Harley Davidson Knucklehead Engine Specs

With increased horsepower and bold styling changes the motorcycle later earned the nickname of Knucklehead due to the shape of its rocker covers.

Harley davidson knucklehead engine specs. Harley-Davidson has produced many engines in its history. And the model was called the FL. In 1945 Harley-Davidson introduced a new engine that would come to be known as the Panhead and somewhere in that post war period the older OHV engine began being referred to as a Knucklehead because of the shape of the top covers of the engine.

This work was completed using mainly OEM parts. The title has an issue date of 1971. It provides service repair and maintenance information for the 1940-1947 OHV 61 Cubic Inch 1000cc 74 Cubic Inch 1200cc engines Side Valve 74 Cubic Inch 1200cc engines and 80 Cubic Inch 1300cc engines found in 1940-1947 Harley-Davidson motorcycles.

The 1936 Harley Davidson FL 1200 Type 74 Knucklehead was powered by a four-stroke air-cooled 1208cc V-Twin powerplant that was paired to a four-speed manual transmission with. When the Harley-Davidson EL was introduced in 1936 with its all new overhead valve 61 cu. Blockhead 1984-99 All Blockheads have the same displacement of 80 cubic inches.

Now nicknamed the Knucklehead for its bulbous rocker boxes surprisingly the new Harley-Davidson big twin was developed in Depression era America. 53 hp 395 kW 6000 rpm. This motor has been sitting a long time and the person we got it from knew very little about it.

Both engines have markedly made their place in Harley history. Harley Davidson FL 1200 Type 74 Knucklehead. We pulled the top end off to see what was inside and the pistons looked.

Engine and chassis of Harley-Davidsons first OHV Big Twin. Harley-Davidson pulled ahead of Indian in 1936 with the introduction of its first overhead valve V-Twin. All was not well under those distinctive rocker boxes though and the rush to get the bike into production against the wishes of the engineers caused a series of problems particularly with oil leaks and weak.