[MiraclePieCo]

Originally Posted by joedoh

there have been a few complaints of overheating with those shroud/electric fan combos because the air is obstructed as it tries to go through the efan opening. looking at it logically, where does the air that flows through the fins in the corners of the rads have to go?

that type of efan already has a "shroud", really a duct for efficiency. you can take the extra aluminum shroud off and mount the efan directly to your rad with some of the ties for rads that go through the fins, that alone would probably give you the spacing you need.

BINGO! A stock radiator core measures roughly 21"x19" or 420 sq in. A shroud opening for an average 16" fan measures a mere 200 sq in. When you use a shroud you are now trying to force 400"+ through a 200" opening - essentially blocking off half your radiator. That equals RESTRICTION. My cars have all cooled best without a shroud.