GTkllr

Bought my car like this, noticed it wasn't how the stock ls1 Pcv is. Wondering if this is behind the reason I notice the oil get dark pretty fast after I change it. Line from the TB goes to the passenger side valve cover. The line coming from the intake manifold goes all the way to the back of the valve cover on the drivers side with a PCV valve clamped to the end of the line and into the cover.

LS1121

iTrader: (17)

Just reverse the two on the throttle body.

GTkllr

But there is only one line from the TB?

LS1121

iTrader: (17)

there are 2 hoses in your picture just switch them.

LS1121

iTrader: (17)

here is a picture of mine.
The PCV goes to the intake and the throttle body connects to the valve cover.

jrpimp00

iTrader: (17)

OP, yours is the correct routing as you have it now. Dont swap them.

GTkllr

LS1121, the way you're telling me to do it would be the opposite of what you have.. But jrpimp00 thanks for clearing it up. So this setup is correct? I though the stock PCV had the valve somewhere by the TB?

kingtal0n

iTrader: (1)

You want the crankcase to be able to do three things
1. breath through the air filter of the engine, so that is can never be excessively pressurized or vacuumed (no large deviations from atmospheric pressure)
2. evacuate through the pcv valve, into the intake manifold, during cruise/vacuum situations for scavenging of crankcase gasses and preferentially creating a sight vacuum inside the crankcase (to help keep from pressurizing the oil seals -> which causes oil leaks)


3. hmm well I guess its just those two things! I cant think of a third. Anyways! off you go now!

LS1121

iTrader: (17)

yes I know, I'm just posting a pic for the op to look at.