Catch Can set up for NA Ka24e - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

nsn240 · 12-12-2005, 04:50 PM

valve cover --> catch can --> intake OR
valve cover --> catch can --> atmosphere

simple as that

s13pignose · 12-12-2005, 08:48 PM

Ok so in my case it would be one end goes to the maf adapter then to the can, and the other hose goes from the can to the valve cover.

What about pcv valve, I read some where it's in a box??? I get the feeling that this is t'd of the pcv some howhttp://img.photobucket.com/albums/v1.../AirOilIn2.jpg

am I right?

s13pignose · 12-12-2005, 09:06 PM

Hey all motor KA I see what your sayin know about hooking up both the pcv and the valve cover, cause both are locations from where the oil comes from right? Only question is now, how does the air get back into the system, through the vent. Cause originally it sucked in filtered air from the intake right? See this is where I'm lost now. And with this setup is the pcv still connected to the intake manifold. If you can help me get this think I should have it down packed. I know I'm slow with this, but I'm not use to 240s.

To all who who helped, thanks

s13pignose · 12-13-2005, 10:13 AM

do I leave the pcv still hooked to the intake manifold doing it his way?

allmotorKA · 12-13-2005, 11:10 AM

Quote:

Originally Posted by s13pignose

do I leave the pcv still hooked to the intake manifold doing it his way?

If you use a catch can with a breather filter, then I would connect BOTH valve cover vent and crank case vent to it. Plug the port where the intake tube was connected to the valve cover vent. Plug the port where the PCV valve was connected to the intake manifold plenum.

If you connect the valve cover vent only (without connecting the crank case vent) then the intake manifold will be sucking air through the catch can breather. Here's why: Air flows through the catch can breather, to the valve cover, through the crank case, through the PCV valve, to the intake manifold plenum, and then to your engine. Take the valve cover off and look down the timing chain...guess what...you are looking into the crank case. The crank case and valve cover area are connected by a wide gaping tunnel created by the timing chain cover. You will have a large vacuum leak. Will your car run?...yes. Is it the right way to do it?...no.

Really, I wouldn't bother putting in a catch can. Why do you want to put it in?

s13pignose · 12-13-2005, 02:18 PM

OOOOOOOOOOOh okay gotcha. See I just didn't knwo if I should plug the manifold, thought so, but wasn't sure. So when I plug the manifod, how will the pcv valve function with no vac? Really having a can sorta gives me peace of mind, and I like to keep things clean and efficient as much as possible. I dunno I'm just like that, and I know it won't kill my wallet to do it lol.

Thanks alot, you've been more than helpful.

allmotorKA · 12-14-2005, 12:31 AM

In your application, if you want the catch can, it might be easiest to just connect the catch can to the valve cover. Then remove the breather filter and connect a tube from the breather filter connection to the intake where the stock valve cover was connected to...sort of like the photo you posted.

12-12-2005, 09:06 PM	#3
s13pignose Zilvia FREAK! Join Date: Dec 2005 Location: ?? Posts: 1,324 Trader Rating: (2) Feedback Score: 2 reviews	Hey all motor KA I see what your sayin know about hooking up both the pcv and the valve cover, cause both are locations from where the oil comes from right? Only question is now, how does the air get back into the system, through the vent. Cause originally it sucked in filtered air from the intake right? See this is where I'm lost now. And with this setup is the pcv still connected to the intake manifold. If you can help me get this think I should have it down packed. I know I'm slow with this, but I'm not use to 240s. To all who who helped, thanks Last edited by s13pignose; 12-12-2005 at 10:51 PM..

12-12-2005, 04:50 PM	#1
nsn240 Zilvia Addict Join Date: Aug 2005 Location: pa Posts: 642 Trader Rating: (1) Feedback Score: 1 reviews	valve cover --> catch can --> intake OR valve cover --> catch can --> atmosphere simple as that

12-12-2005, 08:48 PM	#2
s13pignose Zilvia FREAK! Join Date: Dec 2005 Location: ?? Posts: 1,324 Trader Rating: (2) Feedback Score: 2 reviews	Ok so in my case it would be one end goes to the maf adapter then to the can, and the other hose goes from the can to the valve cover. What about pcv valve, I read some where it's in a box??? I get the feeling that this is t'd of the pcv some howhttp://img.photobucket.com/albums/v1.../AirOilIn2.jpg am I right?

12-13-2005, 10:13 AM	#4
s13pignose Zilvia FREAK! Join Date: Dec 2005 Location: ?? Posts: 1,324 Trader Rating: (2) Feedback Score: 2 reviews	do I leave the pcv still hooked to the intake manifold doing it his way?

12-13-2005, 02:18 PM	#6
s13pignose Zilvia FREAK! Join Date: Dec 2005 Location: ?? Posts: 1,324 Trader Rating: (2) Feedback Score: 2 reviews	OOOOOOOOOOOh okay gotcha. See I just didn't knwo if I should plug the manifold, thought so, but wasn't sure. So when I plug the manifod, how will the pcv valve function with no vac? Really having a can sorta gives me peace of mind, and I like to keep things clean and efficient as much as possible. I dunno I'm just like that, and I know it won't kill my wallet to do it lol. Thanks alot, you've been more than helpful.

12-14-2005, 12:31 AM	#7
allmotorKA Zilvia Member Join Date: Nov 2001 Location: SoCal Posts: 204 Trader Rating: (1) Feedback Score: 1 reviews	In your application, if you want the catch can, it might be easiest to just connect the catch can to the valve cover. Then remove the breather filter and connect a tube from the breather filter connection to the intake where the stock valve cover was connected to...sort of like the photo you posted.