Betula

The Liberty L-8 (also known as the Packard 1A-1100) was a prototype of the Liberty L-12 engine designed by Jesse Vincent and Elbert Hall. Fifteen L-8 prototypes were manufactured by several companies including Buick, Ford, Lincoln, Marmon, and Packard in 1917.^[1][2] The first of those built now resides in the National Air and Space Museum in Washington, D.C., while fifteenth L-8 (the only running example) powers Liberty the Second housed by the Conneaut Lake Historical Society in Conneaut Lake, PA.^[3] Another L-8 is stored at the National Museum of the U.S. Air Force in Dayton, OH.^[4]

Data from National Air and Space Museum,

• Type: 8-cylinder, liquid-cooled Vee aircraft piston engine
• Bore: 5 in (127 mm)
• Stroke: 7 in (178 mm)
• Displacement: 1,099.6 cubic inches (18.0 L)
• Length: 57 inches (1,448 mm)
• Dry weight: 575 pounds (260.8 kg)

• Valvetrain: One intake and one exhaust valve per cylinder, actuated via a single overhead camshaft per cylinder bank.
• Cooling system: Liquid-cooled

• Power output: 290 hp (216 kW) at 1,700 rpm
• Specific power: 0.26 hp/in³ (11.9 kW/L)
• Power-to-weight ratio: 0.45 hp/lb (0.74 kW/kg)

Comparable engines

• Benz Bz.IIIb

Related lists

• List of aircraft engines

• "Liberty L-8 (Packard) V-8 Engine". Smithsonian National Air and Space Museum. Retrieved 1 January 2011.