Radiator Cap

[Jim Davies]

On Tue, 14 Oct 1997, Tom Cloud wrote:

> 
> my problem is not with the cfm rating of the thermostat but rather
> with the claim of (aluminum) radiator manufacturers that slower flowing
> water transfers more heat out of the engine.

my experience is that OPTIMUM flowrates are most efficient, and this is
usually achieved (in cars) with a stock type thermostat installed. A look
at medium trucks, which share basic engines with larger cars shows a much
larger rad with (sometimes) two 'stats in parallel for the extra flow.
Consider the average load on the two types of engines to understand the
whys...

Jim Davies