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Old 05-07-2008, 09:04 PM   #17 (permalink)
Saving Those Greenbacks
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Join Date: Apr 2008
Location: UTA
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Snowy - '02 Ford Ranger XL
90 day: 23.29 mpg (US)
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Originally Posted by aerohead View Post
An SAE paper I looked at this morning ( its old an from Fiat) had results from wind tunnel studies for scale models.Their take on airdams was that for a clean-bottomed vehicle an airdam could actually increase drag.For a dirty-bottomed vehicle they would probably help.Since the Ranger has a torture-chamber for an underside,my guess is that the airdam is for you.CAR and DRIVER's Pinto and Z-car projects both saw mpg improvements with airdams.They are an industry standard now for passenger cars. Corvette and Firebird Trans AM run very deep airdams,however,they are "bottom-breathers" with no grilles,and take in all their air from below the bumper.Try to get as much air around the Ranger as you can.
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