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joemaruschak: Boxer Flat 4
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joemaruschak: Boxer Flat 4 - reverse view
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joemaruschak: Boxer Flat 4 - Valve detail
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joemaruschak: Boxer Flat 4 - Cam and pushrods.
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joemaruschak: Boxer Flat 4 - Crank detail
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joemaruschak: BOXER4
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joemaruschak: valve and spark plug detail
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joemaruschak: alternate view of valve and plugs