[NCEvets]

A few years ago I was thinking about installing a catch can between the PCV valve and the plenum, but pretty much decided not too after thinking it might only be necessary for modern diesels. However, after seeing all the crud in my plenum and intake manifold of my Itec system, I'm reconsidering. I have read a few earlier posts on the subject (like Blah blah blah), but am still wondering if it's necessary (I know, not ABSOLUTELY necessary but bear with me).

So, my main/first question for now is: If I do install a catch can, should I remove the PCV valve and run it directly from the valve cover or keep the PCV valve in place?

 

[itsmehb]

Installed one a few years ago after reading DSUZU'S opinion of one as being beneficial at removing some of the oil that would normally end up as deposits on valves. Mine has the PCV in place. I have close to 1/4 inch of oil in mine now so guess it's time to empty. If you do get one don't get one of the cheapy one's on e-bay. My first one didn't have any steel wool in the inlet that acts as a filter slowing down the vapor circulating through the can so the oil can accumulate on the filter and drip to the bottom of the can. The small knurled knob on the top of mine is a dip stick so you can see the oil that accumulates

and know when to empty it.

 

[Enemigo]

This is to help slow the clogging up of the PVC system from the oil burning, right?

 

[redcentinela]

Catch cans were intended to minimize blowby oil to reach plenum and valves in turbocharged and supercharged engines in order to improve detonation by minimizing oil entering into the combustion chamber. It can’t be good for a naturally aspirated engine as well. I installed one in my turbo Trooper. I kept my PCV valve.

 

[redcentinela]

NCEvets:
Here is my catch can. As you can see, I kept my PCV valve.