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Those ridges or scallops around the engine seem to serve 2 purposes - in that application there seems to be an intake in front of the scallop. It seems this is providing cooling around the top of the cylinders. They also might be providing clearance for the rocker arm covers located at the top of the cylinder.Aggie08 said:What do you call those ridges around the engine? They are very characteristic of italian planes
How?loomaluftwaffe said:I've heard they are used to help out with the torque problem
the lancaster kicks *** said:by providing resistance to the turning motion, duh