[DeTomaso] Pantera cockpit ventilation

[MikeLDrew at aol.com]

In a message dated 1/7/15 2 05 52, guson at home.se writes:


> The fresh air intake dissapeared much earlier. My car was built in July 
> 71 and does not have it. My Euro spare parts catalog lists 1st series (with 
> fresh air) to car 1285, 2nd series (also with fresh air) from car 1286 and 
> 3rd series (no fresh air) from car 1910. My car is #2004.
> 
>>>That sounds about right.   The Ford parts book doesn't show the first 
series at all; instead it lists the parts from 1286 to 1910 without the field 
fix (no fresh air), and that same setup with the field fix ('before 1910').  
 Then there's a drawing of the parts from 1910 on, with two different 
heater boxes shown.   One is for the early-style dash, and the other is for the 
later-style dash.   

If you look at the subsequent listing of parts in the Ford parts book 
though, there are numerous part numbers for the associated systems which don't 
appear on any of the drawings!   The relevant general part number is 18552, 
and there are four parts under that heading.   It's all very confusing....

> The original fresh air intake was only partway thought through. The air 
enters the pressurized heater box, that is on the pressure side of the heater 
fans. This means that when the car is stationary no fresh air enters the 
car. Actually, if you roll down a window the fan will blow air from the cabin 
out through the wiper grilles. The system Mike describes below ducts fresh 
air to one of the fan cages which makes it work kind of like on most modern 
cars. One drawback that I found with that system is that if you drive with 
the heater fan turned off, ambient air will blow through the fan housing to 
the drivers side footwell. This may or may not be pleasant depending on 
ambient air temperature.

>>>However, you can close off air entering from the outside with this later 
system.   Moving the lever opens the 'box' to accept air only from inside 
the cabin of the car, which would make the heater much more effective in cold 
weather.   It would probably help A/C function as well, but in moderate 
temps it's probably preferable to get fresh air, just for the sake of getting 
fresh air....

Mike
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   In a message dated 1/7/15 2 05 52, guson at home.se writes:

     The fresh air intake dissapeared much earlier. My car was built in
     July 71 and does not have it. My Euro spare parts catalog lists 1st
     series (with fresh air) to car 1285, 2nd series (also with fresh
     air) from car 1286 and 3rd series (no fresh air) from car 1910. My
     car is #2004.

   >>>That sounds about right.  The Ford parts book doesn't show the first
   series at all; instead it lists the parts from 1286 to 1910 without the
   field fix (no fresh air), and that same setup with the field fix
   ('before 1910').  Then there's a drawing of the parts from 1910 on,
   with two different heater boxes shown.  One is for the early-style
   dash, and the other is for the later-style dash.
   If you look at the subsequent listing of parts in the Ford parts book
   though, there are numerous part numbers for the associated systems
   which don't appear on any of the drawings!  The relevant general part
   number is 18552, and there are four parts under that heading.  It's all
   very confusing....
   > The original fresh air intake was only partway thought through. The
   air enters the pressurized heater box, that is on the pressure side of
   the heater fans. This means that when the car is stationary no fresh
   air enters the car. Actually, if you roll down a window the fan will
   blow air from the cabin out through the wiper grilles. The system Mike
   describes below ducts fresh air to one of the fan cages which makes it
   work kind of like on most modern cars. One drawback that I found with
   that system is that if you drive with the heater fan turned off,
   ambient air will blow through the fan housing to the drivers side
   footwell. This may or may not be pleasant depending on ambient air
   temperature.
   >>>However, you can close off air entering from the outside with this
   later system.  Moving the lever opens the 'box' to accept air only from
   inside the cabin of the car, which would make the heater much more
   effective in cold weather.  It would probably help A/C function as
   well, but in moderate temps it's probably preferable to get fresh air,
   just for the sake of getting fresh air....
   Mike