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Old 02-10-2009, 06:47 PM   #8 (permalink)
Coyote X
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Join Date: Dec 2007
Location: Southen West Virginia
Posts: 654

Metro XFi - '93 Geo Metro XFi Convertible
90 day: 62.17 mpg (US)

DR650SE - '07 Suzuki DR650SE
90 day: 55.26 mpg (US)
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I had a picture I found from teamswift of both piston types side by side and the top ring is in the exact same position on them both. The only difference is the xfi piston doesn't have a second ring groove cut into it. So really just leaving the second ring out on a metro will work fine with no trouble.

If I had a base metro I would tear it down and take the second ring out but I don't really think any normal person would be willing to do that much work for what would probably amount to 1mpg. For a metro needing a rebuild there is no question I would say leave out the second ring.

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