Thanks Mark, can you get me a photo of the bottom too?

It sounds like air for the rear doesn't really enter the depth of the box-
it just comes in through the intake in front and is immediately bled off to
the rear- is that correct?

We could would be to include the feed the rear side ducting off the
heat/fresh/a/c output at the rear of the proposed replacement box, and reuse
the bottom lever so you can control how much goes back and how much stays in
the front. If the airflow is adequate, this would really be great for people
wanting to an improved unit to do an initial a/c install. I do wonder why VW
did not do something like this at the outset.

I have to admit that I don't know how a regular car airconditioning system
works. Do the heat exchanger and a/c evaporator more or less share common
space, so that first you either heat or cool (or do nothing) to the incoming
air, and then route it to defrost and vent areas?

Of course, the really easy solution would be to find a place for the
evaporator in the existing box. That intake area looks huge..can you imagine
fitting an evaporator in there somehow?

Thanks

Tom

-----Original Message-----
From: mark drillock [mailto:drillock@earthlink.net]
Sent: Wednesday, January 29, 2003 7:48 PM
To: Forhan, Thomas
Subject: Re: Heater Box Photos

There is another set of vents not visible in those photos. These are
very large and face down just below the intake vents. These supply only
fresh air to the rear ceiling vents I think and are controlled by the
bottom of the 4 dash levers. When the box is set in place it seals the
body intake vent openings with rubber as well as the body opening for
the large rear fresh air output I just described.

Mark

"fourwdvw " wrote:
>
> Those are great, mark.
>
> I edited them to idenfify the purpose of the various vents, to the
> best of my knowlege. They are posted in an seperate album in the
> photos section of the yahoo syncro group. If you wanna have a look
> and see if I misidenfied anything, please do.
>
> Thanks
>
> Tom