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Old 09-03-2009, 10:35 AM   #849 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,274

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

MPGiata - '90 Mazda Miata
90 day: 52.07 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: 70.75 mpg (US)
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vpoppv: sorry for the delayed response - I didn't see your question (was away sailing when you posted it and it got lost in the volume of messages).

The car has "unassisted" brakes like Dr Larry's car, but we didn't puncture the booster diaphragm. Instead we upgraded the smaller rotors & calipers from the 3-cylinder car to the larger caliper & rotors from the 4-cylinder car. The brakes are still firm, and a fair amount of muscle is required to stop quickly. (How hard? I wouldn't feel comfortable letting my mom drive it.) But it's noticeably improved over the "unassisted" 3-cylinder setup.

I'm reluctant to puncture the diaphragm because once I do, if I decide later to add a vacuum pump to reduce braking effort, it can't be undone.

I know Dr Larry swears by his punctured diaphragm method, but I'd like to hear a 2nd or 3rd opinion of someone else who's done it before I'd take that step.
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: Oops, I did it again! Bought another cheap, 3-cylinder Mirage. Mods 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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