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Motorcycle Glossary of Terms


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Gap - The distance the spark must travel in jumping from the centre electrode in a spark plug. Also refers to the distance between the ignition rotor and the pickup coil in an electronic ignition system.

Gasket - Any think, soft material - usually cork, cardboard, asbestos or soft metal - installed between two metal surfaces to ensure a good seal. For instance, the cylinder head gasket seals the joint between the block and the cylinder head.

Gauge - An instrument panel display used to monitor engine conditions. A guage with a movable pointer on a dial or a fixed scale is an analogue gague. A guage with a numerical readout is called a digital guage.

Gearbox - Cased trains of pinion wheels which can be moved to provide alternate ratios.

Gear ratios - Differental rates of speed between sets of pinions to provide higher or lower rotation of the rear wheel in relation to the engine.

Gixer - Slang for Suzuki's GSXR.

GP - Grand Prix, an international race to a fixed forumla.