Any ideas?
Thanks.

 

There are build your own threads on this from Home Depot parts, but the plastic ends up cracking after a few years.
Just get a Jegs one.
Lasts longer and works right out of the box.

 

I made one, I used the aluminum water bottle with the smallest opening, you can buy it Kmart, Target. I drill two holes around 3 inches above the base, one inch apart (between the lower and upper hole) not large enough to place this two fitting ,sealed with oem Nissan liquid gasket
,
Attached the PCV tubing from the PCV valve to the lower hole, then another PCV tubing from the upper hole to the intake. Use the PCV 3/8 tubing not the transmission and fuel tubing. (Transmission and fuel tubing collapse in high vacuum)

The only problem the aluminum water bottle produced a hissing sound( not a leak but a high velocity air sound)

 

http://www.saikoumichi.com/OCC_page.htm. Check out the website. He has the CAD drawing on the website along with how its constructed. Its not just a can made to hold oil. Its legit and was made for blow by for much higher performing cars. Unfortunately this company wasn't around when the first pioneers started installing these on our cars.

 

I did one out of PVC tube. Thick stuff. No cracking. Couldn't find a catch can at the time that had the size in/out I needed. On my turbo, I ran a vacuum pump to vent the crank case, used big hoses.

Sealed the bottom with pipe glue. Used a standard rubber PVC cap on top, easy to remove to inspect and drain. One outlet just glued straight in. Inlet pipe went in but had a 90 degree elbow glued and aimed down so oil pulled in would be forced down to the bottom and not on through the "can."

 

This one is my temp one for now, I really don't want one of those fancy ones

Fittings are on, just waiting to change my plugs.

 

Wow. Mine would have to be emptied twice a week if I used something that small. That's in using it on the left/front valve cover. Yup, should probably do a compression test next time I'm messing around the bay.

A test I did on Maine was to just put a couple breather filters on the valve covers. Both oil saturated in roughly a months time. One on front valve cover was dripping oil. I could also smell the oil. Definately going for TWO catch cans myself.

 

I will replaced mine with this

Stay away from oil catcher with breather:
I got this from Nico club
If venting the valve cover either through a breather filter or catch can with breather filter(s), the factory PCV valve and intake port must be blocked off preventing those sources from sucking in unmetered air. (read: vacuum leak)

 

made my own, worked great for years now.

 

Aw, I like that!!

 

http://www.infinitifx.org/15-vq35de-...separator.html
http://www.infinitiscene.com/forum/t...-oil-catch-can

 

Really good info.. thank you for the link..so I'm blowing out a lot of white smoke from my front valve cover where I have my breather.. if I ran that to a catch can the out side of the can would go back into the manifold?

I'm thinking I can Tee it into the hose off of the PCV valve ( short hose off the PCV going back into the manifold) since the PCV is a check valve anyway .. am I right? Or would that still be considered unmetered air and it needs to go before MAF so it metered air??

I don't really want to drill out the PCV I rather keep that function as it.. but definitely need to add a catch can. Just not sure of the most effective way to have the car running optimally.

 

http://www.infinitifx.org/15-vq35de-...separator.html

Quite a few different set-ups there.

 

Right ,but those diagrams aren't for a 4th gen so its a bit confusing and doesn't answer my question about the metered air.


I just want to know If teeing both rear ( keeping PCV as is) and front Crankcase sources into Oil catch can IN and then back into Manifold will have the system operating correctly.. already the rear is unmetered air anyway isn't it? So Only the front valve cover was metered I believe by the MAF.

 

Same concept for a 4g. Identical. And yes, front is metered, but if DC'd, the front VC will then suck more air into the combustion chambers, and not be metered by the MAF. Hence modification of the rear PCV is needed to balance that.

 

Hhmmm my front is actually releasing a white smoke with oil mist now .. not pulling air in.

So should I choose a Catch can with 2 INputs so that I can then bring the front VC and tube off the PCV valve ( rear cover) to the oil CC then back into the manifold? But this would still be unmetered air cause is dumping back into the manifold anyway.

But that's why tuning comes into play I guess.. I'm running emanage Ultimate now with my SC and I need a fine tune anyway.

 

FMFS, SC. Damnit.

That changes things IMO. I was wondering about the white smoke. I would delte it, and vent both VC's. There are plenty o PCV threads in the SC/Boosted forum from what I remember.

Here's one I remember.
http://forums.maxima.org/8281111-post8.html

 

Thanks.. I will read up on it.