Harley Davidson Knucklehead Engine Specs

Interesting facts Knucklehead is a word used by enthusiasts to refer to a Harley-Davidson motorcycle engine named after the distinct shape of the rocker box covering for an overhead valve that resembles two knuckles on a clenched fist.

Harley davidson knucklehead engine specs. The Esolo was the base model in the series that use to give the output of around 37hp with a compression ratio of 651 and the ES model was the same which is used in sidecar rings. 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 bore of this engine is 375 inches and the stroke is four inches. The famed Knucklehead engine. Four stroke 45 V-Twin OHV.

The torque of this engine is 82 ft-lb at 3500 rpm. Both engines have markedly made their place in Harley history. Wet Wally Build Time.

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. It pushes 80 horsepower at 5200 rpm. 1207 cc 74 cu-in.

The owner rebuilt the engine to factory specs and the transmission was subjected to the same treatment. Harley Davidson FL 1200 Type 74 Knucklehead. To understand how and why Harley-Davidson and the rest of the motorcycle industry got to where it is today it is important to first understand the 1936 model EL.

The H-D Knucklehead V-twin was introduced in 1936. This motor has been sitting a long time and the person we got it from knew very little about it. Frank Marino Powerhouse Cycles Cases.