Harley Davidson Model 7D Engine 1911

Two years after the first V twin engine 1911 model 7D engine was the first to get a camshaft driven intake valves, its the first year of the vertical fins on Harley-Davidson engines, the engine equipped with Bosch DU magneto ignition system - the only option on this model year, its right side cover hide the camshaft and the 4 gears which pass the motion to the magneto, this engine have some extra oil inlet points for the manual oil system, one of those oil inlet locate on the base of the front cylinder, the cylinders casting are not identical (see exhaust vanes) and a matching numbers appear on cases and original fitted cylinders,...

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