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the cranks for our 2.3 and 2.4 liter engines, but not for the base 2.2 liter engine. ... opposed, 4cylinder, 4-cycle engine just like itfs older type 1 and type 4 ... down from the top onto one of these engines while it was running, and you had X-ray ... . Itfs actually like two 2-cylinder engines joined by one crankshaft. It is kind of ... like two BMW motorcycle boxer engines bolted together. Because it is a 4- ... cycle engine, when the opposing pistons get to top ... are not added to horizontally opposed engines to make them more gbalancedh or  ... gsmoother. Horizontally opposed engines are already harmonically balanced due ... to reduce dynamic stresses, so the engine lasts longer. In the case of our ... -weight the crankshafts in our larger engines is to decrease dynamic stresses and ...