PCV valves/Catch cans

[SS/GN]

What is everyone using for a PCV valve or valve system.I had an ATR valve inline of the stock PCV and found it did not work well at idle.Breathers seemed to mist a little.I am looking at a change,maybe the RJC piece.Any thoughts?


Kevin

 

[toofastforyou]

Kevin, I'm not using any pcv. I have two braided hoses coming out of each valve cover leading to some breathers mounted on top of two Moroso oil catch cans. The cans are mounted on each side in the engine compartment...Never had a single leak with them...

Claude.

 

[TR Custom Parts]

I'm about ready to eliminate the PCV on mine. Running the catch can I used to sell and also a check valve, can't believe how much oil collects in that thing! You just know some of it is still making it to the intake manifold. Going to try a suggestion from Bison on restricting the line a bit and see what that does,

 

[tonysmach]

Mark, when you find something that works well, add it to your product list. I know I could use something better than the breathers on my stock valve covers.

 

[TR Custom Parts]

Mark, when you find something that works well, add it to your product list. I know I could use something better than the breathers on my stock valve covers.

The catch cans definetly worked but they didn't sell real well so dropped them.

 

[TurboTnZ06]

I have the little air compressor catch cans (you can buy them at home depot) on my cars with a PCV, they definitely catch oil during daily driving. Trouble is having to empty them out all the time. I also had to test a few PCVs until I got one that didn't let air by under boost. The ATR valve is junk- I had one.

 

[jlat]

I have the little air compressor catch cans (you can buy them at home depot) on my cars with a PCV, they definitely catch oil during daily driving. Trouble is having to empty them out all the time. I also had to test a few PCVs until I got one that didn't let air by under boost. The ATR valve is junk- I had one.

hello people; Do you mean the RJC valve is junk?
IBBY

 

[SS/GN]

I'm about ready to eliminate the PCV on mine. Running the catch can I used to sell and also a check valve, can't believe how much oil collects in that thing! You just know some of it is still making it to the intake manifold. Going to try a suggestion from Bison on restricting the line a bit and see what that does,

Mark what valve are you using and do you care to elaborate on the restrictor?Thanks

Kevin

 

[1KWIKSIX]

PCV & Passenger Valve Cover Catch Cans

Hi Kevin,

Here's a picture of the dual catch can set up that I've been running for a couple of years now. Am real happy how they are working. Am finding only a very little amount of oil in the PCV can and empty it every 1,000km or so. (There's a drain caulk valve on the underside so you don't have to remove, simply place a small dixie cup under and let er drain...takes just a few seconds to do and is very easy). Had to make up a bracket to mount them both on passenger side inner fender..on the flat spot just beside battery box.

Not finding any oil in the valve cover can.

In addition to my PCV Valve (using Auto Zone's 1162 PCV Valve, per Eric Marshall / Bob Bailey's recommendations) in conjunction with a 1/4" Stainless Steel Check Valve with 1/4" x 3/8" barbed inserts to prevent pressurizing the can on the PCV set up.

There's more information and pics posted in August 2010. Use the search button "PCV Catch Cans" for pics and more details.


Best Wishes of the Season.

dave

 

[jlat]

hello people; Davpar your setup looks nice and clean but I came on for something else. I see your from Canada. I also go to MC site and there's a guy who goes but the screen name (crazycandian) who shows he's from Lajord. Is that close to you? I don't know much about your area. If it is and you have some thing special to be done for you car he might be the man for that. He's a car,MC, machinist, engineer. He made a 128" shovel all his head design and that says alot.
any interest I'll be the middle man for now.
IBBY

 

[toofastforyou]

Here's my setup...

1° hose from the right side valve cover going to...
2° ...this breather/oil catch can
3° hose from the left side breather going to...
4°...this breather/oil catch can...

Hope this helps!

Claude. :wink:

 

[GNVYUS 1]

I'm using the stock PCV and a US Plastic Check Valve, these check valves are great and dirt cheap. I had a Kirban Check Valve and had crazy smoke all of 2010 with major oil contamination until I switched over.

If you don't use a PCV you'll need to change your oil very often, I was about every 500 miles due to the Kirban Check Valve locking up.

I don't see the benefit to putting catch cans right off the valve covers without an aid in crankcase relief from a vacuum draw. Otherwise you're pretty much just catching oil being pushed from normal crankcase pressure which breathers are ok for.

Using the turbo as the vacuum draw and putting the catch can in between that setup is a good start, similar to how every turbo car was engineered to aid crankcase pressure.

 

[TurboBuRick]

Oil consumption through the pcv circuit has nothing to do with the check valve. Oil is ingested when in vacuum and pcv check valve is open. Really no different than it not being there at all. The only way a check could aid in oil consumption is if the check is restricting air flow when in vacuum.

When they go bad, they hang open. Thats it.

The catch cans off the valve covers does catch oil that would otherwise drip out the breather onto the motor/exhaust. That is the main goal. The pcv takes care of the crank case gases when in vacuum so no need to pull vacuum on the canisters unless you want the gases to be ingested during boost. Ideally on a emission controlled vehicle, that would be the way to go but for performance, I'll pass.

My o2 FWIW

 

[TurboBuRick]

I'm about ready to eliminate the PCV on mine. Running the catch can I used to sell and also a check valve, can't believe how much oil collects in that thing! You just know some of it is still making it to the intake manifold. Going to try a suggestion from Bison on restricting the line a bit and see what that does,

Don't eliminate it Mark, thats not a good for the oil. It will contaminate quickly.

Restricting the flow on the pcv circuit will help with consumption. I did this on mine and now the only thing in the pcv catch is a little bit of milky stuff.

 

[GNVYUS 1]

I didn't read anyone using a catch can off the PCV, but that will work too if you have that much pressure. And another small reason the turbo was a part of the crankcase pressure loop.

The cover catch cans alone are an expensive band aid, if you're seeing oil coming out the breathers you have other issues, most likely needing the Us Plastic Check Valve I mentioned earlier. If it's from massive Blow By then you can still benefit more from the original design of using the Turbo to aid in suction with the cans in between that.

Didn't see the price on just the cover catch cans, but using the turbo to aid in evacuation would actually make some power, it's been proven by David Buschur on a WRX.

 

[TurboBuRick]

I can't see how recirculating crank case gases can make more power.

 

[GNVYUS 1]

This isn't anything new. Go to any Big Block Turbo/Supercharger board and see what they do. It's way beyond the 1" the Turbo draws that I'm recommending.

Local around here made over 50whp with his twin turbo vette by using a BIGGER vacuum pump, that's over what he made vs the smaller one.

Don't take my word for it, look it up, David Buschur of Buschur Racing, Dyno, WRX. I believe it was 6awhp even after he took it off, did another run, then put it back on to make sure it was a true reading.

Engineers don't take time and $$ to design useless things. Well, most of the time.

 

[Chuck Leeper]

Lots of info at: Chevy | Camaro | Firebird Reviews, Performance Parts, Modifications - LS1Tech.com, on this topic.

 

[TurboBuRick]

This isn't anything new. Go to any Big Block Turbo/Supercharger board and see what they do. It's way beyond the 1" the Turbo draws that I'm recommending.

Local around here made over 50whp with his twin turbo vette by using a BIGGER vacuum pump, that's over what he made vs the smaller one.

Don't take my word for it, look it up, David Buschur of Buschur Racing, Dyno, WRX. I believe it was 6awhp even after he took it off, did another run, then put it back on to make sure it was a true reading.

Engineers don't take time and $$ to design useless things. Well, most of the time.

Now your talking vacuum pumps? Ya, ok. Now that make some sense. Accept for one thing.

Vacuum pumps don't recirculate the crank case gases back into the intake. Do they?

It's the extra vacuum in the crank case (not recirculated emissions) thats making the extra power.

 

[87 national]

anyone using this catch can?

Silver Oil Catch Reservoir Tank Grand National Regal - eBay (item 150445086399 end time Jan-12-11 18:33:57 PST)