The F20C and F22C1 were inline-4 engines produced by

Honda is a Japanese public multinational conglomerate manufacturer of automobiles, motorcycles, and power equipment, headquartered in Minato, Tokyo, Japan. Honda has been the world's largest motorcycle manufacturer since 1959, reaching a product ...

for use in the

Honda S2000 The Honda S2000 is an Roadster (automobile), open top sports car that was manufactured by Japanese automobile manufacturer Honda, from 1999 until 2009. First shown as a concept car called the SSM at the Tokyo Motor Show#1995, Tokyo Motor Show in ...

. They are one of the few Honda 4-cylinder automobile engines that are designed to sit

longitudinal Longitudinal is a geometric term of location which may refer to: * Longitude ** Line of longitude, also called a meridian * Longitudinal engine, an internal combustion engine in which the crankshaft is oriented along the long axis of the vehicle, ...

ly for

rear wheel drive Rear-wheel drive (RWD) is a form of engine and transmission layout used in motor vehicles, in which the engine drives the rear wheels only. Until the late 20th century, rear-wheel drive was the most common configuration for cars. Most rear-wheel ...

. These engines are a distant relative to the F-series engines found in the mid-1990s Honda Accord and

Prelude Prelude may refer to: Music *Prelude (music), a musical form *Prelude (band), an English-based folk band *Prelude Records (record label), a former New York-based dance independent record label *Chorale prelude, a short liturgical composition for ...

. To get most out of the compact-sized engine, Honda engineers utilized technology derived from Honda's racing engines. The F20C and F22C1 have two overhead cams with roller followers, a ladder-frame main bearing stiffener, a VTEC system for both the intake and exhaust camshaft, Fiber-Reinforced Metal cylinder liners (FRM),

molybdenum disulfide Molybdenum disulfide (or moly) is an inorganic compound composed of molybdenum and sulfur. Its chemical formula is . The compound is classified as a transition metal dichalcogenide. It is a silvery black solid that occurs as the mineral molybdenit ...

-coated piston skirts for reduced friction, and uses a timing chain. The VTEC system consists of two separate cam lobe profiles. Variable cam phasing is not used. Roller followers are used to reduce friction in the valvetrain. The

rocker arm In the context of an internal combustion engine, a rocker arm is a valvetrain component that typically transfers the motion of a pushrod to the corresponding intake/exhaust valve. Rocker arms in automobiles are typically made from stamped steel ...

s are constructed using metal injection molding. The engine block is constructed of aluminum with a fiber-reinforced metal sleeve. A timing chain drives an intermediate gear, which drives the cams. The pistons are forged aluminum. The intake plenum was designed with minimal volume for fast engine response, and a

flywheel A flywheel is a mechanical device which uses the conservation of angular momentum to store rotational energy; a form of kinetic energy proportional to the product of its moment of inertia and the square of its rotational speed. In particular, ass ...

was fitted until 2004. A high-flow

catalyst Catalysis () is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst (). Catalysts are not consumed in the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recyc ...

is supplied along with an exhaust air-injection system, which greatly decreases catalyst light-off time and cold emissions.

F20C

*Rod Length: 153 mm (approximately 6.024 in) *Rod/stroke ratio: approximately 1.8214:1 *Power: ** JDM at 8,600 rpm & at 7,500 rpm ** USDM at 8,300 rpm; at 7,500 rpm *Rev limit: 9,000 rpm *VTEC actuates between 5,500-6,000 rpm depending on ECU triggers. The F20C was designed with high engine speed capability in mind, for increased power output; the rev limit is 9,000 rpm, with VTEC engagement at 6,000 rpm. Its relatively long stroke of 84 mm results in a mean piston speed of 4,965 ft/m, or 25.2 m/s, which was higher than any other production car to date. Power output is at 8,300 rpm in North America and Europe. The Japanese version, which has a higher compression ratio, is capable of at 8,600 rpm. Honda's F20C Engine won a spot on

Wards Ward may refer to: Division or unit * Hospital ward, a hospital division, floor, or room set aside for a particular class or group of patients, for example the psychiatric ward * Prison ward, a division of a penal institution such as a priso ...

' ''10 Best Engines List'' twice, in 2000 and 2001. The engine displaces , lending to the Honda S2000's name. This method of naming follows suit with the rest of the Honda S roadsters (i.e.

Honda S500 The S500 was the second production car from Honda (and its first passenger automobile), released in 1963, following the T360 truck into production by four months. It was a larger-displacement variant of the S360 roadster which, though developed ...

, S600, and S800). Applications: * 1999-2005 Honda S2000 (

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

) * 2000-2003 Honda S2000 (

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

) * 1999–2009 Honda S2000 (

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Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

) *2009 IFR Aspid *2009 Skelta G-Force The F20C produces the highest specific power output for any

naturally aspirated Naturally may refer to: ;Albums * ''Naturally!'', an album by Nat Adderley * ''Naturally'' (Houston Person album) * ''Naturally'' (J. J. Cale album) * ''Naturally'' (John Pizzarelli album) * ''Naturally'' (Sharon Jones album) * ''Naturally'' ...

piston engine in a car priced under

US$ The United States dollar (symbol: $; code: USD; also abbreviated US$ or U.S. Dollar, to distinguish it from other dollar-denominated currencies; referred to as the dollar, U.S. dollar, American dollar, or colloquially buck) is the official ...

100,000, at per liter, ahead of the SR16VE N1 found in the homologation version of the JDM Nissan Pulsar producing for a specific power of per liter. Honda's F20C engine held the record for producing the highest specific power output for any mass production naturally aspirated piston engine, at 123.5 HP/L, until Ferrari began production of the 458 Italia in 2010, which produced 124.5 HP/L. Although designed at the end of the previous century, the F20C is still one of the highest output per liter and the highest revving mass production engines ever made. In recognition of its incredible power output, the Honda S2000's engine has won the

International Engine of the Year The International Engine of the Year is an annual competition for automotive industry internal combustion engines and electric motors, judged by a panel of automobile journalists from around the world. It is organised by UKi Media & Events' Automot ...

category for 1.8 to 2.2-liter engines five times in its lifetime (from 2000 to 2004).

F22C1

*Rod Length: 149.65 mm (approximately 5.892 in) *Rod/stroke ratio: approximately 1.6499:1 *Power: **USDM at 7,800 rpm; at 6,500 rpm (revised to at 7,800 rpm in 2005 per SAE Certified Power standard) *Rev limit: 8,200 rpm *VTEC: "6,000 rpm" In 2004, Honda produced a stroked version of the F20C, increasing displacement by to . Dubbed the F22C1, it was originally designed for the North American market being introduced for the 2004 model year. Maximum power output was maintained at at 7,800 rpm. Rated torque increased from at 7,500 rpm for the F20C to at 6,500 rpm for the F22C. The redline was reduced from 8,900 rpm to 8,200 rpm, mandated by the longer travel distance of the pistons. Peak horsepower output was originally rated identical to the F20C, with "overall powerband characteristics strengthened 4% to 10% between 1,000 -8,000 rpm". The F22C1 was used exclusively in the North American market for 2004 and 2005 with the F20C being used in all other markets. In 2006, the engine fully replaced F20C engines in the Japanese market as well which resulted in a drop in rated power output from to . Outside Japan and the United States, the F20C continued to be the only available engine. Applications: * 2004–2009 Honda S2000 (F22C1) (North America) * 2006–2009 Honda S2000 (Japan)

References

External links

* http://www.honda.co.jp/HOT/ModelData/s2000/index.html {{DEFAULTSORT:Honda F20c Engine F engine Straight-four engines Gasoline engines by model

F20C

F22C1

See also

References

External links