Normal ,, Well,,, expectable ,,,,Well.
So it seems in most Blown applications and even too a lesser degree in non-blown motors as well.

 

I believe your on the right track, we have been playing around with them as well.
We just have to remember not to constrict the passage way and the rest is well,, sometimes just trail and error.
There is in most applications I have used, little if any vapors getting past most of the good Separators out there.
Some say a minute amount of air born oil may be a good thing for S/C rotors,,,I am still out on that one,

Foot note:
Some one way check Valves are spring loaded and or p.s.i rated. So check the amount of draw you have and try to come up with a close balance....

 

It seems a good catch can would be one that effectively separates oil/oil mist from the tract and offers very low/no restriction to air flow?
who makes a quality piece?

 

That's about what I need for mine.

 

The weight of the trailor you would need to carry those will make you a easy traget for,,,,,,,even my truck..

 

Loaded question there, There are only a few out there that work well without further modifications.



I like,,,well,,, mine (But of course) I followed fairly closely one of the others, with what we like too consider some minor improvements (Larger I.D. on the fittings for one).
Which seams too be working real well, time will tell.
There is a couple others out there that look like they could work well and admittedly at a better price at that ,,however I haven't got a hold of one yet too test.

 

looks like a nice piece Dbl G

here are some pics I found, no idea how effective these designs are though

 

On the passenger side, for now, I have it plumbed directly from the valve cover to the plastic intake... exactly how Magnuson wants it. I will change this side once I figure the best/cheapest vacuum regulator I can put in parallel with the second Krank Vent valve that I removed due to too much crank case vacuum while driving under manifold vacuum conditions. You may need to experiment as your boost levels will certainly be higher than mine.

On the driver side... you got it... just how I have it pictured earlier in the thread...

Now, with the drive side plumbed with the Catch Can / Krank Vent (one-way) and the passenger side plumbed straight from the plastic intake to the valve cover this setup will work good... for me... for now. But part of the reason why I started this thread was to share my experience in trying to come up with a good crank case vacuum under normal driving conditions... AND maintain it as long as possible under boost conditions. My understanding that having the capability to effectively evacuate the crank case while under boost conditions when blow-by is taking place helps. Can I quantify that? No, I cannot. Right now I am experimenting, as have alot of C5 vette guys have, that have been dealing with GENIII based crank case oil misting issues for 10 years. PM Quicksilver2002 on the other forum and ask him his experience in dealing with this. He has done quite a bit of homework and has come up with a setup that works well for him and he is pushing boost levels you will be approaching but has a Procharger. Another dynamic or monkeywrench to throw into this "equation" is that the more boost you throw at a GENIII/IV motor (any motor really) the bigger the need is to manage positive crank case pressure. I intend the setup I'm working on to work for a max of 7-8 psi on my current 5.3 motor. As I said earlier you will need to experiment more as your boost levels will most certainly be far higher than mine. Alot of C5 guys are just putting a valve cover breather on and calling it a day. It works for positive crank case conditions but is messy. And if you choose a valve cover breather it should be on there if you choose to use a catch can on the drivers side when the tuner gets ahold of the truck because of the unmetered air (not passing through the MAF) will enter the crank case from the passenger side... this assuming you will stay with a MAF based tune. If you are going SD via a 2 BAR MAP then I would only be guessing...

Bill

 

why did you choose to put the catch can on the drivers side vs the passenger side?

 

Here's a nice one... -12AN



Bill