Engineering:Hartley Bolt 4 engine

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Hartley BOLT4[1]
Overview
ManufacturerHartley Enterprises
Layout
ConfigurationL4, 16-valve, (four-valves per cylinder), petrol engine
Displacement1.2–1.6 L (73.2–97.6 cu in)
Cylinder bore81–84 mm (3–3 in)
Piston stroke57–70 mm (2–3 in)
Block materialCast aluminium alloy
Head materialCast aluminium alloy
Valvetrain16v DOHC (quad-cam)[2]
Combustion
Fuel typePetrol
Oil systemDry sump
Cooling systemWater-cooled
Output
Power output240–400 hp (179–298 kW)
Dimensions
Dry weight74 kg (163 lb)

The Hartley Bolt 4 engine, stylized as BOLT4 is a 16-valve four-stroke naturally-aspirated DOHC I4 engines, designed, developed and built by John Hartley and Hartley Enterprises.[3][4]

References