so CA's are blowby machines

[bentvalves]

right, but if the catch can isnt vented with a hole or a filter, or vented via a hose pre-turbo , you need to reconsider a 100% "sealed" -breather- system.

[rossmac]

I ran the crank breather to an SR20 oil separator and I have so little blowby that makes it up to the head now that I just have it left open to the atmosphere, but you could also connect both sides together and run them to a vented can if you'd like too.

so youve left the downward pointing pipe on the intake camcover open?
& the big one that come from next to the oil filter youve just run to an oil seperator then to a catch tank?

[Ca_Silvia]

right, but if the catch can isnt vented with a hole or a filter, or vented via a hose pre-turbo , you need to reconsider a 100% "sealed" -breather- system.

I can see how what i said before was mis leading. My exhaust side catch can is vented with a hose pre turbo. It is not vened to atmosphere directly via a filter. What i meant is it is 100% plumbed through the motor as i still use a turbo inlet pipe similar to the stock one.

I could simply just take a picture but my car is all torn apart right now

[bentvalves]

well that clears things up then : )