Ive got differing trains of thought when running a catch tank.
Id have preferred a closed circuit to a v2a setup.
The closed circuit system is drawing the crank fumes out via the turbo causing a vacuum in the crank case. Drawing out everything it can. I did an oil change last week after 6 months at about 140 miles pw. 3500ish miles?
The oil that came out was very clean. So i believe the system works very well. No condensation residue on the filler cap, not a jot.
Its the constant draining that does my head in.
Im not a lazy person but its always on my mind about the water/funk level in the can and concerned about it being drawn through into the turbo.
Vent to atmosphere im not convinced with to be honest.
The fumes are having to make their way to the catch tank under its own pressure (not drawn up by the turbo) so moving at a lower speed. At best or worst IM GUESSING the moisture vapours moving at a lower speed through the pipes have more chance of making contact with the inside of the pipes (gravity) and turning back into water droplets and running back down into the crank case. Ala water in the oil = condensation.
The standard pcv set up imo is the way to go. Its black magic to me at the moment and want to have a read up on how it works and what it does with the moisture and funk.
Just my Sunday morning ramblings lol
Rich
Id have preferred a closed circuit to a v2a setup.
The closed circuit system is drawing the crank fumes out via the turbo causing a vacuum in the crank case. Drawing out everything it can. I did an oil change last week after 6 months at about 140 miles pw. 3500ish miles?
The oil that came out was very clean. So i believe the system works very well. No condensation residue on the filler cap, not a jot.
Its the constant draining that does my head in.
Im not a lazy person but its always on my mind about the water/funk level in the can and concerned about it being drawn through into the turbo.
Vent to atmosphere im not convinced with to be honest.
The fumes are having to make their way to the catch tank under its own pressure (not drawn up by the turbo) so moving at a lower speed. At best or worst IM GUESSING the moisture vapours moving at a lower speed through the pipes have more chance of making contact with the inside of the pipes (gravity) and turning back into water droplets and running back down into the crank case. Ala water in the oil = condensation.
The standard pcv set up imo is the way to go. Its black magic to me at the moment and want to have a read up on how it works and what it does with the moisture and funk.
Just my Sunday morning ramblings lol
Rich
. I’m still sure the Oe set up is better some how but it’s 6 of 1 half a dozen of another. I’ve never heard of anyone’s catch can set up causing problems significant enough to damage an engine. I did see you can get a replacement pcv system on eBay for about £30 complete. I’ll see how my oil fares over the summer then look at it again. If it goes bang I’ll write a decent report and we will finally have concrete evidence 
