MotorTrend on MSN
Best of Both Worlds: Are You Ready for a Six-Stroke Car Engine?
Researchers aim to meld the best attributes of both the power-dense two-stroke and the vastly cleaner four-stroke engines.
MotorTrend on MSN
Porsche's Six-Stroke Engine Could Kill Four-Stroke Designs
The German automaker sees your four-stroke engine and raises you... two more strokes. Ready for some math? Porsche just ...
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