Hi I have been read and I want to install a oil catch can. I know it goes inline with the PCV valve. My question is what do most people use. Do I just pick up a universal one from eeeee-bay.
I have also seen people use air water separators if I'm not mistaken.
Is there a right up on this. Does it go inline before or after the PCV.

 

I bought one off of eBay and put it in over the summer. Does a good job. Make sure you get 3/8" fuel hose. At least 5 feet of it. Pretty cheap too. If you think your PCV valve needs changing, then you should replace it if you're going to do this. I'll upload a pic tomorrow.

PCV --> Catch --> Intake Mani

 

Thanks. Did you just bypass the metal line all together. Would really like the see how you mounted it

 

Yes, the S shaped metal tube on the manifold you can take off. Chuck it because it's crappy. Fed the tube from the PVC to the catch can on the driver's side. and back to the manifold.

 

Why in the Hell did Nissan not use one in the design. I have seen other cars with they.

 

99% of those Ebay catchcans are crap, but they are better than not having one I suppose. You have to know what to look for when buying a catchcan.

 

For a quick test to see if you need it, just install one of those plastic see through fuel filters inline. If it gets all oily and such, then purchase the can.

 

No test necessary. All of our manifolds collect oil due to the PCV blow-by. In a few weeks when my time frees up, I'll be on the hunt for a quality catch can and will start a thread with install etc. I have a few quality catch cans in mind already.

 

I recommend ADDW1 oil catch can at ebay . All aluminum metal with baffled. Do not use fuel and transmission tubing, it collapses in high rpm. Used PCV tubing with SAE 30R7 specification, you can buy this 3/8 tubing at advanced auto parts.

 

The baffling part of the ADDW1 is good (I'd still like to see its schematic or cross section to make sure it's done properly), but the rest of the internals from what I see isn't designed properly for maximum filtration/catching.

 

Here's looking forward to the thread. I haven't had time to install the one I bought last summer. I have a cheap eBay model that I may not install if I see a better one that works for the long haul.

The only thing that I was hoping to do differently is to install a drain hose with a ball type shut off valve to replace the bottom drain plug so it can be drained underneath the car with minimal effort.

 

My can is from eBay but it's baffled. Not the best kind of baffled but it's not just an empty cylinder. It's a little heavy and yes I do think it's aluminum. It's thick too. Does the job well.

 

I made a PCV catch can 3 years ago and it has done it's job collecting that oil.

Parts needed:

1. Air compressor water filter
2. Three feet of 3/8" vacuum hose
3. Two air line quick release male couplings
4. Four small hose clamps
5. Teflon tape



Close up



The male couplings are inserted on both inlet and outlet connections of the filter using teflon tape. Slide the 3/8" hose over the couplings and tighten with a clamp.



To keep the setup from bouncing around I zip tied this PCV end to the harness.



The filter is zip-tied to a low gauge GND wire I mounted onto the plenum.

The plastic filter is close to the plenum but IMO it'll hold it's life. I release the oil from the filter's bottom valve into a cup ~500 miles. The inlet side of the filter connects to PCV valve and the oulet end connects to the plenum.

 

Because it's not needed.

 

Technically its not needed, but if you had one on your car from the time it came off the assembly line, it would definately keep you upper intake much cleaner. probaby woulldnt need to clean it up to and even pass the 150 k mile mark. but alot of fourth gens need new valve cover gaskets around that time,so its not much more work cleaning it during the time you have it off for a VC job

 

VMS baffled can is what's on my watch list