Re: fitting oil catch tank to a classic impreza
[quote author=markobucko link=topic=12724.msg155791#msg155791 date=1234463426]
why not vent the rocker covers to the can also???
[/quote]
Would probably need a second catch can for that, as I think there is some issue with teeing all three lines together.
I found a good thread on scoobynet where Andy Forrest and Bob Rawle talk about catch can set ups.
http://bbs.scoobynet.com/drivetrain-11/138077-catch-cans-pcv-systems-do-we-need-them.html?showfull=1
From what I understand you will want the rocker covers to be able to intake fresh clean air to ventilate the crankcase.
Going to tackle this myself soon, just have to sort out a few other things first.
My plan is to have...
crankcase to inlet via PCV (as normal),
crankcase to catch can - catch can to air via filter (rather than just crankcase to intake),
rocker covers to second catch can - catch can to intake,
or,
install a one way valve on the rocker cover line that will allow them to breath fresh filtered intake air but not allow oil into the intake............... if that makes sence! :lol:
Fair play for doing the write up Mark C!