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You need to look again at the crankshaft of your 1342 engine. I suspect you have confused it with a 1423. Given the appropriate ignition timing, either will produce maximum torque at exactly 180 degree intervals. Same applies to a flat-four. Indeed all conventional IC engines with the correct crankshaft deliver power symmetrically throughout the firing cycle. There are some asymmetric marine diesels but there is a good reason for their asymmetry.