02-11-2008, 05:37 PM
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#7 (permalink)
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Batman Junior
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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The advantage of using a grille block is the rad fan can still pull air through the radiator if it needs to. But it can't when there's a piece of cardboard on the other side. Grille block = better. Also, you're not getting any significant aero benefit by blocking just the rad.
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