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Old 01-30-2012, 11:11 AM   #15 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,534

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 57.73 mpg (US)
Thanks: 4,082
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Quote:
Originally Posted by fujioko View Post
Feel free to use any picture you want.
Great - added a few pics and links to your YouTube vids in post #1.

What an impressive build - congratulations.

As for the goal of better highway economy, have you compared the Miata's CdA (drag coefficient x projected frontal area) with the Metro's? Aero losses outweigh everything else above ~25-30 mph.

FYI, the default values in the aero/rolling resistance calculator here are for a Metro of the same specs as your engine donor: Aerodynamic & rolling resistance, power & MPG calculator - EcoModder.com

I saw you mention the hard top option as a potential aero gain. If you're talking about the tapered aftermarket "fastback" hard top I've seen in pics of some racing Miatas, it will likely help. The OEM hard top, probably not so much.
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Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
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