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Old 11-30-2017, 01:38 PM   #95 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,513

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

MPGiata - '90 Mazda Miata
90 day: 52.71 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
90 day: 60.16 mpg (US)
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Next mod: XFi camshaft swap



What you see here is the result of an XFi camshaft-ectomy, freshly performed on the Firefly (and also its stock, garden variety camshaft).

It's not too big a job to pull a cam out of these motors, so I'm swapping it over to the Metro.

I'm doing it the "easy" way, having cut the tops of the timing belt covers of both cars with a dremel to expose just the cam gear. Otherwise, to get the belt cover off, you have to remove the crankshaft AND waterpump pulleys.

The "easy" way leaves the timing belt in place, while you delicately slip the belt off the cam gear once the cam is loose.

The risk of doing it this way is: what happens if the timing belt slips/jumps on the crank gear while the cam is out of the engine or while you're messing around trying to get the belt on/off? It turns into a bigger job, that's what happens.
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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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