The vapor is mostly oil that is full of contaminants, such as water or gasoline, which have a lower "flash point" (boiling temperature). Oil vapor will collect in corners and turn to sludge. The most important reason for having a crankcase ventilation system is for air to circulate through the crankcase and pull oil vapor out. Obviously not to emissions compliant, but I was under the impression that you want to keep your crankcase under a slight vacuum when under low loads, venting to atmosphere would not allow this. Might as well start one here since it really would apply to all Subies. I Started this same thread on Legacy Central but aren't getting any immediate responses due to small amount of BC owners. So he then brought another one which had one inlet port and a place to drill another since it was made from urethane, the problem being is that it was a vented unit.Īfter bringing it home I decided to do a little more research and discovered that it probably wasn't the best unit to install due to it creating more blow-by and probably not emissions friendly.ĭon't be afraid to post some pics of your own set-ups :!: Turns out he was originally looking at a coolant overflow with a single inlet up top and re-circ port on the bottom. At the local performance parts store they found me a cheap Moroso catch can for $40, he said it was a sealed type so I headed on down there to pick it up. So I figured I would just find 2 CC's locally and be done with it. Especially with the PVC system on the EJ22T being somewhat complicated. During my internet research and part searching I discovered that finding a cheap decent set-up was definitely a challenge. So after seeing some of the sludge through the intake during my TMIC install I decided that a Oil Catch Can was in order. So lets just lay out the options and decide which is "best" for you :smt045
What is the best Catch Can / Oil Seperator set-up :?: ( Especially for the Turbo models due to excess blow-by)Ģ: 2 separate Catch cans ( 1 for the VC's, 1 for the PVC system )ģ: An actual Oil Separator ( Returns oil to crankcase )Īnd when I say "best", option 3 is probably, but is also the most expensive.