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Old 01-22-2008, 09:40 AM   #3 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,641

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

MPGiata - '90 Mazda Miata
90 day: 53.78 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)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 66.29 mpg (US)
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Congrats on diving in, Frederick.

Hope you don't mind me splitting this off from the other thread: Blackfly XFi? Cam swap! Update: swap completed

Your transmission/camshaft project is threadworthy on its own.

I'm surprised you didn't notice a difference in 1st gear. The F.D. in the Flea is high enough now that it takes noticeably more clutch slip to get going smoothly from a stop. It's not a big deal on the flat, but it's particularly evident on hills.

Here's a question: is there any size difference between the wheels/tires that the final drive came from vs. the wheels/tires on your car? My speed/odometer is off now because the 4-cyl transmission was calibrated differently due to different tire sizes. It's off by almost 6% - in the direction that further lowers the effective final gearing, numerically.

Looking forward to your next update!
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
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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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