucket.com/albums/v509/illegalb16/Car%20sale%20pics/DSCN1490.jpg

[GIPONU]

ok, umm. im still not sure which is more correct.
but i'll point out wat i've noticed.

the ppl telling me to install it on the yellow line, have vtec engines, theresfore does not have that pipe where the red marking is.

and the ppl that are telling me to install on the red, i dont really trust the red one cos of the color red.cos red means wrong.. hehe my badd, shouldnt have used red =.="

[aaronng]

ok, umm. im still not sure which is more correct.
but i'll point out wat i've noticed.

the ppl telling me to install it on the yellow line, have vtec engines, theresfore does not have that pipe where the red marking is.

You're right, the VTEC engines don't have the PCV outlet at the top like your engine, theirs are at the block. That's why I made the same mistake by telling you not to put it at the red pipe.

The right place to put a catch can is at the PCV outlet. Because that is where the oil vapour leaves the sump and enters the intake. Everyone telling you to put it on the yellow line, including Illegal are putting it at the intake side. The air from the intake tube is already clean since it is from the atmosphere and filtered by the air filter. So there is no point putting a catch can in between. To test, pull out the yellow pipe at the intake arm side and feel if the tube is blowing or sucking air out. If it is blowing, then put a catch can there. If it is sucking, then there is no point. Oh and remember to not let anything get sucked into that intake arm hole.

[Mikey Coupe]

opps, same goes for me, i didn't even see the rest of the picture. i only have the one hose coming from the head, into the intake. it SHOULD go before the tb. the yellow hose marked is the one you want. the hose going into the intake.
sorry for the error. my bad

[aaronng]

opps, same goes for me, i didn't even see the rest of the picture. i only have the one hose coming from the head, into the intake. it SHOULD go before the tb. the yellow hose marked is the one you want. the hose going into the intake.
sorry for the error. my bad

The one hose going into the head is the inlet. You want the catch can at the PCV outlet, which is a tube going from the block to the intake manifold AFTER the throttle body on a D and B series.

[dsp26]

ok, umm. im still not sure which is more correct.
but i'll point out wat i've noticed.

the ppl telling me to install it on the yellow line, have vtec engines, theresfore does not have that pipe where the red marking is.

and the ppl that are telling me to install on the red, i dont really trust the red one cos of the color red.cos red means wrong.. hehe my badd, shouldnt have used red =.="

DLO01 is right

i have a vtec engine (b16a2) and tested both lines for 2 months straight and not once did the yellow line collect anything.
http://img.photobucket.com/albums/v281/dsp26/Maintenance/Blow-By1.jpg

[dsp26]

where i had the filter coming off the pcv in the above pic kept colelcting oil and is now where i have my catch installed:
http://img.photobucket.com/albums/v281/dsp26/Maintenance/PIC00126.jpg

[DLO01]

Excellent test dsp26. :thumbsup:

So many people put their catch can in the wrong spot.

[bennjamin]

yup its common for even the JDM masters ( IE japanese) to put the catch can where it catches nothing.


The proper place is at or after the PVC itself , to "catch" excess oil vapour destined for the inlet manifold.
Ofcourse , it only does something on higher powered cars (excess blowby) and also if your current PCV isnt working properly (weaker spring causing the diaphragm to stay open during WOT and let more oil vapour thru

IMO just replace your PCV if its old.

[GIPONU]

ok, so. all i need to do now is disconnect both the lines attached to the inlet, not allowing objects to get into the inlet. and see which one is blowing air. and which ever one is blowing air is the one i connect it to.. correct?

this could be very useful for the next person who needs to know where to install a catch can :D

[bennjamin]

http://h1.ripway.com/GIPONU/engine3.JPG

On your engine , put the filter on the RED line.
The small connection you can see on the red line on the far left , is the PCV . Putting the filter here , filters excess oil vapour going to your inlet manifold ( shown on the RHS)

[GIPONU]

ok cool. that makes heaps of sense.
so then why do others still put it on the yellow line?
are they just wrong?

[bennjamin]

that yellow line is the INTAKE line for the PCV system. Air gets sucked in there , circulates around the block and back up again into the RED pipe into the inlet manifold. Putting a filter there does nothing as its only air going in
Anyone who put a filter there has it for show

[Illegal]

You're right, the VTEC engines don't have the PCV outlet at the top like your engine, theirs are at the block. That's why I made the same mistake by telling you not to put it at the red pipe.

The right place to put a catch can is at the PCV outlet. Because that is where the oil vapour leaves the sump and enters the intake. Everyone telling you to put it on the yellow line, including Illegal are putting it at the intake side. The air from the intake tube is already clean since it is from the atmosphere and filtered by the air filter. So there is no point putting a catch can in between. To test, pull out the yellow pipe at the intake arm side and feel if the tube is blowing or sucking air out. If it is blowing, then put a catch can there. If it is sucking, then there is no point. Oh and remember to not let anything get sucked into that intake arm hole.






omg, it's not fot the air comming from the intake filter, read my last post, it's for the blowby comming out of the head BACK INTO the intake. And I do have a pvc system, comming from the intake manifold down through the pvc valve into the STOCK catch can on the back of the block.

[bennjamin]

The pipe going from the intake to the head is the "intake" for the PC system.It recieves filtered air to be circulated thru the head and block) The end pipe is cut at an angle to promote induction. (that sits inside the inlet pipe in OEM)

[dsp26]

Illegal: bennjamins point directly above this is correct for all vehicles.

Blow-by comes out from the Block-->PCV-->PCV Valve-->Intake to relieve combustion gasses 'blown-by' the piston/rings back into the crank case/block. The reason theres oil is because the leaked combustion gasses mixes with the oil vapours in the block pushing them back out.

[bennjamin]

For everyone , refer to this WIKI blog about PCV systems...a good read up

http://en.wikipedia.org/wiki/PCV_valve

[aaronng]

omg, it's not fot the air comming from the intake filter, read my last post, it's for the blowby comming out of the head BACK INTO the intake. And I do have a pvc system, comming from the intake manifold down through the pvc valve into the STOCK catch can on the back of the block.

You're wrong. The yellow line is the inlet for the PCV system. Air ENTERS the rocker cover through the yellow line, goes down into the block and pushes out oil vapour through the PCV valve and back into the intake manifold. In this engine, the PCV valve and outlet is the red line.