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Old 11-11-2008, 01:48 PM   #3 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,451

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

MPGiata - '90 Mazda Miata
90 day: 55.97 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: 67.41 mpg (US)
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Hi Z33ky - welcome to the site.

Preface: I'm not sure if the XFi motor's compression is different (it could be slightly higher, owing to different valve timing/lift/duration).

The spec on my '98 garden variety engine is 199 PSI @ 250 RPM according to the factory service manual.

Quote:
Minimum allowable compression pressure is 156.4 psi @ 250 RPM

Important: the maximum allowable compression pressure difference between any two cylinders is 14.2 psi @ 250 RPM
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