Oil Catch for PCV system

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I'm thinking about ways to make a catch system to keep oil from being shot into my intake. Does anybody have some ideas?
 
I'm being a little lazy here but this was brought up not that long ago so a seach should give you some good info.

I've been thinking about using a clear fuel filter to make a simple one on my Civic.

Greg
 
Looks like that Weapon R one on e-Bay even has a level sight on it. Very nice.

I can't view the Condensator page very well but I see something about "Town of Taber tries..." is that Taber, Alberta?

Greg
 
Why not just fix the PCV system?
dunno.gif
 
Thanks for the replies. I don't really think that there is much of a problem with the PCV system. In my experiance every system circulates a bit of oil in it, and mine isn't spraying oil into the intake or anything like that. I'm planning on cleaning out my intake system, including my intercooler, and I don't want any kind of buildup to occur over time, especially in the intercooler.
 
A good tip to clean the oil from the pcv out of the intercooler is to remove the intercooler and flush it with gasoline, its about the only way to do it. Thats the sole reason I rerouted my pcv, the pcv really makes a mess of the intake tract and i'm sure reduces intercooler efficiency.
 
A good tip to clean the oil from the pcv out of the intercooler is to remove the intercooler and flush it with gasoline, its about the only way to do it. Thats the sole reason I rerouted my pcv, the pcv really makes a mess of the intake tract and i'm sure reduces intercooler efficiency.
 
That actually is not a bad design. With the inlet at the bottom the vapors have to traverse through the filter material. The more times the vapor has to change direction the more oil will fall out. This looks very much like some of the aircraft oil vapor separators used on piston engines.
 
I have one on my SHO. Made it out of a 9" piece of 3" aluminum conduit. Use a piece of polypropylene down the center as a baffle which is sealed at one end. The ends are 3" plumbing rubber caps. I use two hose nipples, one one each side of the baffle as the intake and exit back to the PCV valve.

The PVC gasses which are mainly blowby gasses and are always present, will condense in the can. I then have a self draining feature that has a brass check valve in it.

I also have the fresh air intake part of the PCV system sealed so that there is a vacuum on the crankcase which builds up about 7" Hg of vacuum. This allows the brass check valve to be shut when the engine is running and open when the engine is off, draining the accumulated gunk out.
 
I saw a person who used a small inline air compressor air/ oil seperator for this. Worked really well and they in a variety of sizes. Easy to empty to with just a drain spout at the bottom.

For all those who say fix the PCV system....ummm on most cars there will always be some amount of oil that passes through the PCV valves and gets into the intake. If you have a turbo car it is much worse. This is just the way they are designed and run. My brand new 350Z has the same problem with oil pooling in the intake -- and they said it was normal.
 
This is a hot topic at tdiclub.com.

The simplest and most illegal is the simple draft tube running these gasses and fluids to ground. Some have made very ingenious PVC fitting to catch the oil and water. Some use a WW-II surplus oil separator off aircraft engines. Some use a specially milled aluminum catch system. Now Mann filters out of Germany is making a oil separator.

One of the things you want to make sure of is that you do not unduly restrict the flow of crankcase gas in the process.
 
Would there be any reasoning behind thinking that expelling the gasses into the air would somehow mess with the computer's ability to efficiently manage the vehicle? I'm going to take a look at doing something with an aluminum pipe along the lines of the PCV thing, only with the inlet and the outlet on the top (i'll run an internal tube to the bottom for the inlet)
 
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