Honda F engine
Encyclopedia
The Honda F-Series engine was Honda's "big block" SOHC inline four, though lower production DOHC versions of the F-series were built. It features an aluminum open deck cast iron sleeved block and aluminum/magnesium cylinder head. Honda's F22B1 Engine won a spot on the Ward's 10 Best Engines List in 1995 and 1996.

F18A

This engine was used by Honda
Honda
is a Japanese public multinational corporation primarily known as a manufacturer of automobiles and motorcycles.Honda has been the world's largest motorcycle manufacturer since 1959, as well as the world's largest manufacturer of internal combustion engines measured by volume, producing more than...

.
  • Bore × Stroke: 85.0 × 81.5 mm
  • Displacement: 1849 cc
  • Valve Configuration: SOHC, 16 valves
  • 118 bhp
    Horsepower
    Horsepower is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.Horsepower was originally defined to compare the output of steam engines with the power of draft horses in continuous operation. The unit was widely adopted to measure the...

     up to 1997
  • 105PS @ 6000 rpm, 14.6 kg m @ 4000 rpm (PGM-carb)
  • Fuel consumption : 13.0 km/l

F18B

This engine was used for the Honda Accord
Honda Accord
The Honda Accord is a series of compact, mid-size and full-size automobiles manufactured by Honda since 1976, and sold in a majority of automotive markets throughout the world....

 1.8 VTS/VTE in Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

. Also found in the European Honda Accord Vtec S.

Specifications
  • Bore × Stroke: 85.0 × 81.5 mm
  • Displacement: 1849 cc
  • Valve Configuration: SOHC, 16 valves, VTEC
    VTEC
    VTEC is a valvetrain system developed by Honda to improve the volumetric efficiency of a four-stroke internal combustion engine. The VTEC system uses two camshaft profiles and electronically selects between the profiles. It was invented by Honda R&D engineer Ikuo Kajitani, and was the first system...

  • Compression ratio: 9.3:1
  • Max power: 138HP (103 kW)
  • Max torque: 124 ft·lb (168 N m)

F20A

This engine series was used in the Honda Accord
Honda Accord
The Honda Accord is a series of compact, mid-size and full-size automobiles manufactured by Honda since 1976, and sold in a majority of automotive markets throughout the world....

s and Preludes in Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

 and Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

. The DOHC F20A was also derived from this engine (see below).

Specifications
  • Bore × Stroke: 85.0 × 88.0 mm
  • Displacement: 1997 cc
  • Compression ratio : 9.5:1
  • Valve Configuration: SOHC, 16 valves
  • Max output : F20A2 110 PS @ 6000 rpm (carbureted)
  • Max output : F20A3 110 PS @ 6000 rpm (carbureted)
  • Max output : F20A4 133 PS @ 5400 rpm (PGM-FI)
  • Max output : F20A5 135 PS @ 5400 rpm (PGM-FI)
  • Max output : F20A6 90 PS @ 6000 rpm (carbureted)
  • Max output : F20A7 135 PS @ 5600 rpm (PGM-FI)
  • Max output : F20A8 145 PS @ 5900 rpm (PGM-FI)
  • Max torque : F20A2 16.1 kg m @ 3800 rpm (carbureted)
  • Max torque : F20A4 18.5 kg m @ 4300 rpm (PGM-FI)
  • Max torque : F20A7 19.3 kg m @ 4400 rpm (PGM-FI)
  • Max torque : F20A8 138 ft/lb @ 4400 rpm (PGM-FI)

  • Fuel consumption F20A8 Urban - 25 mpg Highway - 34 mpg
  • Fuel consumption (Japan Combined Cycle) : 9.6 km/l (PGM-FI), 9.8 km/l (carbureted)


This engine also spawned many variants, according to market, but the specs remain largely similar.

The F20A5 is used in the CB3 and CB4 Chassis.

The F20A7 is only used in the European 1992-1993 Accord Coupé (CC1).

F20B

The F20B engine produces 113 kW (154 hp) at 6500 rpm and maximum torque of 186 N•m (137 lb•ft) at 4000 rpm, versus the single-camshaft F20B's 110 kW (148 hp) and 186 N•m (137 lb•ft), respectively. The vehicle's Japanese urban 10/15-mode fuel consumption rating is 14.2 km/L (about 34 mpg)—a 15% improvement over a comparable vehicle powered by the F20B, according to Honda.

Specifications
  • Displacement: 1997 cc
  • Configuration Valve: SOHC, 16 valves, VTEC
  • 148 HP @ 6000 RPM
  • 137 TQ @ 5000 RPM
  • 11.1:1 CR
  • 85mm bore
  • 88mm stroke

F20Z2

This engine series is similar to the F20A above, used in the Honda Accord
Honda Accord
The Honda Accord is a series of compact, mid-size and full-size automobiles manufactured by Honda since 1976, and sold in a majority of automotive markets throughout the world....

 in Asia
Asia
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...

 and Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

.

Specifications
  • Bore × Stroke: 85.0 × 88.0 mm
  • Displacement: 1997 cc
  • Valve Configuration: SOHC, 16 valves

86 КВт 116 л.с.

F22A

This engine series was used in the Honda Accord
Honda Accord
The Honda Accord is a series of compact, mid-size and full-size automobiles manufactured by Honda since 1976, and sold in a majority of automotive markets throughout the world....

 and Honda Prelude
Honda Prelude
The Honda Prelude was a sports coupe produced by Japanese automaker Honda from 1978 until 2001. It replaced the Honda S800, a front-engined, front wheel drive sports car...

 S. Aside from differences in tuning, these engines are substantially similar.

Specifications
  • Bore × Stroke: 85.0 × 95.0 mm
  • Displacement: 2156 cc
  • Valve Configuration: SOHC, 16 valves, non-VTEC
    VTEC
    VTEC is a valvetrain system developed by Honda to improve the volumetric efficiency of a four-stroke internal combustion engine. The VTEC system uses two camshaft profiles and electronically selects between the profiles. It was invented by Honda R&D engineer Ikuo Kajitani, and was the first system...

  • Compression ratio: 8.8:1
  • Max power:
    • F22A1: 125 hp (93.21 4 kW) @ 5200 rpm. (Accord Dx,Lx) NOTE* The 1992-1996 Prelude S had a F22A1 but because of a different more aggressively tuned ECU (P12), the power output was 135  hp (100 kW).
    • F22A4: 130 hp (96.94 kW) @ 5200 rpm. (Accord Ex) The F22A4 is the same motor as the F22A1 but it has slightly more power due to a tubular designed header and slightly bigger exhaust piping.
    • F22A6: 140 hp (104.40 kW) @ 5600 rpm. The F22A6 is the same as the F22A1 except for a slightly more aggressive camshaft, a better flowing cast exhaust manifold, a different more aggressively tuned ECU (PT6), and a different intake manifold that utilizes IAB's and also has a bigger plenum. The F22A6 also has a windage tray in the oil pan, and stiffer valve springs to accommodate the more aggressive camshaft.
    • F22A7: 140 hp (104.40 kW) @ 6101 rpm
  • Max torque:
    • F22A1: 137 ft·lbf (186 N m) @ 4000 rpm
    • F22A4: 142 ft·lbf (193 N m) @ 4000 rpm
    • F22A6: 142 ft·lbf (193 N m) @ 4500 rpm
    • F22A7: 145 ft·lbf (198 N m) @ 5000 rpm

F22B1

This engine was used in the Honda Accord
Honda Accord
The Honda Accord is a series of compact, mid-size and full-size automobiles manufactured by Honda since 1976, and sold in a majority of automotive markets throughout the world....

 EX and Acura CL
Acura CL
The Acura CL is a model of automobile manufactured by Honda's Acura brand from 1996–1999, and from 2001–2003. The CL is often thought to have been a replacement for the Acura Legend coupe, but with the advent of the TL in 1996, which directly replaced the Vigor, the CL is more precisely a TL coupe...

. It was the first F-series engine to feature VTEC
VTEC
VTEC is a valvetrain system developed by Honda to improve the volumetric efficiency of a four-stroke internal combustion engine. The VTEC system uses two camshaft profiles and electronically selects between the profiles. It was invented by Honda R&D engineer Ikuo Kajitani, and was the first system...

. The VTEC
VTEC
VTEC is a valvetrain system developed by Honda to improve the volumetric efficiency of a four-stroke internal combustion engine. The VTEC system uses two camshaft profiles and electronically selects between the profiles. It was invented by Honda R&D engineer Ikuo Kajitani, and was the first system...

 on this engine was tuned more for fuel efficiency than performance.
Specifications
  • Bore × Stroke: 85.0 × 95.0 mm
  • Displacement: 2156 cc
  • Compression ratio: 8.8:1
  • Valve Configuration: SOHC, 16 valves (4 valves per cylinder), VTEC
    VTEC
    VTEC is a valvetrain system developed by Honda to improve the volumetric efficiency of a four-stroke internal combustion engine. The VTEC system uses two camshaft profiles and electronically selects between the profiles. It was invented by Honda R&D engineer Ikuo Kajitani, and was the first system...

  • Max power: 145 hp (108 kW) @ 5500 rpm
  • Max torque: 147 ft·lbf (199 N m) @ 4500 rpm
  • VTEC
    VTEC
    VTEC is a valvetrain system developed by Honda to improve the volumetric efficiency of a four-stroke internal combustion engine. The VTEC system uses two camshaft profiles and electronically selects between the profiles. It was invented by Honda R&D engineer Ikuo Kajitani, and was the first system...

     Switchover: 2600-5250 rpm (2-stage variable)
  • Redline
    Redline
    Redline refers to the maximum engine speed at which an internal combustion engine or traction motor and its components are designed to operate without causing damage to the components themselves or other parts of the engine...

    : 6200 rpm
  • Rev limit: 6900 rpm
  • Firing order
    Firing order
    The firing order is the sequence of power delivery of each cylinder in a multi-cylinder reciprocating engine.This is achieved by sparking of the spark plugs in a gasoline engine in the correct order, or by the sequence of fuel injection in a Diesel engine...

    : 1-3-4-2
  • Fuel control: (1994-1995) OBD-I (1996-1998) OBD-II PGM-FI

F22B2

This engine 2.2l was used in the 1994-1997 Honda Accord
Honda Accord
The Honda Accord is a series of compact, mid-size and full-size automobiles manufactured by Honda since 1976, and sold in a majority of automotive markets throughout the world....

 DX, LX and SE. The F22B6 in the 1995-1997 Honda Odyssey
Honda Odyssey
Honda Odyssey can refer to three motor vehicles manufactured by Honda:* Honda Odyssey , a minivan sold in Japan and other parts of the world* Honda Odyssey , a minivan sold primarily in the United States and Canada...

and the F22B8 in the Honda Shuttle are substantially similar. Also the F22B3 engine used in the 1994-1997 Australian and New Zealand Honda Accord
Honda Accord
The Honda Accord is a series of compact, mid-size and full-size automobiles manufactured by Honda since 1976, and sold in a majority of automotive markets throughout the world....

 LXi are basically the same engine apart from slightly different intake and exhaust manifolds.

Specifications
  • Bore × Stroke: 85.0 × 95.0 mm
  • Displacement: 2156 cc
  • Valve Configuration: SOHC, 16 valves
  • Compression ratio: 8.8:1
  • Max power: 130 hp (97 kW) @ 5300 rpm
  • Max torque: 139 ft·lbf (188 N m) @ 4200 rpm
  • Redline
    Redline
    Redline refers to the maximum engine speed at which an internal combustion engine or traction motor and its components are designed to operate without causing damage to the components themselves or other parts of the engine...

    : 6200 rpm
  • Rev limit: 6900 rpm
  • Firing order
    Firing order
    The firing order is the sequence of power delivery of each cylinder in a multi-cylinder reciprocating engine.This is achieved by sparking of the spark plugs in a gasoline engine in the correct order, or by the sequence of fuel injection in a Diesel engine...

    : 1-3-4-2
  • Fuel control: OBD-I OBD-II PGM-FI

F22Z2

This engine was used in the Honda Accord
Honda Accord
The Honda Accord is a series of compact, mid-size and full-size automobiles manufactured by Honda since 1976, and sold in a majority of automotive markets throughout the world....

 2.2i.

Specifications
  • Bore × Stroke: 85.0 × 95.0 mm
  • Displacement: 2156 cc
  • Valve Configuration: SOHC, 16 valves, VTEC
    VTEC
    VTEC is a valvetrain system developed by Honda to improve the volumetric efficiency of a four-stroke internal combustion engine. The VTEC system uses two camshaft profiles and electronically selects between the profiles. It was invented by Honda R&D engineer Ikuo Kajitani, and was the first system...

  • Compression ratio: 9.3:1
  • Max power: 150 hp (112 kW) @ 5500 rpm
  • Max torque: 148 ft·lbf (200 Nm) @ 4500 rpm

F23A1

This engine was used in the 1998-2002 Honda Accord
Honda Accord
The Honda Accord is a series of compact, mid-size and full-size automobiles manufactured by Honda since 1976, and sold in a majority of automotive markets throughout the world....

 LX, EX, and SE, and in the Acura 2.3CL
Acura CL
The Acura CL is a model of automobile manufactured by Honda's Acura brand from 1996–1999, and from 2001–2003. The CL is often thought to have been a replacement for the Acura Legend coupe, but with the advent of the TL in 1996, which directly replaced the Vigor, the CL is more precisely a TL coupe...

 in North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

.

Specifications
  • Bore × Stroke: 86.0 × 97.0 mm
  • Displacement: 2254 cc
  • Valve Configuration: SOHC, 16 valves, VTEC
    VTEC
    VTEC is a valvetrain system developed by Honda to improve the volumetric efficiency of a four-stroke internal combustion engine. The VTEC system uses two camshaft profiles and electronically selects between the profiles. It was invented by Honda R&D engineer Ikuo Kajitani, and was the first system...

  • Compression ratio: 9.3:1
  • Max power: 150 hp (112 kW) @ 5700 rpm
  • Max torque: 152 ft·lbf (205 N m) @ 4900 rpm

F23A4

This engine was used in the 1998-2002 Honda Accord
Honda Accord
The Honda Accord is a series of compact, mid-size and full-size automobiles manufactured by Honda since 1976, and sold in a majority of automotive markets throughout the world....

 ULEV models. It is substantially similar to the F23A1, but features ULEV certification with a slight reduction of power: 148 hp (108 kW) with a maximum torque of 150 ft·lbf (203 Nm). This engine has a different exhaust manifold and a 32-bit ECU which uses a wideband oxygen sensor when compared to the F23A1.

F23A5

This engine was used in the 1998-2002 Honda Accord
Honda Accord
The Honda Accord is a series of compact, mid-size and full-size automobiles manufactured by Honda since 1976, and sold in a majority of automotive markets throughout the world....

 DX and the 2002 Honda Accord LX VP (value package) in North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

.

Specifications
  • Bore × Stroke: 86.0 × 97.0 mm
  • Displacement: 2254 cc
  • Valve Configuration: SOHC, 16 valves
  • Compression ratio: 8.8:1
  • Max power: 135 hp (100 kW) @ 5500 rpm
  • Max torque: 153 ft·lbf (206 Nm) @ 4500 rpm

F23A7

This engine was substantially similar to the F23A1. It was used in the 1998 Honda Odyssey
Honda Odyssey
Honda Odyssey can refer to three motor vehicles manufactured by Honda:* Honda Odyssey , a minivan sold in Japan and other parts of the world* Honda Odyssey , a minivan sold primarily in the United States and Canada...

and the 1998-1999 Isuzu Oasis
Isuzu Oasis
The Isuzu Oasis was a minivan produced as result of an agreement between Isuzu and Honda from 1996 to 1999. It was the only minivan sold by Isuzu....

.

F20A

This engine was used in the 1990–1993 CB3 and CB4 Honda Accord
Honda Accord
The Honda Accord is a series of compact, mid-size and full-size automobiles manufactured by Honda since 1976, and sold in a majority of automotive markets throughout the world....

 2.0Si and Si-T in Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

.

Specifications
  • Bore × Stroke: 85.0 × 88.0 mm
  • Displacement: 1997 cc
  • Valve Configuration: DOHC, 16 valves
  • Compression ratio: 9.5:1
  • Max power: 150 hp (112 kW) @ 6100 rpm
  • Max torque: 137 ft·lbf (186 Nm) @ 5000 rpm

F20B

This engine series was used in the CF4, CF5, CF9, CL3 Honda Accord and Honda Torneo from Japan. It uses a DOHC VTEC cylinder head similar to the H22A found in the Prelude
Honda Prelude
The Honda Prelude was a sports coupe produced by Japanese automaker Honda from 1978 until 2001. It replaced the Honda S800, a front-engined, front wheel drive sports car...

 but was designed to comply with many countries' sub-2.0 liter tax. The automatic transmission versions received the lower hp version (180 hp), as it was tuned for more mid-range torque than its manual transmission counterpart. The F20B(depending on auto or manual versions)also utilizied stronger cams from the H22 type S.

Specifications
  • Accord SiR wagon, SiR-T F20B 97-01 2.0L
  • Valve train: 4 Cylinder, DOHC VTEC, 16 Valve
  • Bore: 85.0 mm
  • Stroke: 88.0 mm
  • Displacement: 1997 cc
  • Torque: 145 ft.lbf @ 5500 rpm
  • Horsepower: 197 hp @ 7000 rpm
  • Red Line: 7400 rpm
  • Compression: 11.0:1
  • Fuel Control: OBD-2

F20C

This engine was a radical departure from previous F engines, and only shared basic dimensions such as bore spacing. It was designed specifically for the Honda S2000
Honda S2000
The Honda S2000 is a roadster that was manufactured by the Japanese automaker Honda Motor Company. It was launched in April 1999 and was created to celebrate the company's 50th anniversary. The car was first shown as a concept at the Tokyo Motor Show in 1995, following which it was launched in...

 and shares some engineering with the Honda K engine
Honda K engine
The Honda K series engine is a four-cylinder four-stroke engine introduced in 2001. The K series engines are equipped with DOHC valvetrains and use roller rockers to reduce friction. The engines use a coil-on-plug, distributorless ignition system with a coil for each spark plug...

. A long-stroke F22C1 variant was also produced.

F22B

This engine was used in the 1992–1996 Honda Prelude
Honda Prelude
The Honda Prelude was a sports coupe produced by Japanese automaker Honda from 1978 until 2001. It replaced the Honda S800, a front-engined, front wheel drive sports car...

 Si in Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

. It is similar to the H23A
Honda H engine
The Honda H engine was Honda's high-performance engine family from the 1990s and early 2000s. It is largely derived from the Honda F engine with which it shares many design features. Like Honda's other 4-cylinder families of the 80s and 90s, it was replaced by the Honda K engine...

.

Specifications
  • 2.2 L
  • Bore × Stroke: 85.0 × 95.0 mm
  • Displacement: 2156 cc
  • Valve Configuration: DOHC, 16 valves
  • Compression ratio: 9.3:1
  • Max power: 166 hp (119 kW) @ 6000 rpm
  • Max torque: 150 ft·lbf (200 N m) @ 5000 rpm
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