DUCATI TESTASTRETTA ENGINE PDF

The engine known as the Desmoquattro is nearly 15 years old, not bad in these days of constant change and redesign; of course the last versions of the motor represent one of the most highly developed performance engines in current production, certainly engines capable of winning world class races. But we cannot hide the engines age from the legislators, new emissions laws requiring better combustion and greater long term reliability are coming into being. In power terms too the Ducati Corse and the Road bike development crews have done a brilliant job of taking the motor to the max; but now something more is needed; you cannot allow an opponent like Honda to start with a clean sheet of paper and not have to up your own game to remain competitive. In late the R was launched; bikes sold to the world on the internet. The bike was a development of the classic shape with the new development street engine in it.

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Bipantah[ edit ] Castiglioni brothers from Cagiva bought Ducati in May and decided to start new investments in order to compete with Japanese firms. To do this they needed a new powerful engine, so they had a look into different proposals from technical department.

After extensive technical discussions, they preferred Desmoquattro over Bipantah, because the first could be easily installed inside the cradle of the existing models. This was also the introduction of liquid cooling and computerised fuel injection to the V-twin range.

Fabio Taglioni, the designer of earlier Ducati v-twins , had experimented with four-valve heads, but stuck to his degree included valve angle, not realizing that a much lower included valve angle was needed for the benefits of the layout to become apparent. But the camshaft gave a softer, less peaky power delivery and less top-end power: Output was It had a six-speed gearbox. In the Ducati appeared, and only lasted for one season. The basic SP model had a combination of items from the parts bins of higher specification versions of the , but unlike the , had the Testastretta engine in all models.

There were also some chassis and aerodynamic modifications. The Ducati was designed by Pierre Terblanche, amid much controversy and criticism relating to the styling. In aerodynamic improvements as well as engine upgrades were standard. The Ducati and its variants including the R are similar to the , but the has a lower price, smaller, higher revving engine and slightly smaller rear tire.

The Ducati R Xerox race replica was introduced in Testastretta Evoluzione [ edit ] The Ducati had a new engine called the Testastretta Evoluzione "evolution". It had larger displacement, larger valves, narrower included valve angle, better breathing through oval throttle bodies and butterfly valves , lighter weight including magnesium valve covers , and higher output than its predecessors.

The design is aimed at meeting anti-pollution limits to be introduced. The bottom end is derived from the DS Desmodue, with the water pump in the alternator cover. The cc Desmosedici engine is unique among production Ducati models for its use of gear-driven camshafts.

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TECHNICAL ANALYSIS: Ducati’s 821 Testastretta Engine

The new Testastretta engine shared many similarities with the previous Desmoquattro engine in the , although it was completely new from the crankshaft up. Testastretta means narrow head and refers to a complete redesign of the cylinder heads. The desmodromic valve actuation method was retained. The had a bore and stroke of

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