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Old 03-20-2006 | 03:23 PM
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Ed_Moorman
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From: Shalimar, FL
Default RE: Evolution 46
The Evo trainer engine has a bore & stroke of .87 (22 mm) and .77 (19.6 mm) and a displacement of .455. These are the internal dimensions of the OS & Magnum engines except they call them .46's. I understand the Evo glow engines are made in the same factory as the Magnums.

The Evo .46 has a bore and stroke of .86 and .80. It's displacement actually rounds off to .47. The .46 is a long stroke, smaller bore engine than the .45 trainer engine.

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