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Old 07-24-2013, 09:14 PM   #28 (permalink)
EcoModding Lurker
Join Date: Dec 2012
Location: Rhode Island
Posts: 34

Work Van - '89 Chevrolet Astro
90 day: 28.43 mpg (US)

240D - '83 mercedes 240D
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Originally Posted by elhigh View Post
I think you could go to full moon wheel covers. A lot of guys have done that here and gotten great results. Or just whip out some coroplast and fab up something quick-n-dirty, it doesn't have to be gorgeous just to prove whether it helps. (NOTE: I don't think anyone has ever come back to say it had a negative effect).

The chin spoiler, ideally, should be as low as the lowest projection on the van's underside. There are proponents here who say a full belly pan almost eliminates the need for an airdam, and a good airdam almost eliminates the need for a bellypan. Almost. With so many other things on the vehicle non-negotiable, I think if the bellypan and airdam combine for better results, go for it. Besides, looking under there you can see it's an aerodynamic hell. You almost can't make it worse.

Rear fender skirts shouldn't be a problem at all.
I agree, I don't see how doing both could hurt in any way, especially with the other tradeoffs
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