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Old 01-03-2020, 04:54 PM   #54 (permalink)
ptjones
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Join Date: Dec 2012
Location: Newnan, GA
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The wheel covers are a challenge to attach to the wheels. I machined aluminum plugs with 1/4x20 threaded hole in center to go on the inside of the wheels and glued them in with silicon rubber . Then used 1 3/4" 1/4"x 20 thread machine screwed into plug through 1/4" fender washer, 3/16" x 18 1/4" LEXAN Plastic cover and 1/2" Nylon bushing. Also put Nylon 1/4" x 20- 1 1/2" screw about 1 1/2" from edge through LEXAN to keep cover from spinning. Link https://fordcmaxhybridforum.com/topi...ge/4/#comments about halfway down the page.

I gained 2 mpg from adding wheel covers and rear wheel well cover.
Paul
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