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AutoBahned
Join Date: Jul 2007
Location: Greater Metropolitan Nimrod, Orygun
Posts: 55,993
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Here ya go, Dave...
from Ludvigson, EXCELLENCE WAS EXPECTED, 1st ed., Ch. 16
On the 1963 911, the cooling fan took only 4.7% of the 901's gross engine output - p. 402
-- a LOT less in other words
too many gears & shafts with frictional losses in the horizontal fan I guess
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