Date: Fri, 22 May 1998 09:37:12 -0700
Reply-To: Don Hundt <mtsupply@OUTLAWNET.COM>
Sender: Vanagon Mailing List <Vanagon@vanagon.com>
From: Don Hundt <mtsupply@OUTLAWNET.COM>
Subject: Re: Why does engine run cooler w/ heater, The real reason
Content-Type: text/plain; charset=us-ascii
Not trying to be argumentative, but......
the previous answers were 100% correct, they just didn't mention the
thermostat. It doesn't matter where you take the coolant from, the head, the
the block, heck, tap into the radiator itself, you are still increasing the
size of the cooling system when you allow coolant into the heater core.
Taking it before the thermostat, as you noted, only serves to provide heat
more quickly.
kenneth d lewis wrote:
> Those answers are only partially correct. The real reason the temperature
> is lowered is because the cabin heaters are before the thermostat. The
> external radiator can only dissipate heat passed by the thermostat where
> the internal radiators pull coolant from the heads and send it to the
> intake of the water pump regardless of the thermostat state(i.e. open or
> closed). This is helpfully in defrosting the windshield soon after the
> engine is started. Otherwise you would have to wait until the temperature
> gauge was registering in the middle before the thermostat opened and
> there was heat available.
> -----Original Message-----
> From: Kevin J. Turinsky <turinsky@JUNO.COM>
> To: Vanagon@VANAGON.COM <Vanagon@VANAGON.COM>
> Date: Thursday, May 21, 1998 14:50
> Subject: Why does engine run cooler w/ heater on full-blast?
>
> >Hi Volks:
> >
> >We've been having a great time zooming around with the Syncro up here in
> >South Central Alaska.
> >
> >However, I've notice that I can get the coolant temp. needle to drop
> >about a needle's width by cranking the heat to FULL. The needle will
> drop
> >even a little further if I turn both fans on full. Why is this? Anyone
> >have any ideas? I've never heard this topic come up on the List before.
> I
> >like having a cool engine, but I getting roasted in the Westfalia! :-)
> >
> >TIA
> >
> >Kevin...turinsky@juno.com
> >"Anchored, down in Anchorage---Alaska"
> >61:10:42 North
> >149:11:11 West
> >Elevation: 101 feet
> >
> Drive Safely & Good Luck
> Ken Lewis<K-ville,NC> Temporarily internetless
> 86 VW Transporter Double Cab Pickup
> 60 Porsche T-5 Coupe
> 85 VW GL Vanagon<Elvis>
>
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