Bore (engines)
Bore is the diameter measurement of the cylinders in a piston engine.

Engine displacement
Engine displacement
Engine displacement is the volume swept by all the pistons inside the cylinders of an internal combustion engine in a single movement from top dead centre to bottom dead centre . It is commonly specified in cubic centimeters , litres , or cubic inches...

 is calculated by:

The term "bore" can also be applied to the bore of a locomotive cylinder.

See also

  • Stroke (engine)
  • Compression ratio
    Compression ratio
    The 'compression ratio' of an internal-combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its largest capacity to its smallest capacity...

  • Cylinder head porting
    Cylinder head porting
    Cylinder head porting refers to the process of modifying the intake and exhaust ports of an internal combustion engine to improve the quality and quantity of the air flow. Cylinder heads, as manufactured, are usually suboptimal due to design and manufacturing constraints...

  • Reciprocating engine
    Reciprocating engine
    A reciprocating engine, also often known as a piston engine, is a heat engine that uses one or more reciprocating pistons to convert pressure into a rotating motion. This article describes the common features of all types...

  • Two-stroke cycle
    Two-stroke cycle
    A two-stroke engine is an internal combustion engine that completes the process cycle in one revolution of the crankshaft...

  • David Pooley - The machine
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