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...ming pulleys, also external to the main [[engine block]], and transmit the timing information to the valves. ...reason for Desmodromic (Colloquial - "Desmo") systems is to improve valve timing at higher engine revolutions. On very high performance valve spring engine

[[Image:FordtaunusV4front.jpg|thumb|right|250px|[[Poppet valve|Valve]] timing [[gear]]s on a [[Ford Taunus V4 engine]] — the small gear is on the [ ...ectly via a belt or chain called a ''[[timing belt]]'' or ''[[roller chain|timing chain]]''. In some designs the camshaft also drives the [[distributor]] and

...umference]]s of two [[pulley]]s connected with a drive [[belt (mechanical)|belt]]. ...lometers later, it synchronizes the two shafts exactly. A chain, called a timing chain, is used on other automobiles for this purpose. In a few automobiles

...r timing of valve actuation they are named timing chains, timing belts and timing gears, respectively.

...V system, these methods may include using a rubber/kevlar toothed [[timing belt]], [[Roller chain|chain]], or in less common cases, [[gears]]. Many OHC engines today employ [[Variable Valve Timing]] and [[multi-valve|multiple valves]] to improve efficiency and power. OHC

...g [[pushrod]]s. This arrangement is more complex, and relies on a [[timing belt]] or chain, but allows for greater valvetrain flexibility. Many OHC engines today employ [[Variable Valve Timing]] and [[multi-valve|multiple valves]] to improve efficiency and power. OHC

Many OHC engines today employ [[Variable Valve Timing]] and [[multi-valve|multiple valves]] to improve efficiency and power. OHC ...the Fiat group is historically credited as the first car company to use a belt driven DOHC engine across their complete product line, comprised of coupes,

...her 999 models is attributed to the top end changes where more extreme cam-timing is countered by oversized [[titanium]] valves with reduced diameter stems o ...lets, 12-hole racing injectors, magnesium head covers, carbon fibre timing belt covers with vents and a carbon fibre silencer heat shield.

...with the engine [[RPM]], also the valve lift varies. See [[variable valve timing]]. ...gears, a chain or in modern engines with a [[rubber]] [[belt (mechanical)|belt]].

...nley Webb riding a 5hp Triumph had to stop at St. Johns to adjust a timing-belt and retired on lap 3 with a problem with the engine exhaust-valve. At the c

...a red pin-stripe, Pirelli tyres, plus carbon fibre fork protectors, timing belt covers, front fender and tail/ exhaust side panels. These upgrades made for

...t [[OHC]] engines drive the [[camshaft]] or [[camshaft]]s using a [[timing belt]], a [[Roller chain|chain]] or multiple [[Roller chain|chain]]s. These syst

...nd things like sealed cooling systems, thermatic fans and a toothed timing belt for the motor. AC 124 coupes gained small changes each year e.g. - an open

This system uses a belt or camshaft driven pump from the engine to pressurise a special hydraulic f ...d gearbox/clutch assembly powered by high pressure hydraulic assistance. A belt driven 7-piston pump, similar in size to a power steering pump generates th

...n the Cayenne features modifications to the head as well as the intake and timing systems. ...ump housing is cast integral with the engine crankcase. In addition to the belt-driven water pump, VR6 engine will use an auxiliary electric pump to circul

** In any belt-driven OHC engine there is a residual loss of power through the belts that ...of [[multi-valve|multiple intake and exhaust valves]] and [[variable valve timing]]. Most cam-in-block engines have two valves per cylinder, while many moder

...ver, belt drives are limited in the amount of power they can transmit. The belt is frequently toothed. A shaft drive is completely enclosed, the visual cue ...ricants and fuel with precisely-tuned spark plugs, air / fuel mixture, and timing. This is obvious, but often neglected.

...modern Ducati engines are derivatives of the Pantah, which uses a toothed belt to actuate the engine's valves. Taglioni used the prancing horse (identifie ...otated by a [[timing belt]] driven by the motor directly. The teeth on the belt keep the [[camshaft]] drive pulleys indexed. On older Ducati motors, prior

...ger, which is most often driven from the engine's crankshaft by means of a belt (otherwise, and in many aircraft engines, by a geartrain), whereas a ''turb ...he exhaust gas does not become overheated (lean mixtures or retarded spark timing on a gasoline engine) a turbocharger can be very reliable but care of the u

...) [[overhead camshaft]], driven by a single rubber/kevlar toothed [[timing belt]]. Fuel supply was via a single [[Weber carburetor|Weber]] ADF twin-[[Vent

...0 L Twin Spark [[petrol engine]]s, the latter two with variable valve timing. The 1.7 L was not sold in the [[United Kingdom]]. ...rk ignition system but received Alfa-designed 16-valve cylinder heads with belt-driven camshafts based on engine blocks of Fiat design. They replaced the

...an 0.15 seconds, with the intake cams being controlled by [[variable valve timing]]. The [[crankcase]] and [[cylinder head]]s are made from an aluminum and s ...front and side driver and passenger [[air bag|airbags]] as well as [[seat belt]] pre-tensioners. Driving stability is provided by Maserati Stability Prog

...ger, which is most often driven from the engine's crankshaft by means of a belt (otherwise, and in many aircraft engines, by a geartrain), whereas a ''turb ...he exhaust gas does not become overheated (lean mixtures or retarded spark timing on a gasoline engine) a turbocharger can be very reliable but care of the u

Apart from that, this engine was also notable for having a two stage valve timing system (before [[Honda]]'s famous [[VTEC]]), and an induction valve blade-t ...ditional Alfa chain-driven DOHC, the engine has a single fan and generator belt which drastically improves reliability and reduces parasitic friction. The

* twin overhead camshafts driven by toothed belt; ...HPE. In 1996 was introduced two 1.8-litre engines, one with variable valve timing, the naturally-aspirated 2.0 was discontinued.

...16 [[Four-stroke cycle engine valves|valve]] engines with [[variable valve timing]], along with the [[straight-4]] 1.9 litre 8-valve 105 PS and [[straight-5] ..., although later models did add a full centre seatbelt in place of the lap belt in earlier models.

..., the F2007 and its drivers have improved considerably and have headed the timing sheets at multi-team tests on various occasions. [[Kimi Räikkönen]] won t ...nel was badly damaged in a testing accident, when a steel sheet [[conveyor belt]], representing the road under the down-scaled F1 car replica, broke up at