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Old 11-28-2007, 03:07 PM   #5 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.8 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)
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Originally Posted by 95metro
They were lighter, maybe even more underpowered, but were the gears identical? Maybe look at putting the old Firefly tranny in the blackfly? I thought I read somewhere that there were some slight transmission variations besides final drive.
Lighter, less rotating mass (12 in wheels & tires); also the pre-86 cars EPA ratings were higher, even though they used the same test method (they introduced a "fudge factor" and changed the ratings even though the cars didn't change).

As for the gear ratios, everything I've learned about those trannies, I learned at TeamSwift. If I recall rightly, all the 3-cyl cars had the same ratios, but used different final drives depending on: XFi/12 in rims/13 in rims/convertable (heavier).

Some bedtime reading...
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
Ecodriving test:
Manual vs. automatic transmission MPG showdown

has launched a forum for the efficient new Mitsubishi Mirage - fuel efficiency info for Geo Metro owners - electric car conversion on a beer budget
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