ArmyINFDoc Posted February 18, 2007 Report Share Posted February 18, 2007 line 11 is what i was referring too.that picture is just one set up. the other way is that line 11 runs to the side of the intake manifold by the ps pump. Link to comment Share on other sites More sharing options...
turbobrick Posted February 18, 2007 Report Share Posted February 18, 2007 what its run in to is irrelevant as long as its connected before the intake.it would work just the same connected directly to the intake manifold. Link to comment Share on other sites More sharing options...
MoJo Posted February 18, 2007 Report Share Posted February 18, 2007 Here's what I don't understand; I'm thinking the check valve goes to line #7 (in the previous picture). I can only see how there's a vaccuum in this line, the turbo would be drawing air through this line, out of the case, eventiually into the CC. Putting a check valve here would allow air through but not back to the case (but in my mind thiswould never present itself). As well, there's oil building up in this line eventually clogging the fitting... I'm just trying to see how this would work.....unless the fitting goes on the vaccuum line, but then the case would not be vented under boost...It's not making sense to me... ellaborate? Link to comment Share on other sites More sharing options...
SteveO Posted February 18, 2007 Report Share Posted February 18, 2007 The thing here is the volvo pcv vents into the intake pre-turbo so it is always under vacumn,never pressurized. If it vented into the TB then it would need a check valve to prevent the positve presure from going into the head and crankcase. I don't think this is not an issue for us. Link to comment Share on other sites More sharing options...
MoJo Posted February 18, 2007 Report Share Posted February 18, 2007 The thing here is the volvo pcv vents into the intake pre-turbo so it is always under vacumn,never pressurized. If it vented into the TB then it would need a check valve to prevent the positve presure from going into the head and crankcase. I don't think this is not an issue for us.My thoughts exactly... I would like to see a solution that could completely rid the intake of oil vapors... A catch can would do it, but somehow there needs to be vaccuum for the PCV to function properly... Link to comment Share on other sites More sharing options...
Denovae Posted February 18, 2007 Author Report Share Posted February 18, 2007 My thoughts exactly... I would like to see a solution that could completely rid the intake of oil vapors... A catch can would do it, but somehow there needs to be vaccuum for the PCV to function properly...so you guys only have a PCV and not a breather and PCV? that's odd as hell. Link to comment Share on other sites More sharing options...
MoJo Posted February 18, 2007 Report Share Posted February 18, 2007 Yesss....This was an easy solution for my SR20, but a bit more complicated on the 850...There's a catch can under the intake manifold that kind of swirls around the mixture collecting the oil at the bottom to return to the sump, while allowing the pressure to travel to the turbo. There's an electronic (guessing just to monitor function) PCV valve in the intake just before the turbo that's on the other side of the line, that also needs a vaccuum source to function, otherwise it just allows the pressure to build venting naturally (but not sufficient for the engine). maybe a picture of my engine could help?From top to bottom:TOP END BREATHINGTO TURBO INTAKEPRESSURE FROM BLOCKOIL RETURN TO SUMP Link to comment Share on other sites More sharing options...
turbobrick Posted February 19, 2007 Report Share Posted February 19, 2007 no pictures needed, just dont do it ! Link to comment Share on other sites More sharing options...
MoJo Posted February 19, 2007 Report Share Posted February 19, 2007 no pictures needed, just dont do it !Exactly... as it is now, mine is just new stock parts, stock configuration... Link to comment Share on other sites More sharing options...
fromtheshadows Posted February 19, 2007 Report Share Posted February 19, 2007 The PCV system on our cars is a very well engineered design. Link to comment Share on other sites More sharing options...
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