Ken is 99.9% right.

If one searches the archives for posts on cooling capacity by Frank
Grunthaner, there is a long post which discussed the cooling capacity of
the Vanagon system relative to the needs of the Vanagon engine.  It
gives calculations and formulas on how to evaluate this.  The system has
far more capacity than is needed for the engine.

However, the plastic and metal pipes make a very small contribution to
the calculation because their insides generate less friction for the
flowing coolant that do rubber hoses.  Repeat, very small.  The added
friction of all rubber hoses would not reduce the capacity that
significantly.  Also remember that rubber hoses are used for the heating
system.

Frank's post also explains in some detail why cooler is not better and
there are optimal temperature ranges for the operation of the engine.

Sam

--
Sam Walters
Baltimore, MD

89 Syncro GL, Zetec Inside
85 Westy Weekender
85 Mercedes Benz 300D Turbodiesel - to become veggie oil powered

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