How does air get blown in to the defroster-channel?

[SwedishTVR]

I am rebuilding a 1992 Griffith 430 which i bought partially disassembled.

Any of you that can help me to the answer from where air gets blown in to the defroster-channel at the bottom of the windshield?

I figured out the channel consists of two parts, one is the body along the lower edge of the windscreen, with the defroster outlets in it, the other part is the cover meeting up the body from the engine bay, where the hood-hinges and wiper-linkage is incorperated into….

But, i can’t figure out where the air gets pushed into the channel….

If anyone has a picture or good description, that would be very helpful!

Thanks!

[Adrian@]

My understanding is that on early cars use the whole of the inner wing to channel the air and the motor is sited under the passenger side headlamp (a cloth patchwork seals the motor to the shell). Everything that is satin black across/above the engine is the heater distribution box and needs to be sealed (even the rivets had silicone circles) then the footwells are bridged by a wyrem hose. Electric motors control heat and deflection up/down with an in-house matrix. Some cars run a cold air fan under the drivers headlamp (wired and switched from the column cowl). I think you are saying that there is internal part (I cannot say I have seen that when I have had the wiper system off cars). A@

Edited by Adrian@ on Tuesday 24th August 20:38

[MikeE]

As Adrian says the blower is under the passenger headlight. The air is blown through the wing and into the black heater box which is above the passengers knees/feet. Inside the black heater box there is a flap which is activated by a motor with a white plastic arm that you can see in the passenger footwell. This flap directs the air to either to the floor (a white tube exits the right hand side of the heater box and goes through the wind into the tube crossing the engine bay) or directs it upwards out of the top of the heater box directly into the windscreen vent channel.

The dash vents don't come via the heater box, they are fed by a flexible tube directly from the inner wing again above the passengers knees

[SwedishTVR]

Thanks Mike and Adrian for your replies. I think I got a better understanding now and will see if I can find all those loose parts in the boxes I got with the car

I searched for photos of the heating system of a Griffith, but have not found one that shows the system clearly enough.

again, thanks for your replies.