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Old 09-19-2017, 10:39 AM   #13 (permalink)
Batman Junior
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
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Last 3: 70.09 mpg (US)

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90 day: 52.8 mpg (US)

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90 day: 61.98 mpg (US)

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Originally Posted by Baltothewolf View Post
4.1 rear diff from a 94-99 car, it will lower your RPM by like 5%. They can be had for cheap. You may he able to trade someone for free who wants your 4.3 for track use.
I actually suggested this to a friend who has the taller diff. Unfortunately his has LSD, and he autocrosses, so he didn't want to do it.

But I may fish around for someone else who wants to do the swap. Thanks to kurzer, now I know we would need to swap shafts as well.
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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