Date:         Tue, 15 May 2001 08:52:27 EDT
Reply-To:     JKrevnov@aol.com
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Rico Sapolich <JKrevnov@aol.com>
Subject:      Re: Thermostats at Bus Depot
Comments: To: lamusicamellama@juno.com
Content-Type:  text/plain; charset="US-ASCII"

In a message dated 5/14/01 7:50:11 PM, lamusicamellama@juno.com writes:

<< I'm replacing the waterpump on my 84 westy. . . Any thoughts as to which I
should get?
 >>

Les,

Go with the one specified by VW, 87 C.  Don't be misled by the common
misconception that a T-stat rated at a lower temperature will prevent
overheating.  If the engine is overheating and the thermostat is good, the
source of the problem lies elsewhere.  The good people who designed the
engine do not live in a vacuum, so I am sure the considered all things when
they decided to use an 87 C. T-stat.  Anyway, I have a vague recollection of
studying thermodynamics back in the Dark Ages.  Other than the definition of
entropy and enthalpy, one thing I recall is that, although nonlinear, there
is a direct relationship between temperature differential and heat transfer;
the greater the temperature differential, the greater the rate of heat
transfer.

Rich