I was thinking of making my own breather tank, (7"x4") and running both lines to one tank. Will this be good enough? It would have one breather filter on it. I was also thinking of making the bottom drain back into one of my turbo return lines. Anyone have any thoughts on this??

Also, does anyone make something to convert a regular breather hole, on the valve cover, to accept a -12 hose? I have some really nice billet valve covers from Speed Inc., and dont want to weld on them.

Thanks - Ron

Anyone?????:)

Ron

does anyone ever wonder why there is so much preasure? this seems to indicate 2 problems. 1 being ring seal (ie) blow-by. And second . with proper baffling there shouildn't be much oil getting in the breathers . if there is that much oil i would start to wonder why it isn't draining back, or is there just too much oil getting up top. i can see some preasure biulding up under extreme situations such as turbo or nos motors. but even then it's stiil a cylinder sealing issue. under normal driving conditions crankcase preasure should be minimal. i'm not trying to be a wise guy ,but i would try to solve the problem rather than put a band-aid on it.

From my understanding, when forced induction is used, there will be some blow by. Im not trying to cover up a problem, Im trying to advoid one. I havent built the motor yet. Im in the mock up stages. I just dont want to have oil vapor/oil on my valve covers. I would rather have something to catch the oil (if there is any) and return it to the engine, instead of having to clean oil off my billet valve covers every week.

Ron

I think your breather design would work, but it seems like overkill. If you put proper baffles on your valve covers, the only think coming out of the covers will be a little vapor. If you condense this, you'd only get a few drops. Is this a race type setup that doesn't allow ordinary breathers? That's what I run and there is no condensation at all on my covers, and no visible vapor at all.

This is a street set-up. I have seen people with open filters that drip oil after running it hard. I dont like the idea of oil on my valve covers or smoking because it driped on my headers. Right now I have Billet "closed" type breathers. Im not sure they will vent as well as I need. I like the "race" type look that the custom beather tank will provide. Will one "open" breather be good enouhg to vent all the gases ok? Also I thouhgt it would be nice to have the tank drain back to the oil pan. I was going to put a "T" between the oil pan and the turbo oil return line. Will I need a one way valve in the line between the breather tank and tee? Also, what can I use in the vave covers to run the lines to the tank? I dont want to weld on my valve covers, so I want something that will either bolt to them (in the original holes) or push in the rubber gromet.

Thanks - Ron

What are closed type breathers? Isn't that an oxymoron? :)

Is the turbo return line an unpressurized gravity line? If so, you could probably tee into it. One breather should be plenty. If the turbo line is pressurized, teeing into it might cause oil to fill up into your vapor tank. You'd need a check valve in the tank line in this case.

Do you have baffles under the covers to prevent direct splashing of oil onto the bottom of the breathers? Here's a picture of mine. With this setup, there is no dripping of oil, no matter how long you drive.
http://temp.corvetteforum.net/c3/zma...lve_baffle.jpg
http://temp.corvetteforum.net/c3/zma...ve_baffle2.jpg


If you still want a catch tank, using a rubber grommet, you can run a setup something like this. No need to weld on the covers. Use an PCV valve connector to fit into the rubber grommet, and connect it to your tubing. I know this guy has a breather setup, but you can see the right angle connectors from the valve covers as an example.
http://images.cardomain.com/member_i...93_92_full.jpg