Harley Davidson Engine Knuckle

6033ci 98856cc air-cooled OHV 45-degree V-twin 3-516in x 3-12in bore and stroke 71 compression ratio 40hp 4800rpm Weight wet.

Harley davidson engine knuckle. The engine is a two-cylinder 45 degree pushrod actuated overhead valve V-twin engine with two valves per cylinder. However it was the only one of these models to feature the Knucklehead engine. The H-D Knucklehead V-twin was introduced in 1936.

H-D introduced the FL in 1941. 1936 Harley-Davidson EL Knucklehead. The factory name for the Knucklehead was the rather more prosaic EL model.

This engine is known as Knucklehead Knuckle Head due to its characteristic contours of the rocker arm bearing on the cylinder head. Here is a set of genuine original Harley-Davidson 1937 Knucklehead engine motor cases. These come with a 1937 Harley-Davidson Illinois SOS historical document.

Sep 13 2021 - Explore kaoss board Harley Davidson Knucklehead followed by 158 people on Pinterest. 1941 Harley-Davidson FL Knucklehead. The Harley-Davidson EL Knucklehead.

In the twenties and thirties overhead valve engines were well known to be more efficient and consequently more powerful than either side-valve engines or the hybrid F-head with its overhead inlet and side exhaust valve. In 1941 Harley-Davidson introduced the 74-inch 1208cc OHV engine making 53 horsepower and the Knucklehead would remain in production until the introduction of the Panhead in 1948. If youre a dyed in the wool Harley Davidson fan you would probably argue that all of the Motor Cos engines produce a unique and instantly recognizable exhaust note.

The knucklehead is a retronym used by enthusiasts to refer to a Harley-Davidson motorcycle engine so named because of the distinct shape of the rocker boxes. Harley-Davidson Big Twins The Knucklehead. Other more complex motorcycle engine designs existed of course but the overwhelming majority of motorcycles on the road were these simpler less complicated.