Opel Celebrates 100 Years of Four-Valve Engines [Gallery]

A hundred years ago, Opel launched its first four-valve per cylinder engine in the 1913 Grand Prix Car, paving the way for a series of four-valve engines that today are more present than ever in the brand’s lineup. Read more »
Opel Celebrates 100 Years of Four-Valve Engines [Gallery]
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Reviewed by Unknown
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04:53:00
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