Honda F engine

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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.

Contents

[edit] SOHC engines

[edit] F18A

This engine was used by Honda.

  • Bore × Stroke: 85.0 × 81.0 mm
  • Displacement: 1849 cc
  • Valve Configuration: SOHC, 16 valves
  • 118 bhp up to 1997
  • 105PS @ 6000 rpm, 14.6 kg m @ 4000 rpm (PGM-carb)
  • Fuel consumption : 13.0 km/l

[edit] F18B

This engine was used for the Honda Accord 1.8 VTS in Japan. Also found in the European Honda Accord Vtec S.

Specifications

  • Bore × Stroke: 85.0 × 81.0 mm
  • Displacement: 1849 cc
  • Valve Configuration: SOHC, 16 valves, VTEC
  • Compression ratio: 9.3:1
  • Max power: 138PS (103 kW)
  • Max torque: 124 ft·lbf (165 N m)

[edit] F20A

This engine series was used in the Honda Accords in Japan and Europe. 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 and F20A4 133 PS @ 5400 rpm (PGM-Fi), 110 PS @ 6000 rpm (PGM-carb)
  • Max output : F20A5 135 Ps @ 5400 rpm (PGM-Fi)
  • Max output : F20A7 147 PS @ 5600 rpm (PGM-Fi)
  • Max torque : F20A2 and F20A4 18.5 kg m @ 4300 rpm (PGM-Fi), 16.1 kg m @ 3800 rpm (PGM-carb)
  • Max torque : F20A7 19.3 kg m @ 4400 rpm (PGM-Fi)
  • Fuel consumption (Japan Combined Cycle) : 9.6 km/l (PGM-Fi), 9.8 km/l (PGM-carb)

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

[edit] F20B

This engine series was used in the CF4, CF5, CF9, CL3 Honda Accord and Honda Torneo from Japan. Also had a DOHC derivative (see below)

Specifications

  • Bore × Stroke: 85.0 × 88.0 mm
  • Displacement: 1997 cc
  • Configuration Valve: DOHC, 16 valves, VTEC
  • Compression ratio: 11.0:1
  • Max power: 148 PS (109 kW) @ 6000 rpm (4WD), 150 PS (110 kW) @ 6000 rpm
  • Max torque: 183 N m @ 5000 rpm (4WD), 186 N m @ 5000 rpm

[edit] F20Z

This engine series is similar to the F20A above, used in the Honda Accord in Asia and Europe.

Specifications

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

[edit] F22A

This engine series was used in the Honda Accord and Honda Prelude 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
  • Compression ratio: 8.8:1
  • Max power:
    • F22A1: 125 hp (93 kW) @ 5200 rpm
    • F22A4: 130 hp (97 kW) @ 5200 rpm
    • F22A6: 140 hp (104 kW) @ 5600 rpm
    • F22A7: 150 hp (110 kW) @ 5900 rpm (147hp/108kW with automatic transmission)
  • 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

[edit] F22B1

This engine was used in the Honda Accord EX and Acura CL 2.2. It was the first F engine to feature VTEC.

Specifications

  • Bore × Stroke: 85.0 × 95.0 mm
  • Displacement: 2156 cc
  • Valve Configuration: SOHC, 16 valves, VTEC
  • Compression ratio: 8.8:1
  • Max power: 145 hp (108 kW) @ 5500 rpm
  • Max torque: 147 ft·lbf (199 N m) @ 4500 rpm

[edit] F22B2

This engine was used in the 1994-1997 Honda Accord DX, LX and SE. The F22B6 in the 1995-1997 Honda Odyssey and the F22B8 in the Honda Shuttle are substantially similar.

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

The F22B in the BA9 Prelude had a DOHC configuration

JDM engines were stamped only as F22B.

[edit] F22Z2

This engine was used in the Honda Accord 2.2i.

Specifications

  • Bore × Stroke: 85.0 × 95.0 mm
  • Displacement: 2156 cc
  • Valve Configuration: SOHC, 16 valves, VTEC
  • Compression ratio: 9.3:1
  • Max power: 150 hp (112 kW) @ 5500 rpm
  • Max torque: 148 ft·lbf (200 Nm) @ 4500 rpm

[edit] F23A1

This engine was used in the Honda Accord EX, SE, and LX, and Acura 2.3CL in North America.

Specifications

  • Bore × Stroke: 86.0 × 97.0 mm
  • Displacement: 2254 cc
  • Valve Configuration: SOHC, 16 valves, VTEC
  • Compression ratio: 9.3:1
  • Max power: 150 hp (112 kW) @ 5700 rpm
  • Max torque: 152 ft·lbf (205 N m) @ 4900 rpm

The F23A4 is substantially similar, but features ULEV certification with a slight reduction of horsepower: 148 hp (110 kW) with a maximum torque of 148 ft·lbf (200 Nm).

The 1998 Honda Odyssey and the 1998-1999 Isuzu Oasis used the F23A7 engine, which was substantially similar to the F23A1.

[edit] F23A5

This engine was used in the 1998-2002 Honda Accord DX in North America.

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

[edit] DOHC engines

[edit] F20A

This engine was used in the 1990-1993 CB3 and CB4Honda Accord 2.0Si and Si-T in Japan.

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

[edit] F20B

This engine was used in the 1997-2001 Honda Accord SiR and SiR-T (manual) in non-US countries. It uses a DOHC VTEC cylinder head similar to the H22A found in the Prelude but was designed to comply with many countries' sub-2.0 liter tax. The automatic transmission versions received the lower hp version, as it was tuned for more mid-range torque than its manual transmission counterpart.

Specifications

  • Accord SiR wagon, SiR-T(Type-R) F20B 97-01 2.0L
  • Valve train: 4 Cylinder, DOHC VTEC, 16 Valve
  • Bore: 85.0mm
  • Stroke: 88.0mm
  • Displacement: 1997cc
  • Torque: 144 LBS-FT @ 5500 RPM
  • Horsepower: 200 HP @ 7000 RPM
  • Red Line: 7200rpm
  • Compression: 11.0:1
  • Fuel Control: OBD-2

[edit] F20C

Main article: Honda F20C engine

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 and shares some engineering with the Honda K engine. A long-stroke F22C1 variant was also produced.

[edit] F22B

This engine was used in the 1992-1996 Honda Prelude Si in Japan. It is similar to the H23A,.

Specifications

  • 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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