ModelR170ATypeContinental,4strokeCombustionsystemSwirlcombustionchamberNo.ofcylindersSinglecylinderBore×stroke(mm)70×70Totaldisplacement(L)0.269Compressionratio22:11-hourratedoutput(kw/r/min)3.64/2600

ModelR175ATypeContinental,4strokeCombustionsystem(Prechamber)SwirlcombustionchamberNo.ofcylindersSinglecylinderBore×stroke(mm)75×80Totaldisplacement(L)0.353Compressionratio22:11-hourratedoutput(kw/r/m

ModelR180TypeContinental,4strokeCombustionsystemSwirlcombustionchamberNo.ofcylindersSinglecylinderBore×stroke(mm)80×80Totaldisplacement(L)0.402Compressionratio21:1(17:1)1-hourratedoutput(kw/r/min)5.67

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