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How does a V 8 engine differ from a V 10 engine??


Answers: A V8, has 8 cylinders, while the V10 has 10.

Typically both configurations are only really popular in the USA, where fuel consumption has never been a priority, larger engines having been slowly dropped out post world-war II in most countries.

In the USA V8 is certainly now the preferred arrangement for any large engine. With the recent exceptions of the Dodge Viper's V10, the similar Dodge Built Ram Tough V10, and the Ford large truck engine of the same arrangement, there are practically no large engines in the US of post-World War II design that have not been of this type.
Two more cylinders.

The number of cylinders is only part of the equation when it comes to the output of an engine.

An engine in a V arrangement has two banks of cylinders. A V8 has two banks of 4, a V10 has two banks of 5 cylinders.

Not all V8 or V10 engines are large displacement engines. I believe Formula 1 cars use a very small displacement V10, but they rev at close to 20,000 RPMs. A 3L F1 V10 can move a 1322 pound car to speeds over 200MPH.

HTH
A V-8 engine has 8 cylinders, while a V-10 engine has 10 cylinders. All else equal, the V-10 engine will provide more horsepower.
V 8 engine:
The V8 is a very common configuration for large automobile engines. V8 engines are rarely less than 4 litres in displacement and in automobile use have gone up to 8.5 litres or so.

The V8 is a common engine configuration in the highest echelons of motorsport, especially in the USA where it is required in IRL, ChampCar and NASCAR. Formula One will use V8 engines for the 2006 season onwards.

V 10 engine:
A V10 is an engine in V configuration, having 10 cylinders in two banks of five.

The V10 configuration is inherently imbalanced in the vertical plane and generates a rocking moment causing vibration from end to end of the engine. To contain this issue a balance shaft is required. Theoretically, the best V-angle is 72°; with this angle there is no vibration in vertical and transverse directions. The complexity of designing this made the V10 difficult to engineer without computer-aided design (CAD), and therefore the V10 was never used before the 1980s. To save development and parts costs, many V10 engines available today are based on 90° V8 engines, which is less than ideal for balance.


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