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  2. Variable camshaft timing - Wikipedia

    en.wikipedia.org/wiki/Variable_camshaft_timing

    For twin-cam or DOHC engines, VCT was used on either the intake or exhaust camshaft. (Engines that have VCT on both camshafts are now designated as Ti-VCT.↓) The use of variable camshaft timing on the exhaust camshaft is for improved emissions, and vehicles with VCT on the exhaust camshaft do not require exhaust gas recirculation (EGR) as retarding the exhaust cam timing achieves the same ...

  3. AMC V8 engine - Wikipedia

    en.wikipedia.org/wiki/AMC_V8_engine

    The Gen-2 is closer to the physical size of U.S.-made small-block V8s except for the bore centers, which are the same as some big-block engines. The only parts shared between the 1966-67 Rambler V8 and 1966-91 AMV8 are the lower cam timing sprocket and the timing chain. [citation needed]

  4. Ford Duratec V6 engine - Wikipedia

    en.wikipedia.org/wiki/Ford_Duratec_V6_engine

    A racing version of this engine exists and is used on mini prototypes like the Juno SS3 V6. It is a 3.0 L (2,967 cc) naturally aspirated non variable timing engines producing between 350 and 400 hp (261 and 298 kW) with a redline of around 8700 rpm. The engine has a 40-hour racing life span before it needs to be rebuilt with rings and bearings ...

  5. Cosworth - Wikipedia

    en.wikipedia.org/wiki/Cosworth

    The NVH was improved with a change from a single chain to drive all four camshafts – to one chain to drive one bank of cams and a second for the other bank; this engine was known as the 'BOB'. A racing version was also available for a short time – FBE – with an individual throttle butterfly for each cylinder.

  6. Variable valve timing - Wikipedia

    en.wikipedia.org/wiki/Variable_valve_timing

    Variable valve timing (VVT) is the process of altering the timing of a valve lift event in an internal combustion engine, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with variable valve lift systems.

  7. Ford Expedition - Wikipedia

    en.wikipedia.org/wiki/Ford_Expedition

    The Ford Expedition is a full-size three-row SUV, manufactured and marketed by Ford over four generations since model year 1997, deriving directly from Ford's concurrent generations of its F-150 pickup truck—and marketed since 2007 in regular and extended lengths (the Expedition EL/Max), the latter replacing the Ford Excursion.

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