PCV system question
Thread Starter
Safety Car
Joined: Nov 2002
Posts: 4,394
Likes: 6
From: Melbourne FL
PCV system question
I have a catch can installed and wondering if there's a reason I can't install a "T" in one of those lines for the catch can and then connect the passenger side valve cover to the "T"?
Thanks
Thanks
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
My 99 has the hose that runs from the drivers side valve cover behind the intake to the passengers side, then both go through the PCV valve and into the intake. If you try to rig it up that way so that the direction of vacuum stays the same, you should be fine.
Le Mans Master
Joined: Sep 2002
Posts: 6,569
Likes: 2,405
From: Redacted
I think theres some confusion as to how the PCV system works....
The line running from the passenger side valve cover to the intake is simply and inlet for fresh air to promote circulation/air flow through the crank case. (If you dont believe me, fire up your motor, and disconnect the rubber tube from the passenger side valve cover and stick your finger on the end and have someone rev the engine, little to no "vacuum")
The line from the valley cover to the intake is where the air/pressure is vented and thus the oil into your intake.
There are a few different way to incorporate a catch can into the system....I chose to use a breather cap on the passenger side valve cover to allow fresh air into the crank case (no significant oil seepage after a year of daily driving and a few track events) and a catch can that has a breather cap on it with no line to the intake. This way the entire system is vented to the atmosphere. I found that even with the catch can, with the crank case line going back to the intake, I was still getting oily residue in my intake, despite the oil accumulation in the catch can.
Short story long, yes you could incorporate a "T" into the line, but theres no real reason to.
The line running from the passenger side valve cover to the intake is simply and inlet for fresh air to promote circulation/air flow through the crank case. (If you dont believe me, fire up your motor, and disconnect the rubber tube from the passenger side valve cover and stick your finger on the end and have someone rev the engine, little to no "vacuum")
The line from the valley cover to the intake is where the air/pressure is vented and thus the oil into your intake.
There are a few different way to incorporate a catch can into the system....I chose to use a breather cap on the passenger side valve cover to allow fresh air into the crank case (no significant oil seepage after a year of daily driving and a few track events) and a catch can that has a breather cap on it with no line to the intake. This way the entire system is vented to the atmosphere. I found that even with the catch can, with the crank case line going back to the intake, I was still getting oily residue in my intake, despite the oil accumulation in the catch can.
Short story long, yes you could incorporate a "T" into the line, but theres no real reason to.
Safety Car
Joined: Jul 2005
Posts: 3,572
Likes: 9
From: Jackson Tn
St. Jude Donor '06-'07-'08-'09
this is an old thread but it has some good info to read
http://ls1tech.com/forums/generation...outing-ok.html
http://ls1tech.com/forums/generation...outing-ok.html
Thread Starter
Safety Car
Joined: Nov 2002
Posts: 4,394
Likes: 6
From: Melbourne FL
this is an old thread but it has some good info to read
http://ls1tech.com/forums/generation...outing-ok.html
http://ls1tech.com/forums/generation...outing-ok.html
