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  1. chairchild

    Why can't diesels rev as high as spark ignition engines?

    the engine speed is mainly affected by rotational mass - the piston/conrod/gudgeon pin assembly on a Rover L series diesel (a fairly common 2L diesel engine) weighs in at around 1.6kg - for comparison, a "race spec" piston/conrod for the equivalent petrol engine by the same manufacturer, comes...
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