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The Honda H engine was Honda's larger 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 1980s and 1990s, It has also enjoyed some success as a racing engine, forming the basis of Honda's touring car racing engines for many years, and being installed in lightweight chassis (such as the Honda CR-X) for use in drag racing. The F20B is a part of the F-series family of engines; it is basically a cast-iron sleeved down destroked version of the H22A. It was developed by Honda to be able to enter into the 2-liter class of international racing.

Honda H engine
Honda H23A-Accord Sir CH9
Overview
ManufacturerHonda
Layout
ConfigurationNaturally aspirated Inline-4
Displacement2.2–2.3 L; 131.6–137.9 cu in (2,157–2,259 cc)
Cylinder bore87 mm (3.43 in)
Piston stroke90.7 mm (3.57 in)
95 mm (3.74 in)
Block materialAluminum
Head materialAluminum
ValvetrainDOHC 4 valves x cyl. with VTEC
Compression ratio9.8:1-11.0:1
RPM range
Redline7000-8700
Combustion
Fuel systemPGM-FI
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power output160–220 PS (118–162 kW; 158–217 hp)
Torque output152–164 lb⋅ft (206–222 N⋅m)

H-Series consisted of two different displacements; H22 2.2 L (2,157 cc) and H23 2.3 L (2,259 cc). Both versions were using the same block; different crankshafts and connecting rods were utilized to achieve displacement variation.[1]


DOHC engines



H22


The H22 debuted in the U.S. in 1993 as the H22A1 for use in the Honda Prelude VTEC. Since then, versions of the H22 would become the Prelude's signature high-performance engine worldwide until the end of Prelude production in 2001. In 1994, Honda of Europe used the H22A cylinder head and the H22A engine block as the Formula 3 engine which was an H22A engine destroked from 2.2 liters to 2.0 liters (F3-2000cc) to compete in the European F3 series. It was then used by Mugen Motorsports as the F20B(MF204B) from 1997-2001. In 1995-1997, Honda of Europe used the same H22A-based F3 engine in the British Touring Car Championship (BTCC) Honda Accord. Also, in 1996-1997 Honda of Japan used the same H22A-based F3 engine in the Japan Touring Car Championship (JTCC) Honda Accord and won the JTCC for both years. Honda of Europe hired Neil Brown Engineering of England to convert the H22A engine into an F3 engine which would be later used in BTCC and JTCC. The type S Prelude has an engine rev cut of 9100rpm.


Engine Specifications


H22A DOHC VTEC Japan only


H22A VTEC engine
H22A VTEC engine

H22A


H22A1


H22A2


H22A3


H22A4


H22A5


H22A7


H22A8


H22Z1


H23


The H23 was an increased-stroke, non-VTEC version of the H22, used in Japan, North America, and Europe. It shared the same Fiber Reinforced Metal (FRM) cylinder wall liners with the H22.

Specifications


H23A1


H23A2


H23A3


H23A DOHC VTEC

In 1998, Honda of Japan produced a rare DOHC VTEC version of the H23A engine for use in Japan only. It has been factory modified with an internal oil passage in the H23A block to operate the VTEC solenoid in the H22A head. It has the same horsepower rating as the H22A engine but a lower redline of 7200rpms because it has a longer stroke than the H22A. The H23A DOHC VTEC has 87 mm × 95 mm (3.43 in × 3.74 in) (bore and stroke) and the H22A DOHC VTEC has 87 mm × 90.7 mm (3.43 in × 3.57 in) (bore and stroke). It also lacked the oil squirters found on the H22A and H22Z VTEC engines, but there are provisions for the oil squirters to be installed, as the main oil galley feeding the squirters has been tapped, the holes for the bolts that hold the squirters at the bottom of each bore have been tapped. Installation of the squirters is possible but the actual squirters need to be bent to clear the larger stroke crank of the H23A VTEC engine. The H23A DOHC VTEC Engine is largest displacement in the H Series engines with a compression ratio of 10.6:1.

Below is a chart that consists all of the engines in the H Series.


H Series Motor Specifications Chart 1

Engine Type Bore x Stroke Power Comp. Height Deck Height Head
H22A Closed Deck 87 mm × 90.7 mm (3.43 in × 3.57 in) 220 PS (162 kW; 217 hp) @ 7,200 rpm & 163 lb⋅ft (221 N⋅m) @ 6,500 rpm 31 mm (1.2 in) 219.5 mm (8.64 in) 53.8 cc (3.28 cu in)
H22A1 190 PS (140 kW; 187 hp) @ 6,800 rpm & 158 lb⋅ft (214 N⋅m) @ 5,500 rpm
H22A2 Closed Deck 185 PS (136 kW; 182 hp)
H22A3 182 hp (185 PS; 136 kW)
H22A4 Open Deck 87 mm × 90.7 mm (3.43 in × 3.57 in) 200 PS (147 kW; 197 hp) @ 7,000 rpm & 156 lb⋅ft (212 N⋅m) @ 5,250 rpm 31 mm (1.2 in) 219.5 mm (8.64 in) 53.8 cc (3.28 cu in)
H22A5 Open Deck 185 PS (136 kW; 182 hp)
H22A7 87.0 x 90.7 mm (3.43 x 3.54 inches) 212 PS (156 kW; 209 hp)
H22A8 200 PS (147 kW; 197 hp) @ 7,100 rpm & 156 lb⋅ft (212 N⋅m) @ 5,250 rpm
H22Z1 203 PS (149 kW; 200 hp)
H23A Open Deck 87 mm × 95 mm (3.43 in × 3.74 in) 165 PS (121 kW; 163 hp) & 156 lb⋅ft (212 N⋅m) 30.5 mm (1.20 in) 219.5 mm (8.64 in) 50 cc (3.1 cu in)
H23A1 Closed Deck 162 PS (119 kW; 160 hp) & 156 lb⋅ft (212 N⋅m)
H23A2 160 PS (118 kW; 158 hp) & 154 lb⋅ft (209 N⋅m)
H23A3
H23A DOHC VTEC Open Deck 87 mm × 95 mm (3.43 in × 3.74 in) 200 PS (147 kW; 197 hp) & 163 lb⋅ft (221 N⋅m)

H Series Motor Specifications Chart 2

Engine Rod Length Rod Width Main Bore Pin Bore Piston Volume Wrist Pin Diam. Main Bearing Width Rod Bearing Width
H22A 143 mm (5.6 in) 23.75 mm (0.935 in) 51 mm (2.0 in) 21.97–21.98 mm (0.865–0.865 in) −1.9 cc (−0.12 cu in) 22 mm (0.87 in) 19.9 mm (0.78 in) 19.35 mm (0.762 in)
H22A1 −1.8 cc (−0.11 cu in)
H22A2
H22A3
H22A4 143 mm (5.6 in) 23.75 mm (0.935 in) 51 mm (2.0 in) 21.97–21.98 mm (0.865–0.865 in) −1.8 cc (−0.11 cu in) 22 mm (0.87 in) 19.9 mm (0.78 in) 19.35 mm (0.762 in)
H22A5
H22A7
H22A8
H22Z1
H23A 141.5 mm (5.57 in) 23.75 mm (0.935 in) 51 mm (2.0 in) 21.97–21.98 mm (0.865–0.865 in) +4.3 cc (0.26 cu in) 22 mm (0.87 in) 19.9 mm (0.78 in) 19.35 mm (0.762 in)
H23A1 −9.9 cc (−0.60 cu in)
H23A2
H23A3
H23A VTEC 141.5 mm (5.57 in)

H Series Motor Specifications Chart 3

Engine Intake Valve Diam. Exhaust Valve Diam. Main Journal Diam. Rod Journal Diam.
H22A 35 mm (1.4 in) 30 mm (1.2 in) 50 mm (2.0 in) 47.95 mm (1.888 in)
H22A1
H22A2
H22A3
H22A4 35 mm (1.4 in) 30 mm (1.2 in) 55 mm (2.2 in)
(1997 only = 50 mm (2.0 in))
47.95 mm (1.888 in)
H22A5
H22A7
H22A8
H22Z1
H23A 35 mm (1.4 in) 30 mm (1.2 in) 55 mm (2.2 in) 47.95 mm (1.888 in)
H23A1 34 mm (1.3 in) 29 mm (1.1 in) 50 mm (2.0 in)
H23A2
H23A3
H23A VTEC 55 mm (2.2 in)

See also



Notes


  1. JDM Spec Engines - Honda H-Series Engines
  2. Honda Motor Co., LTD.: "1993 Prelude Service Manual", p. 3-15. Service Publication Office, 1992
  3. Honda Prelude Owners Manual. JAPAN: Honda Motor co.,LTD. 1998. p. 289.



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