RB20 engine EY20 Robin engine specifications as below: modelBore× stroke(mm) Displacement (ml) Rated output Max output(kw/hp) Oil capacity Fuel capacity EY1563×461432.01kw2.7/3.50.6L2.8LRB2067×521832.61kw3.7/5.00.6L3.8LRB28D75×622734.05kw5.6/7.50.85L5.5L