vipvegas

iTrader: (13)

Im trying to run a 4 port catch can system on my tc78 sts ls1 383. Here is the idea for the plan. I have 4 questions.

1.) Where I put the question mark do not know whether to go to TB or to where the stock pcv connected to the the intake under the TB

2.) Do I need to add a breather as all other ports on valve cover will be sealed. So only what you see is what Im using, Ill be capping off the rest.

3.) Will it work? or what changes need to be made..

4.) Do I need a check valve going to valley cover?


See Photo Below sorry for lame drawing skills..

vipvegas

iTrader: (13)

Thinking about not going with the ls6 vented valley cover also If I just delete out that line and plug whole at catch can will it work also?

parish8

iTrader: (6)

i prefer no pcv at all. just a vent. sucks getting oil in the turbo/intercooler/intake duct/combustion chamber. i tried the catch can route and it did catch some oil but let plenty threw too.

but to answer your question. i wouldn't use the port on the tb at all, just plug it.

then come off of one or both valve covers if you want into the catch can. then catch can to turbo inlet.

depending on the size of your tubing, fittings, catch can and how much boost you want to run. you might want to put in a breather.

vipvegas

iTrader: (13)

running 1/2 hose throughout. Max boost ever will be 15-16 psi.

So just cap fitting at TB and where the stock PCV went into intake

parish8

iTrader: (6)

yes, and you wont need any check valves. that is how i have done it in the past.

looking at your plan with the check valves might work well. under vacume it would pull the vapors into the engine. under boost into the turbo. hmmm.

or just say screw it all and run a 1/2 line from your valve cover down near the ground, just to keep any vapors from making a mess under the hood.

i see it is warm where you live. here the catch can will fill up with water quickly in the colder weather.

TurboAv

iTrader: (6)

That's not very "green" of you, lol. Wouldn't that put **** on the track?

parish8

iTrader: (6)

only if your engine is worn out. on our fairmont and wagon and now on my g8 all we have is a small filter and not one of them even gets damp with oil.

if your talking some kind of emisions then yeah, not very green.

my truck with a built 408 and 20psi did saturate the filter and made a mess after awhile.

vipvegas

iTrader: (13)

I do like how I have the pcv running back to intake to. Like you said with check valves in correct place it will work will in boost or not and supply perfect vacuum. At least I think thats the way I planned it. In the works of getting the valley cover thats vented cant do anything but help. When I had stock sts with there pcv I was getting minimal blowby and blowing off valve cover gaskets and oil cap. So now that im rebuilding I figured this would be a good addition.

parish8

iTrader: (6)

i saw your post on check valves there are some here to check out >> http://www.mcmaster.com/#check-valves/=3elrcl

something to think about is i got some rated at 1lb cracking pressure. i guess 1lb is a lot. i couldn't blow threw it either way.

parish8

iTrader: (6)

i saw your post on check valves there are some here to check out >> http://www.mcmaster.com/#check-valves/=3elrcl

something to think about is i got some rated at 1lb cracking pressure. i guess 1lb is a lot. i couldn't blow threw it either way.

vipvegas

iTrader: (13)

heres what I got a little expensive but nice they have a 1/3 pound cracking and hold 3000psi cost 50 for 2 though. But they accept 1/2npt. It will work.

Spade

iTrader: (26)

With my procharged setup I run breathers on both valve covers and a catch can off the ls6 valley cover. I do not have any line going to my procharger because of all that crap gettin in there.