page_title: Triumph Bonneville T140
section_title: Engine
hierarchical_section_title: Triumph Bonneville T140 / Design / Engine
caption_attribution_description: English: Detail of a Triumph T140E Bonneville motorcycle engine.
context_page_description: The Triumph Bonneville T140 is a standard motorcycle with a 750 cc capacity engine that was designed and built by Triumph Engineering at Meriden near Coventry.
  The T140 was the second generation in the Bonneville series developed from the earlier 650 cc T120 Bonneville and was produced by Triumph in a number of versions, including limited editions, from 1973 until 1983 when the company was declared bankrupt. Licensed production of the T140 Bonneville was continued by Les Harris between 1985 and 1988 at Newton Abbot in Devon, these machines became known as 'Harris' or 'Devon' Bonnevilles.
  A single carburettor version, the TR7 Tiger was produced between 1973 and 1981.
context_section_description: The T140 uses a 360-degree, air-cooled parallel twin layout. Gear driven camshafts operate a single inlet and exhaust valve in each cylinder via pushrods. Twin Amal carburettors supply the cylinders with fuel/air mixture through short intake manifolds. The crankshaft drives the clutch through a triplex chain operating in an oil bath. Starting is by kick start with later versions having electric start.
  The engine oil system is of the dry sump type, a combined pressure and scavenge oil pump is driven by the inlet camshaft gear, later versions of the T140 employed additional integral non-return valves to prevent oil draining into the sump. The frame of the T140 serves as the engine oil reservoir.
caption: Detail of a T140E Bonneville engine
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