[200q20v] Audi 20V Turbo Crankcase Breather System Tuning, - some hel p found

[Steve Hackett]

I haven't investigated this too much but might this be a cure?
http://www.walkerairsep.com/how/

At 10:43 AM 11/1/00 +0200, you wrote:
>Hello  !
>
>THE BIGGEST PROBLEM IS THAT WITH HIGH
>BOOST THE CRANKCASE OIL/AIR MIXTURE FLOW GETS INTO THE
>INLET VALVES AND STICKS TO THE VALVE SURFACE
>AND AFTER LONGER HARD USE THE INLET VALVES ARE PROBABLY NOT
>94% TO 97% TIGHT ANY MORE !
>
>---> this means lower HP and higher fuel consumption !
>
>Breather Medicine seems to be allready quite close:
>http://www.martelbros.com/stefs/23.htm
>
>
>
> > -----Original Message-----
> > From: EXT Phil Rose [mailto:pjrose at frontiernet.net]
> > Sent: 31. October 2000 18:56
> > To: C1J1Miller at aol.com
> > Cc: tommy.arnberg at nokia.com; ouellette at snet.net;
> > birabrakes at egroups.com;
> > 200q20v at audifans.com
> > Subject: Re: [200q20v] Re: [birabrakes] Audi 20V Turbo Crankcase
> > Breather System Tuning, help neede d !
> >
> >
> > This sounds exactly like the "problem" I recently posted  on
> > the 200q20v
> > list. My Michelin Man hose quite suddenly has started collecting large
> > amounts of oil (well, OK teaspoons full) very soon after my ecu chip
> > upgrade was done. Totally dry before that.  I suspected the crankcase
> > breather as the source and thought it might be a defective pressure
> > regulator valve. Right now I'd say that my MM hose is acting as the
> > "settling tank", but obviously we'd all be much better off to have oil
> > condense before reaching the IC, MM or IM.
> >
> > In normal spirited street driving, the oil from my car that's
> > "lost" this
> > way appears to amount to no more than 1/2 qt in 2-3K miles. That upper
> > limit assumes none of the total drop in oil level is from from other
> > reasons (burning, etc). But in any case it makes a mess of
> > the MM hose and
> > I'd like find a fix, if possible. Perhaps there's room for a "settling
> > tank" to be fitted in the breather hose line near the
> > right/rear corner of
> > the engine just before the cranckcase pressure regulator
> > valve. In fact,
> > possibly the high-pressure washer bracket could be used to
> > secure it. Seems
> > all it would take is two short lengths of rubber hose, 4 clamps and an
> > appropriate container. But would it stay cool enough back
> > there to condense
> > most of the oil?
> >
> > Phil R.
> >
> >
> > At 9:24 AM -0500 10/31/00, C1J1Miller at aol.com wrote:
> > >In a message dated Tue, 31 Oct 2000  6:40:05 AM Eastern
> > Standard Time,
> > >tommy.arnberg at nokia.com writes:
> > >
> > ><<
> > >Hello !
> > >
> > >As you all know the breather system is closed
> > >and when boost is a little higher than stock,
> > >then the crankcase ventilation system in 3B
> > >engine (200 20V)  pushes the polluted oily air fume back
> > >to Turbo charger "mouth"
> > >
> > >- conceguences:
> > >    * fuel octane rating in mixture to be burned gets lower
> > >    *   Inter cooler cooling ability gets worse because of
> > oil-air fume
> > >     *  the inlet valves get burned oil build up (the worst of  all)
> > >     * air into engine gets warme
> > >===============
> > >The operation of the crankcase breather hose is explained in
> > detail on Scott
> > >Mockry's excellent (as always) pages, here:
> > >http://www.sjmautotechnik.com/20vboost.html#hose
> > >
> > >"This breather hose is routed around the back of the engine
> > and one end
> > >connects to the round black crankcase pressure
> > >     regulator valve near the back of the valve cover. This
> > black regulator
> > >valve, controls the flow of crankcase fumes to the turbo
> > >     intake boot. The valve has two ports inside, one is
> > approximately 0.400
> > >diameter and a smaller one that is approximately
> > >     0.180 inches. The larger port and the smaller port are
> > open during low
> > >boost operation but when the turbo makes enough
> > >     boost and flows enough air to produce a vacuum on the
> > suction side of
> > >the turbo, the regulator valve diaphragm sucks closed
> > >     and blocks off the larger port. This leaves only the
> > smaller port open
> > >to flow crankcase breather fumes. "
> > >
> > >There is more, including a diagram, but the basics are that
> > the breather is
> > >mostly closed off during higher boost conditions.
> > >======================
> > >
> > >
> > >The Gastank ventilation is operated with the
> > >"Blue valve" to inlet manifold. The piping has a
> > >valve that prevents back flow from inlet manifold during boost
> > >condition and during vacuum it sucks the air from crank case and
> > >through the blue valve from gas tank ventilation system.
> > >
> > >Has anyone disconnected / modified the stock system following
> > >way or better way ?  what is the right way.   (I know this is not
> > >legal but otherwise the engine gets older a lot faster !)
> > >
> > >[ Crank_breath.ppt ]
> > >
> > >If someone knows good  product that solves this problem,
> > >please mail www-pages and/or source for it !
> > >
> > >rgs,
> > >Tommy
> > > >>
> > >
> > >Looks to me like you want an oil collector system to limit
> > oily vapor from
> > >being combusted. I've seen other turbo cars install a
> > "settling tank" where
> > >the vapor can collect, condense, and later be drained...
> > >
> > >Tommy:  can you store that file somewhere that the 200q20v
> > owners can access
> > >it?
> > >
> > >On my car, with 5000 mile oil intervals, I burn very little
> > measurable oil;
> > >perhaps 1/2 quart at most?
> > >chris
> >