Quote:
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Originally Posted by resago
A little math.
K&N
round filter
outside diameter - 11.25in
Height - 4.25in
cone filter
outside diameter - 6in
Length - 8in
circumference is D*Pi
outside area is circumference * height
area of stock filter is 11.25*3.14*4.25 = 150.1 in sq
area of cone filter is 6*3.14*8 = 150.7 in sq
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Your neglecting the thickness and number of pleats.
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green 85 300SD 200K miles "Das Schlepper Frog" With a OM603 TBO360 turbo ( To be intercooled someday
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white 79 300SD 200K'ish miles "Farfegnugen" (RIP - cracked crank)
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