So is it incorrect to mount the catch can In this config?

Passanger pvc > catch can < driver pvc

Block plenum port, intake port.

Oil consumption g35/350z fix: http://youtu.be/uwQeG6aruqE

 

resubbed. its been awhile..

 

Technically, yes. That will break the PCV system.

 

Same situation, still haven't checked for leaks but will do asap. Would like to give this a shot. Are you referring to a revup or hr engine? I'm on a 2004 VQ35DE regular.

 

I have a revup. I scrapped the krankvents, they did not work.

I picked up a nicer baffled catch can but haven't caught much.

I did nearly eliminate my oil burning by getting a tune. I found my AFR was into the high 15-16's. I also stopped engine breaking/coasting at higher RPMs, which could be the real reason I slowed oil consumption so much.

 

Has anyone tried the Catch cans from Jegs ?

I like this guys setup quite a bit


Doing the Passanger pvc > catch can < driver pvc

and blocking the plenum port, intake port.

 

Project Import builds a kit just like that guys using a Moroso catch can.

 

Both these kits are basically what I ended up doing. I have a -8 AN off my pcv to a Radium auto catch can inside the front bumper with a filter venting to atmosphere. Driver side vent is just a K&N filter, then capped the intake and plenum.

Car seems happy and runs just fine, and I don't have that stupid looking catch can right in the middle of my bay when I pop the hood.

 

Where did you end up mounting yours as a question? Also when you say off of your PCV, do you mean you put a -8 in the valve cover? Or did you leave your PCV in the valve cover?

 

Here is what I did with mine.

(Please dont hate on the JB weld...I am replacing the can soon)

 

Can't hate on JB weld, has gotten me out of a few tight spots on my car. I noticed that you connected the catch can back into the intake manifold though. Not the best because it still lets the oil vapors back into the combustion chamber diluting the fuel mixture. I am sure it helped catch a lot of the oil passing through the PCV valve though.

 

Thanks for not hating .
Yeah I did connect it because initially I had it venting to atmo and the driver side was also connected, however I was getting really weird idling issues and noises. I checked all the lines for leaks but for the life of me I could not find any. Also I was not a big fan of the oil smell.

I installed this can a while before I made this video, and if you notice my intake is super clean. I really mean clean, I ran my fingers all over the inside and zero oil, even on the intake side. The catch can is also baffled so w.e vapors go back into the motor are much cleaner than before.

 

Its mounted to the aluminum crash bar inside the front bumper. It is accessible through the hole where the hood locking mechanism is, or by taking the bumper off. And yes, I have a -8 AN fitting coming off the passenger side valve cover -> to a vent to atmosphere can with filter. I have no "pcv" valve anymore it just always vents to atmosphere, the plenum and intake holes are plugged. Driver side valve cover has just a filter and the middle crossover is untouched just added a Z1 silicone hose.

I'll snap some pictures later.

 

Under the bumper? That sounds like it would be fun to empty. Also Project Import post another update for there ventilation kit. Check it out, seems like good info.

 

It's not really very difficult. I just check it when I take the splash shield off to do an oil change. How much oil do you really think it accumulates? My previous setup collected about three tablespoons per year. (This was a recirculated system that still had the PCV valve and pulled vacuum from the plenum).

If you need to check it more often... your engine is probably fukked anyways.

 

so is the project imports way better or the original one that OP showed us?
The OP one connects to only the passenger side

 

The OP one connects to the PCV system, it's a complete system, you don't have one in each side on a normal setup because it's all the same system; common crank.

 

ok then so my question is,
Is the Saikou Michi catch can more efficient, or is the Project Import method more efficient?

 

The Saikou can (which i will note has *really* gone up in price) keeps the PCV system functioning per factory specs and just filters oil that makes it through.

The PI system breaks the PCV loop and does whatever the f$%k it likes. I do not like that style because the metered air inside the system, is now allowed out and the engine cannot run as it once did.

 

PCV system was only introduced for emissions reasons. Thank you EPA and CARB. They wanted the oil vapors not to be allowed back into our atmosphere so developed the PCV. Its crap go check out just about every pre 1976 vehicle made, no PCV. All the PCV is good for is octane dilution. Thus less power, more knock. Metered air is read by the MAF and then the throttle body also has a calculated volume in the intake mani for idle. Installing the PI can does just about nothing to this. I can testify I have it on both my G and Z. But even PI put down that if you are really concerned with this fact to perform the idle volume relearn. But I never did and have had both cars retuned since then and the base AFR's were spot on.

That Saikou can is universal and only has one port. Their design is nice with the three layer mesh. But if you are not using both ports on the VQ whats the point. Both ports will release oil into the engine. And both ports are under engineered by Nissan so much so that I had oil spraying out of the driver side port on my TT 350Z because the size of the hose is not the internal size of the valve cover.

Best is to modify the valve covers, allowing relief of crank case pressures and using a baffled system like PI's.