This could be a good reason to go with a catch can

[TURBOPOWERED68]

Time to add catch can.
For the home made catch cans, what are you using inside of the can to catch the oil?
Btw the turbo is completely dry

 

[1KWIKSIX]

Don't just throw a plain old can on there....install a catch can that was specifically designed for the purpose & has the correct internals to work properly. There are several different makes that do the job quite well.

If you do a search you'll find lots more information posted by many members.


http://www.turbobuick.com/forums/threads/pcv-catch-can.323565/

http://www.turbobuick.com/forums/threads/pcv-catch-can.406929/#post-3348707

http://www.turbobuick.com/forums/threads/installed-an-oil-catch-can-today.392886/

http://www.turbobuick.com/forums/threads/catch-cans.405738/#post-3332369

Here's what I used: AMW catch can.
http://www.accmachtech.com/catchcans.asp

I purchased mine from Haney Motorsports
http://www.haneymotorsport.com/HMS PCV Oil Separator Catch Can.htm

 

[TURBOPOWERED68]

Don't just throw a plain old can on there....install a catch can that was specifically designed for the purpose & has the correct internals to work properly. There are several different makes that do the job quite well.

If you do a search you'll find lots more information posted by many members.


http://www.turbobuick.com/forums/threads/pcv-catch-can.323565/

http://www.turbobuick.com/forums/threads/pcv-catch-can.406929/#post-3348707

http://www.turbobuick.com/forums/threads/installed-an-oil-catch-can-today.392886/

http://www.turbobuick.com/forums/threads/catch-cans.405738/#post-3332369

Here's what I used: AMW catch can.
http://www.accmachtech.com/catchcans.asp


View attachment 220353

thanks for the reply, I am just trying to be as cheap as possible and use my home made contraption and some how make it work.
lots of good stuff on them links Thanks

 

[kidglok]

Dave clean out the intake and run the car without a pcv for a while. Then check the manifold again. If you still have oil then a catch can isn't going to solve it.

Another possibility is your pcv valve is allowing too much vacuum to be pulled. I use two inline and melted the tip smaller (plastic) now I have no issues

 

[RmvBfrFlght]

Time to add catch can.
For the home made catch cans, what are you using inside of the can to catch the oil?
Btw the turbo is completely dry

What I did is a little different, but may be helpful. Used a soup can as a PCV line separator, not really a catch can (which needs to be emptied from time to time). A separator allows the oil to drain back into the crankcase. The crankcase pressure enters the bottom of the can, and exits the top to go on to the plenum (vacuum).

In the bottom of the can is a mesh cone, point up, shallow, and full can diameter on the bottom. On top of that is about an inch to inch-and a half of stainless steel pot scrubbys. On top of that is another shallow mesh cone, just to hold the srubbys in place.

With the large diameter the air slows way down and the oil drops out. Be sure to paint it flat or satin black... Otherwise it won't work right

RemoveBeforeFlight

 

[hensleyt]

CorkSport this is for turbo cars and works good
Not cheep

 

[TURBOPOWERED68]

What I did is a little different, but may be helpful. Used a soup can as a PCV line separator, not really a catch can (which needs to be emptied from time to time). A separator allows the oil to drain back into the crankcase. The crankcase pressure enters the bottom of the can, and exits the top to go on to the plenum (vacuum).

In the bottom of the can is a mesh cone, point up, shallow, and full can diameter on the bottom. On top of that is about an inch to inch-and a half of stainless steel pot scrubbys. On top of that is another shallow mesh cone, just to hold the srubbys in place.

With the large diameter the air slows way down and the oil drops out. Be sure to paint it flat or satin black... Otherwise it won't work right

RemoveBeforeFlight

I am planning on doing something like that using a 1.5 PVC pipe. I like the PVC because you screw the barb fitting right on to it

 

[captndave737]

I have the same setup as 1KWICKSIX except my mounting bracket is behind the radiator.

Originally I had the little cheapo ones from Jegs that look like and probably are compressor air water separators.
View attachment 220464 It worked fine on the PVC side but they are so small the oil had to be drained alot. They were too restrictive on the valve cover side and blew the dipstick out.

 

[Pronto]

There's a bunch of diy on you tube and other car forums. Most look sucky and/or will not be easy to empty. If you can find an aluminum jar that screws together (I searched all over the place no luck) that would simplify the fabrication. Aluminum water bottles are promising but not easy to empty. The one I used it very simple to mount and empty. It does collect oil that would otherwise end up in the throttle body.

 

[David Husek]

Time to add catch can.
For the home made catch cans, what are you using inside of the can to catch the oil?
Btw the turbo is completely dry

Dave, most of the problem is the PCV valves available today allow way too much vacuum than the original part. More boost will get past the rings than your PCV valve, so that is not an issue. Quick check. Run the engine and pinch the PCV line, if the engine stumbles or stalls, your running off the crankcase at idle. This is a problem overlooked with available parts and catch cans wont be needed if you get a properly working PCV system. I am working on a fix. I have used a Honda valve and machined it to fit on one engine, it works well, but it is too expensive to repeat. Stop by, I will be making something new for the car I took you for a ride in yesterday.

 

[TURBOPOWERED68]

my home made contraption seems to work a little too good
Pulled about half of a cup or more of oil from the catch can
Going to try and figure out an auto drain back system.

 

[captndave737]

That oil is contaminated. I wouldn't want to put it back in the crankcase.

 

[TURBOPOWERED68]

That oil is contaminated. I wouldn't want to put it back in the crankcase.

With?

 

[Pronto]

Alky and gasoline and water.

 

[earlbrown]

Just like the oil in the crankcase?

 

[bison]

my home made contraption seems to work a little too good
Pulled about half of a cup or more of oil from the catch can
Going to try and figure out an auto drain back system.

Restrict the vacuum to a .050" orifice


Sent from my iPhone using Tapatalk

 

[Pronto]

That's pretty small. Is that volume of air all that is needed for the pcv?

 

[bison]

That's pretty small. Is that volume of air all that is needed for the pcv?

Back long long ago when I ran a PCV and total seal rings they put it right in the instructions to restrict it. The stock PCV calibration isn't going to work on a fresh engine with a plate honed round bore and fresh rings. I'm quite sure GM engineers spent many hours and miles analyzing crankcase flow before they just popped any old PCV valve on the engine. By restricting you are still allowing some function


Sent from my iPhone using Tapatalk

 

[dvernst]

Dave clean out the intake and run the car without a pcv for a while. Then check the manifold again. If you still have oil then a catch can isn't going to solve it.

Another possibility is your pcv valve is allowing too much vacuum to be pulled. I use two inline and melted the tip smaller (plastic) now I have no issues

If you're going to run no pcv then you need to make sure both valve covers are vented as much as possible. The larger the openings the less velocity to carry oil out with the pressure. I run this setup with no pcv, and occasionally get a smell of oil at idle, but otherwise have no negative affects. Initially I was getting some oil splashing on the valve covers, but switched to 20w-50, and this corrected the problem. I plugged the pcv hole in the intake with a wonder plug which is usually used as a band aid for a stripped out oil drain plug hole

 

[BEATAV8]

I prefer an open crankcase. No PCV.

The only drawback is if the smell finds its way into the cabin of the car