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diminished horespower in rebuilds
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Actually blanking a cylinder in a four stroke engine should have a very different effect than in a two stroke engine. <br /> <br />For one, power strokes in a four stroke engine are divided into 720 degrees, while a two stroke's are divided only into 360 degrees. <br /> <br />comparing pistons, con rods, cranks between two and four strokes of comparable output, the four stroke's are always far heavier. In a two stroke engine, mean effective pressures are lower, and the piston is always subject to positive cylinder pressure; this allows two stroke engine components to be much lighter. This is probably why I see so many comments on how EMD's load so much quicker. <br /> <br />The part about mean effective pressure is also one reason two strokes don't make twice the power of a four stroke, another could be pumping losses, because two strokes move about twice as much air. <br /> <br />Anyway, all of these things probably point to blanking cylinders of a two stroke having LESS effect than in a four stroke engine. If a two stroke engine lost a cylinder for any reason, it would probably run smoother than a comparable four stroke losing a cylinder. <br /> <br />The thing is that would be an emergency situation and not the expected running condition of the engine. What would be the long term effect of running an engine with an imbalanced firing order? <br />
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