Specs for an S&S 117 Engineby TS Jordan; Updated September 29, 2017
The S&S 117 is a motorcycle engine designed for custom builds. Purchasing and building your own motorcycle is a demanding endeavor, so ensure that you have fully researched the specifications of the 117 engine before making a purchase. This allows you to avoid buyer's remorse down the line.
Displacement and Cylinder Angle
The displacement of the S&S 117 is, as its name suggests, 117 cubic inches. The cylinder angle of the S&S 117 is 56.25 degrees.
Bore, Stroke, and Compression
The bore of the S&S 117 is 4 1/8 inches. The stroke of the S&S 117 engine is 4 3/8 inches. The compression ratio of the S&S 117 is 9.75-to-1.
Fuel and Ignition
The fuel system of the S&S 117 is a single-bore system with a closed loop design. The ignition is VFI design with knock sensing, allowing the engine to self-modulate in the event of knocking.