I was thinking of just this the other day.  thinking back to a post a while
back trying to come up with alternative heating schemes in AC vans.  I
think there would be adequate heat in there to make a difference in the
van.  Especially if the heater boxes were insulated.  I was thinking there
would be an issue with the water/coolant boiling too easily.  So then you
need a way to dump the excess heat out when you don't need it in the
van.  Then you have a radiator to cool your exhaust system?  so maybe you
empty the system when it is not needed?  How about using the fact that it
will boil the water to your advantage, like in a steam heat system in a
house?

Edward

At 09:22 PM 2/4/2007, you wrote:
>Hi all.
>
>BION (believe it or not) I have an actual Vanagon question.
>
>On a 2L AC engine. An idea that's been on my mind.
>
>How crazy is this:
>
>Open up heater boxes,
>
>wind 3/8" or 1/2" soft copper pipe around each exhaust pipe,
>
>assemble/install boxes, (plug hot air outlets)
>
>connect copper coils to create a circuit
>
>install pump, heater core, etc.,
>
>run coolant through to provide interior heat?
>
>Other parts would include an expansion tank, fan etc. Likely the
>biggest cost would be the pump.
>
>Hard to answer, but would there be enough heated coolant present in
>system to provide any appreciable amount of heat?
>
>Purely hypothetical, though i do have 2 spare heater boxes.......
>
>Likely someone has tried this before, but I am curious.
>
>
>
>Pax,
>
>
>
>--
>Neil Nicholson. 1981 Air Cooled Westfalia.
>
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>
>New Video!
>
>Dash board removal:
>
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