REFLECTOR:M-20 Oil/Air separator

[KeithHallsten]

That's pretty elegant!  Since the breather line will prevent significant
pressure differences across the trap, the the oil in the trap shouldn't have
a tendancy to blow out.  However, the oil in a small-tube trap should add
just a little bit of resistance in the return line and keep the gasses from
coming UP that line.  Just a neat little 360-dregree loop in a piece of
aluminum tubing should make a neat little trap.


----- Original Message ----- 
From: "Larry Colley" <larry@grrok.com>
To: <reflector@tvbf.org>
Sent: Saturday, April 03, 2004 9:40 AM
Subject: Re: REFLECTOR:M-20 Oil/Air separator


> Instead of adding parts, why not form a trap in the return line.  This
will
> insure one way flow with about zero weight/complexity increase.
>
>
> At 09:15 AM 4/3/04 -0700, you wrote:
> >The PCV valve is put in the oil return line, backwards.  Positive
pressure
> >closes the line during operation. When you shut down the engine the
> >reclaimed oil then drains back through the PCV valve into the crankcase.
> >
> >When the return line is open during engine ops it can cause a flow
problem
> >in the separator that causes a greater amount of oil to be blown over
board.
> >
> >Scott
> >
> >At 08:30 AM 4/3/2004, you wrote:
> >>Keith,
> >>How does a PCV in the return line prevent oil loss through the
> >>breather?  My breather hose is connected to an aluminum box, is that the
> >>separator?  Mine has a drain plug and I am considering installing a tiny
> >>return line that will drain after the engine is off, but hopefully not
> >>during operation.
> >>John
> >>
> >>KeithHallsten wrote:
> >>
> >> >  John, The proposal is to put the PCV valve in the return line from
> >> > the separator to the engine.  There is no way that such an
> >> > installation could pressurize the crankcase!  The breather tube is
> >> > still the breather tube. Keith
> >>
> >>
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