Date: 13 Jul 2001
U can make a modification so that instead of the oil getting blown and/or sucked into the air box, it gets blown down into a bottle.
Put a hose coming out of the pcv thing on an downward angle. Put a t-connection on it at the end of this hose. Have a bottle facing downward from the bottom of the t-connection (with a hose if thats what it needs), and the other outlet of the T (the one going horizontal) with a hose going to the air filter box UPWARD (since you have already gone down from that other slant). I did this for the short time i could drive my 931, gave it a good run around town so the oil would get blown, and whatdoya know, the bottle collected the oil!
Basically if you have a hose on an upward slant in the end going UP to the air filter box, the oil finds it easier to not go up that way, and when it comes to the t-intersection, the easiest place for it to go is DOWN into the bottle rather than up the slope into the air filter box (graivity!). Without the upward slant on the hose, and without the downward slant, using just a t-connection, it doesn't work as well, because the easiest dircetion for the oil to go is right across and it won't be forced into the bottle.
Having the two slopes in the system makes the oil go on a little ski trip. Which is easier? to stop on your skis in teh middle of a run and climb up the mountain to another level, or to just continue skiing down the run that you already have momentum on?