Oil catch can

[Cuong Nguyen]

Well after taking a look at my intake manifold, I plan to install a oil catch can. These little cans can be had on eBay for less than $20. The benefits of using one is that your intake manifolds will stay almost squeaky clean as all the oil vapors are being trapped inside the can instead of coating the insides of your intake manifolds. Also, your fuel may burn cleaner and better as air is not dirtied by the recirculated oil vapors. If your are experiencing a sticky throttle body, all that oil gunk coating your intake manifold is causing your throttle body to stick.

 

The catch can is placed inline with the pcv valve. You can do some booty fabbing and make your own out of a water bottle and some type of filter media (such as steel wool or poly fill) to catch the oil vapors. I've seen them built and work despite being cheesy looking. Function over form.

[JamesRich]

Yes these cans work great as long as you keep the hoses a short as possible.

James

[XSrcing]

Try to keep the hose from the block to the can from rising very far, a couple inches at most. And it is advisable to go with a slightly larger hose. This will keep it working as efficiently as possible.

[Kingman]

Or just atmospherically vent the vapors. They make little micro filters that stick on the valve covers.

[Cuong Nguyen]

The plumbing under the upper intake is just kind of rediculous for venting the vapors and for the throttle body warmer.

If you were just to vent the vapors atmospherically, the oil would just accumulate and make a mess eventually.

[MY1PATH]

I made a mini on that cathes the vapors and drains them back into the into intake after they condense.

http://www.nissanpathfinders.net/forum/index.php?showtopic=25541&view=findpost&p=469477&hl=&fromsearch=1

 

 

[Cuong Nguyen]

Pretty cool design.

 

I noticed on our motors that the front of the valve covers are vented to the intake tubing and the Passenger valve cover also vents to the pcv valve as well. Couldn't we just combine the two to better scavenge the vapors?

[JamesRich]

Pretty cool design.

 

I noticed on our motors that the front of the valve covers are vented to the intake tubing and the Passenger valve cover also vents to the pcv valve as well. Couldn't we just combine the two to better scavenge the vapors?

The vent going to the intake tubing is for fresh filtered air to go into the crank case as the PCV pulls the vapors out the opposite side of the motor. It is explained in the FSM on page EF&EC 143.

James

[Cuong Nguyen]

Cool. Learn something new everyday.