Get rid of the PCV or not??
Get rid of the PCV or not?? Ok, I have been reading almost all day on placing breathers on the valve covers to get rid of the oil issues of the LS1 but havent seen any F.I. guys doing this. So my question is.... Is it going to be beneficial to get rid of the PCV or not on my turbo set up? Im sick and tired of the current set up from STS sprinkling my exhaust and engine bay with oil 
I had the same issue with mine. Since I am replacing the motor, I decided to run the oil return to the nipple on the pass. side valve cover, which used to be for the pcv. I put a breather on that valve cover, and another one on the drivers side. Now, I don't know if this is gonna work, but I figured it was worth a try. Hope that helps.
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With proper design you can keep the P.C.V. system which is what I did. The only reason I can think of to delete it would be because it's easier. The benefits to having a P.C.V. system are less oil contamination because the blow-by gases are evacuated + you will eliminate the nasty smell that you will get if you just let that **** vent to the engine bay. Also there is power to be gained if you can provide vacuum to the crankcase under boost.
What about like our old drag cars, using a crankcase evacuation system tied into the headers, manifolds? The higher the rpm, the more "vacuum" you get pulling the gases out as you create more boost. Much cheaper than a vacuum pump too! I've been seriously considernig this alternative on my setup, I'm running a valve cover breather, and have done NOTHING with my PCV, what do you all think?
Originally Posted by 67Firebird455
What about like our old drag cars, using a crankcase evacuation system tied into the headers, manifolds? The higher the rpm, the more "vacuum" you get pulling the gases out as you create more boost. Much cheaper than a vacuum pump too! I've been seriously considernig this alternative on my setup, I'm running a valve cover breather, and have done NOTHING with my PCV, what do you all think?
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True, didn't think of that... I'm not running any.
Guess you could insert at a 45º after the cats. You'd only need to have one hooked up for it to operate properly, assuming it's close to stock displacement.
Guess you could insert at a 45º after the cats. You'd only need to have one hooked up for it to operate properly, assuming it's close to stock displacement.
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It's hard to do a PCV system on a STS because the Turbo is in the back which you need the inlet to evac. boost pressure from the crankcase. We ussually just do a catch can with lines coming from both valve cover's.Stop's the oil from blowing out the dipstick.
So I put breathers on my valve covers and deleted the PCV. Then I ran the STS return ine into the old PCV inlet on the passengers side valve cover. Now I got tons of smoke crap that smells like oil and fuel mix coming from the breathers. Not bad when Im driving but when I stop it looks like my engine is on fire with the smke coming out of it. If that wasnt enough I know have oil spraying out the breathers while in boost 
WTF??? Please help 
WTF??? Please help
Originally Posted by Lrry93
So I put breathers on my valve covers and deleted the PCV. Then I ran the STS return ine into the old PCV inlet on the passengers side valve cover. Now I got tons of smoke crap that smells like oil and fuel mix coming from the breathers. Not bad when Im driving but when I stop it looks like my engine is on fire with the smke coming out of it. If that wasnt enough I know have oil spraying out the breathers while in boost WTF??? Please help
WTF??? Please help 
Originally Posted by 2001WS6Vert
Also there is power to be gained if you can provide vacuum to the crankcase under boost.
Originally Posted by RealQuick
Under boost, there is no vacuum. The vacuum would only be at part throttle (very little load). Correct me if I am wrong. I dont see why having it is important for "power gains".
Originally Posted by Slowhawk
If you have a line to the air filter setup then there will be vacuum under boost
and thats how i plan on running my setup