The area behind the grille is a high pressure area when the car is moving.
Connecting the intake to this area will take advantage of both the pressure and
the
lower temperature of the air. We are not talking about alot of pressure but a
little
pressure sure beats a vacuum. It has been alot of years since I did the testing
but
if I remember correctly with my ram air system with the filter out front and a
3.5"
hose, I measured 3 or 4 inches of water column pressure at the rear of the air
box
at 60 mph at full throttle at 5000+ rpm.
Since the entire area behind the grille is pressurized I would not expect much
advantage from a funnel turned forward. The location of the filter, front or
back,
should not make a difference either. What will make a difference is the amount
of
restriction created by the size of the filter and diameter of the hose. Hoses
connected to the two little fittings on the front of the early filter housing
will
be way too small to move enough air for a high performance engine.
About blocking the radiator and overheating? Unless you have something flat in
front
of the radiator it will not be a problem. That pressurized air will flow right
around the filter and through the core.
Richard Good
Don Malling wrote:
> Hi Richard,
>
> I have often wondered about this.
>
> I thought the objective of connecting the carb air supply to the
> radiator cowl was to create a ram induction affect -- turbo sort of.
>
> If that is true, wouldn't it increase the ram affect to keep the air
> filter back at the carbs rather than out front at the radiator cowl? It
> would seem that air filter out front would decrease the ram affect. It
> would seem that even at the radiator cowl, you would want to mount some
> kind of funnel shape.
>
> Always wondered but was afraid to ask...
>
> Don Malling
>
> Richard Seaton wrote:
> >
> > 6 Pack,
> >
> > While considering relocating the air filter up past the radiator shroud, I
> > got to considering rain will pass the grille and soak the filter.
> >
> > Hopefully this will be few and far between. What have others done when
> > relocating the filter to this location and is it unnecessary to worry about
>it
> > getting wet?
> > The filter getting water logged isn't good, right.(?) Should I fabricate a
> > shield for the front of it, and what about the shield limiting airflow?
>Just a
> > note,Richard Good's has a shield.
> >
> > Maybe I should think about something else, but it's too cold to work on
>the
> > car.
> >
> > Richard Seaton
> > RSH17@msn.com
> > View My restoration @ (http://groups.msn.com/Richards69TR6Restoration)
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