Date: Fri, 23 Apr 2004 21:34:01 -0500
Reply-To: Stan Wilder <wilden1-1@SBCGLOBAL.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Stan Wilder <wilden1-1@SBCGLOBAL.NET>
Subject: Re: Extra Vanagon Cooling
Content-Type: text/plain; charset="iso-8859-1"
I've got a full sheet cover over the coil that catches air on the frontside
and allows it to pass through or upward through the coils. The coil is
spaced below the belly pan about 3/8".
I hit on this because it seems all but the newest Porsche have very poor air
conditioning.
Almost every Porsche except the newest models have these added in Texas.
I think it relates to the 5800 rpm redline on the tach and even over 6500 on
some Porsche models.
Looking at my drive pulley on the crank it's only about 3" diameter while
the compressor drive pulley is 5.5" diameter. That tells me that the
compressor is always turning slow compared to engine speed.
Most Air Cooled Vanagons and 72-79 Busses use about the same pulley ratio.
On the 72-79 Vans I've seen a full six square feet of condenser coil under
the bus to get the required cooling.
At any rate its a cheap fix and it's been working for me
.................... until I run down a large cat and damage the coil.
Stan
----- Original Message -----
From: "Gerald Masar" <azsun99@EARTHLINK.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, April 23, 2004 9:08 PM
Subject: Re: Extra Vanagon Cooling
> The extra condenser under the van is exactly what they did when they
converted my '90
> Westy, way back when, 1998 I think. And it is what was recommended by the
"experts"
> then. Mine even has a fan mounted above it, that comes on whenever the
compressor
> runs. They put a protective cover over it made of expanded metal grid. I
thought that
> would not be enough, so I added a sheet of perforated aluminum, which I
have since
> removed. Never had any damage from rocks either way, but I usually avoid
most gravel
> roads. Does it help? Not really. Probably something else wrong with my
system,
> including a slow leak. Time to top it up.
> Jerry in Arizona
>
>
> ----- Original Message -----
> From: "John Rodgers" <jh_rodgers@BELLSOUTH.NET>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Friday, April 23, 2004 2:37 PM
> Subject: Re: Extra Vanagon Cooling
>
>
> > First question!!
> >
> > What about rock and road hazard damage??? That looks like a really
> > vulnerable spot!! But I like the concept!!
> >
> > John Rodgers
> > 88 GL Driver
> >
> > Stan Wilder wrote:
> >
> > >For those of you that are constantly mulling over fixing your A/C or
convertting it
> to R134-a this might be a simple solution to get your interior temps down.
> > >This added coil brings my 912e A/C temps down to 34 degrees out all the
underdash
> ports once the system starts getting a good supply of air passing over the
extra coil
> under the car.
> > >Once the air flow brings the system temp down it pretty much continues
to work even
> in traffic with little or no air flow for short time frames.
> > >http://www.engineceramics.com/vw/undercoil.jpg
> > >My system still uses the little 5.5 cui Mini-York compressor and the
R134a
> refrigerant.
> > >It works just great.
> > >
> > >Stan Wilder
> > >
> > >
> > >
| 
