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The car initially came with a sidevalve engine but was later improved to an overhead-valve engine.
5 hp, 4-cylinder, overhead-valve engine that drove the rear wheels through a 4:1 auxiliary gearbox.
The stout 4-cycle overhead-valve engine featured pressurized lubrication, a drop-forged high carbon steel crank with 2-1/2-inch diameter crank pins, 3-1/2-inch bore, and 5-inch stroke.