Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

How do I defunctionalize the PCV system?


  • Please log in to reply
4 replies to this topic

#1 Phaedras

Phaedras

    Eat, Live, Breath Subaru

  • Members
  • 305 posts
  • Somerville

Posted 21 April 2005 - 12:23 PM

I've heard this and that about valve cover breathers and dissasembling the PCV system. I notice that I get massive amounts of oil into my intake from the crankcase, somehow traveling all the way up into the main intake hose and literally dribbling in both the direction of my MAF and throttle body. I kid you not, this stuff becomes a river sometimes.

Now, can I just plug the hole in the intake hose and attach one of those miniature air filters onto the valve cover? Or is there other work required?

Is there possibly even a way of retaining the system and just finding some oil seperation device that can be spliced in between?

#2 erik litchy

erik litchy

    Leadfoot

  • Members
  • 1,090 posts
  • Peoria IL

Posted 21 April 2005 - 12:26 PM

maybe your engine was shot like mine. a good healthy engine makes very little blow by. after i rebuilt my jeeps engine the diffrence was huge.

#3 MorganM

MorganM

    Do you Subaru?

  • Members
  • 8,390 posts
  • TwinCities

Posted 21 April 2005 - 12:33 PM

Here's how I routed mine due to blow by.

Vent tubes on each rocker cover -> hoses -> T fitting -> single hose out of T fitting to breather/filter. Tucked the breahter down low where air drafts over it.

Removed PCV valve from intake manifold and replaced with properly sized and thread pitch bolt from my spare Subaru bolt box. Plugged extra holes in main SPFI snorkel with more spare bolts and tightend the seal with clamps. All hoses are fited with screw down clamps.

You could also setup a water/oil seperater canister in line and leave it all hooked up like it should be. However you'll be emptying that canister often! :lol:

#4 Phaedras

Phaedras

    Eat, Live, Breath Subaru

  • Members
  • 305 posts
  • Somerville

Posted 21 April 2005 - 12:44 PM

Any possibility of attaching a small filter to the PCV hole in the intake? Or directly onto the valve cover hole?

#5 Snowman

Snowman

    Midnight Passenger

  • Members
  • 3,538 posts
  • Haines

Posted 21 April 2005 - 01:46 PM

The PCV system is there for a reason. It evacuates crankcase gases. I removed the PCV setup from an EA82 I used to have, and it started leaking oil profusely due to the lack of vacuum in the crankcase (the vacuum helps control oil leaks).

I am still perfecting a self-maintaining oil separator that I should have for sale this summer. You should also replace your PCV valve with a new OEM one. Aftermarket valves just don't work as well.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users