rod, thanks a bunch
--- In BC-BFLegacyWorks@y..., "Rod" <melrod@o...> wrote:
> Mike,
> i used a mini version of the oil foam uni-filter.
> I got it from a auto parts store that sold uni filters. (On the
Subaru when
> a 'pod' style filter is used, two filters are rerquired, one as
main air
> filter and the other for the hose coming off the engine-bay
resonatorbox
> after the airfilter going to the 'bypass air control valve -for cold
> starting. I would say any type foam similar to this will do the
job.)
> Just used a cable tie to hold it on.
> The 'box' you refer to, is it the one i described above or is it
the actual
> filter box itself?
> I am asuming it's the not the filter box. There is a small hose
going to
> the resonator box from the solenoid, this can go anywhere, though
you must
> keep the actual oem hose fitted, as it has a restrictor in it so the
> solenoid
> works properly. The only other hose connected is the one from
the 'bypass
> air control valve, described above, this would need a filter as it
draws air
> in.
> cheers, Rod...in Oz.
>
> ----- Original Message -----
> From: "mike p." <ob1poor@y...>
> To: <BC-BFLegacyWorks@y...>
> Sent: Thursday, August 09, 2001 6:38 AM
> Subject: [BC-BFLegacyWorks] Re: ? box between intake and turbo
>
>
> > --- In BC-BFLegacyWorks@y..., "mike p." <ob1poor@y...> wrote:
> > > can anyone give me any ideas as how to make a filter or what
kind
> > to
> > > buy for the hoses? also, i want to take the "box" completely
out
> > but was concerned with the pressure sensor hoses. if i disconect
the
> > sensor hoses(the two smaller hoses on the box, one underneath
towards
> > the filter side and the other in the front, that run to the
pressure
> > sensor) and just let them open to the engine compartment am i
going
> > to have problems with the pressure sensor or anything?
> > >
> > > --- In BC-BFLegacyWorks@y..., daniel.wilson@d... wrote:
> > > > Rod have you got a better picture of that so I can OCR it?
> > > >
> > > > Dan
> > > >
> > > > --- In BC-BFLegacyWorks@y..., "Rod" <melrod@o...> wrote:
> > > > > Hi group,
> > > > > Purpose of this : to stop oily, blow-by gases getting into
the
> > > air
> > > > inlet. (digrams attached) -[updated since last time..}
> > > > >
> > > > > General Description:
> > > > > At part or nil throttle, the blow-by gas in the crankcase is
> > > drawn
> > > > > into the inlet manifold through the connecting hoses and PCV
> > > valve
> > > > by
> > > > > strong vacuum in the inlet manifold (strong vacuum opens the
> > PCV
> > > > > valve). Under these conditions, fresh air is introduced into
> > both
> > > > the
> > > > > rocker covers via the air inlet duct and connecting hoses.
The
> > > > > crankcase (blow-by)gases, mixed with the fresh air, are
drawn
> > > > through
> > > > > the hoses, PCV valve and into the inlet manifold.
> > > > > At open throttle, under turbo boost, positive pressure is
> > > created
> > > > in
> > > > > the inlet MANIFOLD ,ie. the inlet MANIFOLD has no vacuum and
> > > hence
> > > > > the PCV valve is shut.
> > > > > Under these conditions the system works in reverse. Blow-
by
> > > gases
> > > > are
> > > > > drawn into the air intake duct via the rocker cover hoses
and
> > > hose
> > > > > off the crankcase, prior to the PCV valve (shown in diagram
> > > below).
> > > > > During these conditions, the inlet air being fed is not
100%
> > > fresh
> > > > > air but a mixture of fresh air and blow-by gases. This also
> > > leaves
> > > > an
> > > > > oily film, over time, in the inlet ducting, turbo and
> > intercooler.
> > > > > 100% fresh air would be a better alternative.
> > > > > Mods:.....
> > > > > 1. The hoses from the both the rocker covers come together
as
> > > one
> > > > and
> > > > > lead to the air inlet duct. (see 'A' in dia). I have
pulled
> > > this
> > > > hose out and plugged
> > > > > the hole in the air inlet duct. On the end of the pulled
out
> > > hose,
> > > > I
> > > > > have fitted an oil foamed filter, a mini version of a uni-
> > fliter
> > > if
> > > > > you like. Now the system can draw fresh air into the rocker
> > > covers
> > > > > whenever required but will not allow blow-by gases to be
drawn
> > > into
> > > > > the air inlet duct. It now 'breathes'. This is similar to
the
> > > pre-
> > > > > emission days when engines used to 'breathe' through the
rocker
> > > > cover
> > > > > oil filler cap.
> > > > > 2. There is another hose that links from the air inlet
duct,
> > to
> > > > the
> > > > > crankcase hose and PCV valve. (see 'B' in diagram) I have
> > plugged
> > > > the
> > > > > section leading from the air inlet duct. This now allows
> > > crankcase
> > > > > vapours to be drawn in the inlet MANIFOLD via the PCV valve
but
> > > > stops
> > > > > the crankcase vapours being drawn into the air inlet
DUCTING.
> > > This
> > > > is
> > > > > now 'one-way' if you like.
> > > > > Realize though, that this is not legal under emission
control
> > > > laws but the
> > > > > only thing that can be visually seen is the tiny foam air
> > filter.
> > > > Can be put back to std in 'blink of the eye', or could be
hidden
> > > with
> > > > a bit of imagination.
> > > > > This should also make a difference to the airflow meter
> > readings -
> > >
> > > > it now has the exact
> > > > > amount of air entering the engine, as is couldn't know what
was
> > > > being drawn in through the blow-by hoses.
> > > > > I also removed the air ducting / intercooler and cleaned the
> > oily
> > > > > film off everything and it is still spotless. I have been
> > running
> > > > > like this now for quite a while.
> > > > > Regards, Rod
> > > > >
> > > > >
> > > > > Emission control Mods
> >
> >
> >
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> >
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> >
> >
> >
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> >
> >
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