Honda B engine

The B-series are high performance Inline-4 DOHC automotive engines from the modern series of Honda engines. From the factory they produce between 150 horsepower (110 kW) to around 200 horsepower (150 kW), with some models even having a redline over 8,500 rpm. The engine has been made in 1.6, 1.7, 1.8, and 2.1 liter variants, with and without VTEC (Variable Valve Timing and Electronic Lift Control). Later models have some minor upgrades, for instance modifications to the intake valves and ports and piston tops, along with individual cylinder oil injectors (B18C models).

The B-series enjoyed great success throughout its life as a racing engine either in street trim or full race form. Modified versions of the B-series have seen over 300 hp (224 kW) and 10,000 rpm naturally aspirated, and 1,000 hp (746 kW) with forced induction. Like all Honda engines of the 90s, it was replaced by the K-series in Civic and Integra applications. However, the B-series engine is still highly sought after by enthusiasts today.

B16

JDM B16A (First Generation)

The first VTEC engine. Note: All Honda Motor B16A engines are stamped 'B16A' (with no number after the "A" to identify version). Except in Europe, there it was stamped 'B16A1'.

B16A found in:
1988-1991 JDM Honda Integra RSi/XSi/Si (DA6/DA8)
1989-1991 JDM Honda CRX SiR (EF8)
1989-1991 JDM Honda Civic SiR (EF9)
- - Displacement: 1,595 cc (97.3 cu in) 1.6 liter
  - Compression: 10.2:1
  - Bore: 81.0 mm (3.2 in)
  - Stroke: 77.4 mm (3.0 in)
  - Rod Length: 134 mm (5.3 in)
  - Rod/stroke ratio: 1.745
  - Power: 160 PS (118 kW; 158 hp) @ 7,600 rpm & 15.5 kg⋅m (^{[convert: unknown unit]}) @ 7,000 rpm
  - Redline: 8100 rpm
  - Transmission: S1/J1/YS1 (4.4 final drive), Y1 (4.266 final drive, cable clutch, optional LSD)
  - ECU code: PR3 (DA6/DA8/EF8), PW0 (EF8/EF9/DA6)
  - OBD0

JDM B16A (Second Generation)

Found in:
1991-1994 JDM Honda Civic Sir/SiRII (EG6)
1991-1993 JDM Honda Civic Ferio SiR (EG9)
1992-1995 JDM Honda CRX Delsol SiR (EG2)
1995-1998 JDM Honda Civic Sir/SiRII (EK4)
1995-1998 JDM Honda Civic Ferio Si (EK4)
- - Displacement: 1,595 cc (97.3 cu in) 1.6 liter
  - Compression: 10.4:1
  - Bore: 81.0 mm (3.2 in)
  - Stroke: 77.4 mm (3.0 in)
  - Rod Length: 134 mm (5.3 in)
  - Rod/stroke ratio: 1.745
  - Power: MT: 170 PS (125 kW; 168 bhp) @ 7,800 rpm & 16.0 kg⋅m (^{[convert: unknown unit]}) @ 7,300 rpm
  - VTEC engagement: 5800 rpm
  - Redline: 8200 rpm (AT: 7700 rpm )
  - Transmission: S4C/Y21/S21 (4.4 final drive, optional LSD)
  - ECU code: P30 (EG2/EG6/EG9)
  - OBD1

B16B (Type R)

VTEC
Found in:
- 1997-2000 JDM Civic Type R[EK9]
  - Displacement: 1,595 cc (97.3 cu in)
  - Compression: 10.8:1
  - Bore: 81 mm (3.2 in)
  - Stroke: 77.4 mm (3.0 in)
  - Rod/Stroke ratio: 1.84:1
  - Rod Length: 142.42 mm (5.6 in)
  - Power: 185 PS (136 kW) @ 8200 rpm & 118 lb⋅ft (160 N⋅m) @ 7500 rpm
  - Redline: 8400 rpm
  - Rev-limit: 8900 rpm
  - Transmission: S80-S4C With Helical LSD (4.4 final drive, dual-synchromesh on 2nd, 3rd and 4th gears)
  - VTEC engagement @ 6200 rpm
  - ECU code: PCT
  - OBD-2A

Note: This engine uses the same block as the Integra Type R (B18CR), which is taller than the B16a block (by approx 17mm), but with a crank the same stroke as the b16a. It uses longer rods to accommodate for this, which is why the Rod/Stroke ratio is higher than a standard B16.

http://www.civictyper.org/ek9civic.html

B16A1

VTEC
Found in:
- Early Integra, CRX, Civic'1.6i-VT'(EE8)(EE9)
  - Displacement: 1.6 liter (1595)
  - Bore×Stroke: 81.0×77.4 mm (3.19×3.05 in)
  - Compression: 10.2:1
  - Power: 150 hp (110 kW) @ 7600 rpm
  - Torque: 106 lb⋅ft (144 N⋅m) @ 7100 rpm
  - Redline: 8100 rpm
  - VTEC engagement @ 5200 rpm
  - Transmission: Y2

- - OBD0
  - OBD1(92-93)

B16A2

VTEC

Found in:

- 1992-2000 Honda Civic EDM VTi (EG6/EG9 & EK4)
- 1992-1997 Honda CR-X del Sol EDM VTi (EG)
- 1996-1997 Honda CR-X del Sol USDM "VTEC"
- 1999-2000 Honda Civic USDM Si (EM1)
- 1999-2000 Honda Civic CAN SiR (Ek)
- Displacement: 1,595 cc (97.3 cu in)
  - Bore×Stroke: 81.0×77.4 mm (3.19×3.05 in)
  - Compression: 10.2:1
  - Power: 161 hp (120 kW) @ 7600 rpm & 111 lb⋅ft (150 N⋅m) @ 7000 rpm
  - Transmission: Y21 or S4C
  - Redline: 8,000 rpm
  - Rev Limit: 8,450 rpm
  - VTEC Engagement: 5,600 rpm
  - Aluminum Casting
  - ECU Code: JDM P2T (square case) or USDM P30 (regular case)

B16A3

VTEC
Found in:
- 1994-1995 Del Sol VTEC
- 1995 Civic EG6/EG9
  - Displacement 1,595 cc (97.3 cu in)
  - Power: 160 hp (119 kW) @ 7,600 rpm & 118 ft-lb^{[convert: unknown unit]} @ 7,500 rpm
  - VTEC Engagement: 5,400 rpm
  - Redline: 8,200 rpm
  - ECU Code:P30-A00
  - Transmission: Y21

B16A4

VTEC
Found in:
- 1996-2000 Civic Si-RII (EK4)
  - Displacement: 1,595 cc (97.3 cu in)
  - Compression: 10.4:1
  - Power: 130 kW (177 PS; 174 bhp) @ 7800 rpm & 111 ft⋅lbf (150 N⋅m) @ 7300 rpm
  - Redline: 8200 rpm
  - VTEC engagement @ 5,400 rpm
  - Transmission: Y21

Note: Only offered with SiRs with manual tranmissions.

B16A5

VTEC
Found in:
- 1996-2000 Civic Si-RII (JDM version) (EK4)
  - Displacement: 1,595 cc (97.3 cu in)
  - Compression: 10.4:1
  - Power: 130 kW (177 PS; 174 bhp) @ 7800 rpm & 111 ft⋅lbf (150 N⋅m) @ 7300 rpm
  - Redline: 8250 rpm
  - Transmission: Y21

Note: Only offered with SiRs with automatic transmissions.

B16A6

VTEC
Found in:
- 1996-2000 Honda Civic - South Africa VTEC (EK)
- 1996 Honda Civic SiR (Ek4) Middle East
  - Displacement: 1,595 cc (97.3 cu in)
  - Compression: 10.2:1
  - Power: 118 kW (160 PS; 158 bhp)

B17

B17A1

VTEC
Found in:
- 1992-1993 Integra GS-R (DB2)
  - Displacement: 1,678 cc (102.4 cu in)
  - Bore: 81 mm (3.189 in)
  - Stroke: 81.4 mm (3.205 in)
  - Rod/Stroke Ratio: 1.63
  - Rod Length: 132.28 mm (5.208 in)
  - Compression: 9.7:1
  - VTEC engagement @ 5500 rpm
  - Power: 160 hp (120 kW) @ 7600 rpm & 117 ft·lbf (159 N·m) @ 7000 rpm
  - Came equipped with the YS1 cable trans, which was different than other cable B-series transmissions as it has a different input shaft.

B18

B18A

The B18A is not considered part of the modern B-series family. This engine shares many characteristics with the B20A/B21 See Honda B20A engine.

Found in:
- 1986-1989 Accord Aerodeck LXR-S/LX-S (Japan)
- 1986-1989 Accord EXL-S/EX-S (Japan)
- 1986-1989 Vigor MXL-S (Japan)
  - Displacement: 1,834 cc (111.9 cu in)
  - Compression: 9.4:1
  - Bore: 81 mm (3.2 in)
  - Stroke: 89 mm (3.5 in)
  - Dual Keihin Carbs
  - Power: 100 hp (75 kW) @ 6100 rpm & 128 lb⋅ft (174 N⋅m) @ 4700 rpm
  - Transmission: A2N5, E2N5

B18A1

NON -VTEC
Found in:
- 1990-1993 Acura Integra USDM "RS/LS/GS" (DA9 Coupe, DB1 Sedan)
  - Displacement: 1,834 cc (111.9 cu in)
  - Compression: 9.2:1
  - Bore: 81 mm (3.2 in)
  - Stroke: 89 mm (3.5 in)
  - Rod Length: 137.01 mm (5.394")
  - Rod/Stroke Ratio: 1.54
  - Redline: 6500 rpm
  - Rev Limiter: 6700 rpm
  - Programmed fuel injection
  - Power: 90-91 Only: 132 bhp (98 kW) @ 6000 rpm & 121 ft⋅lbf (164 N⋅m) @ 5000 rpm
  - Power: 92-93 Only: 140 bhp (100 kW) @ 6300 rpm & 130 ft⋅lbf (180 N⋅m) @ 5000 rpm
  - Transmission: 90-91: A1,S1, cable
  - Transmission: 92-93: YS1, cable

B18B1

NON-VTEC
Found in:
- 1994-2001 Acura Integra "RS/LS/GS/SE" (DC4/DB7)
- 1992-1996 JDM Honda Domani (MA5)
- 1993-1994 JDM Honda Inta (DB7)
- 1996-1999 JDM Honda Orthia (EL1)
  - Displacement: 1,834 cc (111.9 cu in)
  - Compression: 9.2:1
  - Bore: 81 mm (3.2 in)
  - Stroke: 89 mm (3.5 in)
  - Rod Length: 137.01 mm (5.394")
  - Rod/Stroke Ratio: 1.54
  - Power: 142 hp (106 kW) @ 6300 rpm & 130 ft⋅lbf (180 N⋅m) @ 5200 rpm
  - Redline: 6800 rpm (7200 rpm on JDM Domani)
  - Rev Limit: 7200 rpm
  - Transmission: Y80/S80
  - JDM version is marked B18B on the block without any number.
  - JDM version has a compression 9.4:1 where the usdm version is 9.2:1.
  - JDM version has a higher compression ratio which results in higher hp and tq levels than the usdm version.

JDM B18C Type R

Type R

VTEC
Found in:
- 95-00 JDM Honda Integra Type R DC2
- 95-00 JDM Honda Integra Type R DB13
  - Rev-limit: 8700 rpm
  - Power: 200 PS or 197 SAE HP @ 8000 rpm & 18.5 kg/m @ 7500rpm (96 spec) 19 kg/m @ 6200 rpm (98 spec)

http://www.honda.co.jp/factbook/auto/INTEGRA/19950824/in95-003.html

- - Transmission: S80 with Helical LSD
  - S80 spec: J4D (96 Spec: 4.4 final drive), N3E (98 Spec: 4.785 final drive w/ 1.034 4th & .587 5th Gears)
  - Displacement: 1,797 cc (109.7 cu in)
  - Compression: 11.1:1
  - Bore: 81 mm (3.2 in)
  - Stroke: 87.2 mm (3.4 in)
  - Rod Length: 137.9 mm (5.4 in)
  - Rod/Stroke Ratio: 1.58
  - VTEC Engagement @ 5700 rpm
  - ECU code: P73-003 (96specR) P73-013 (98specR)

(Source: Honda.co.jp/factbook)

JDM B18C

SiR/GSR

VTEC
Found in:
- 95-98 JDM Honda Integra SiR/SiR II (DB8, DC2)
- 98-99 JDM Honda Integra SiR-G (DB8, DC2)
  - Identification: Black valve cover with dual runner intake manifold
  - Red Line: 8100 rpm
  - Rev-Limit: 8484 rpm- 8550 rpm (*For some only, most newer model SIR/SIR-G cut off at 8254rpm)
  - Power: 132.39 kW (180 PS; 178 bhp) @ 7200 rpm & 128 ft⋅lbf (174 N⋅m) @ 6200 rpm
  - Displacement: 1,797 cc (109.7 cu in)
  - Compression: 10.6:1
  - Bore: 81 mm (3.2 in)
  - Stroke: 87.2 mm (3.4 in)
  - ECU code: P72
  - VTEC Engagement @ 4500 rpm
  - Transmission S80 (with optional LSD)

Highlights of B18C Spec R compared to standard B18C1 GSR and B18C4 VTi

1. Camshaft - Wide-angled, high-lift, high-duration, high-durability camshaft
2. Exhaust Valve Spring - High-lift, dual-layered spring
3. Spark plug - High-heat-type #7 platinum plug
4. Engine Stiffener - Aluminum die-cast, high-durability, one-piece type
5. Crankshaft - Full-counterweight, 8-weight, high-output, custom crankshaft
6. Connecting Rod - Custom TypeR rod, high-durability, lightened
7. Pistons - High-compression, low-friction, custom pistons
8. Inlet Valves - Lightened inlet valves
9. Intake Manifold - Custom tuning, single-port type.
10. Throttle Body - 62 mm (2.4 in) wide-mouth throttle body.
11. Inlet Valve Springs - High-lift, flat-surfaced, dual-layered spring
12. Port Buffing done by hand. For 98 Spec port buffing is done by machine
13. Fastening of Connecting Rod done with micrometer.
14. 98 Spec engine has stainless steel 4-1 exhaust manifold to increase torque

USDM B18C1

VTEC
Found in:
- 1994-2001 USDM Integra GS-R (DC2/DB8)
  - Displacement: 1,797 cc (109.7 cu in)
  - Compression: 10.0:1
  - Bore: 81 mm (3.2 in)
  - Stroke: 87.2 mm (3.4 in)
  - Rod Length: 137.9 mm (5.4 in)
  - Rod/Stroke Ratio: 1.58
  - Power: 170 hp (127 kW) @ 7600 rpm
  - Torque: 128 lb⋅ft (174 N⋅m) @ 6200 rpm
  - Redline: 8100 rpm (Fuel cut-off @ 8200 rpm)
  - VTEC Engagement @ 4400 rpm
  - VCIS Engagement @ 6000 rpm
  - Transmission: Y80(No LSD) 5-Speed Manual Transaxle

B18C3

VTEC
Found in:
- 1995-1998 Honda Integra Type R
Power: ^{[convert: precision too large]} @ 8200 rpm

B18C4

VTEC
Found in:
- 1996-2000 UK Civic 1.8i VTi 5-door Hatch (MB6)
- 1996-2000 UK Civic 1.8i VTi-S (Limited Edition) 5-door Hatch (MB6)
- 1996-2000 UK Civic Aerodeck 1.8i VTi 5-door Wagon (MC2)
- 1998-1999 EU Civic Aerodeck 1.8i VTi 5-door Wagon (MC2)
- 1998-1999 EU Civic 1.8i VTi 5-door Hatch (MB6)
Displacement: 1,797 cc (109.7 cu in)
VTEC engagement@4,300 rpm
IAB open@5,750 rpm
Compression: 10.0:1
Power: 169 hp (126 kW) @ 7600 rpm & 128 lb⋅ft (174 N⋅m) @ 6200 rpm
Limit: 8,100 rpm
Transmission: S9B with helical (NOT TORSEN) LSD. (same as s80 LSD)
0/100 km/h : 7.9 seconds (8.5 Aerodeck)

B18C5

VTEC
Found in: USDM DC2 Acura Integra Type-R (Integra Type-R)
- 1997-2002 Integra Type-R (Note:1999 model CDM only)

Displacement: 1,797 cc (109.7 cu in)
Compression: 10.6:1
Bore: 81 mm (3.2 in)
Stroke: 87.2 mm (3.4 in)
Rod Length: 137.9 mm (5.4 in)
Rod/Stroke Ratio: 1.58
Power: 197 hp (147 kW) @ 7800 rpm & 131 ft⋅lbf (178 N⋅m) @ 7300 rpm
Redline: 8400 rpm (Fuel cut-off @ 8500 rpm)
VTEC Engagement @ 5,700 rpm
Transmission: S80 w/LSD

B18C6

VTEC
Found in:
- 1998-2001 Honda Integra UK and Euro Spec Type R
Type: 1.8 liter 16v DOHC 4 cylinder in-line
Displacement: 1,797 cc (109.7 cu in)
Compression: 11.1:1
Air intake diameter: 62 mm (2.4 in)
Bore: 81 mm (3.2 in)
Stroke: 87.2 mm (3.4 in)
Rod Length: 137.9 mm (5.4 in)
Rod/Stroke Ratio: 1.58
Power: 190HP (140 kW) @ 7900 rpm & 131 lb⋅ft (178 N⋅m) @ 7300 rpm
Redline: 8400 rpm
Rev-limiter: 8700 rpm
VTEC engagement: 5900 rpm
Transmission: S80 w/LSD

B18C7

VTEC
Found in:
- 1999 - 2001 Honda Integra Type R (Australia)
Power: 190 PS (140 kW; 187 hp) @ 8200 rpm & 127 lb⋅ft (172 N⋅m) @ 7500 rpm

B20

B20B

1996-1998 specs
NON-VTEC
Found in: USDM and JDM Honda CR-V, JDM Orthia, Stepwgn, S-MX
Displacement: 1,973 cc (120.4 cu in)
Power: 126 hp (94 kW)) @ 5400 rpm
Torque: 133 ft⋅lbf (180 N⋅m) @ 4300 rpm
Rod length: 137 mm (5.4 in)
Compression: 8.8:1 or 9.2:1
Bore: 84 mm (3.3 in)
Stroke: 89 mm (3.5 in)
Redline: 6300 rpm

B20B/B20Z

1999 - 2001 specs
NON-VTEC
Found in: USDM CRV as a B20Z, CR-V and Honda Orthia as a B20B
Displacement: 1,973 cc (120.4 cu in)
Power: 146 hp (109 kW) @ 6200 rpm
Torque: 133 lb⋅ft (180 N⋅m) @ 4500 rpm
Rod length: 137 mm (5.4 in)
Compression: 9.6:1
Bore: 84 mm (3.3 in)
Stroke: 89 mm (3.5 in)
Redline: 6700 rpm

B20A/B21A

The B20A3 and B20A5 are the predecessor to the B family. All B-series engines were based from the B20A, but most engine components are not compatible. For more information, refer to the F1-series Honda race car that used a B20A engine. Also see Honda B20A engine.

B Series Transmissions

Note: All (1990 up, non prelude) B series Transmissions are interchangeable. YS1 casing can take S80 Internals or a hydraulic conversion kit can be used to operate hydraulic transmissions in cable operated models however a1/s1/j1/y1 internals do not swap into the later model YS1 or hydraulic casings due to different shaft diameters.

J1/S1

Found in: Integra XSI/RSI (DA6)
Type: Cable
1st: 3.25
2nd: 2.052
3rd: 1.416
4th: 1.103
5th: 0.906
R: 3.000

FD: 4.400

A1/S1/YS1

Found in: 1990-93 USDM Integra LS/RS/GS (DA)
Type:cable
1st: 3.230
2nd: 1.901
3rd: 1.269
4th: 0.966
5th: 0.742
R: 3.000

FD: 4.266

Y1

Found in: CRX/Civic (optional LSD)
Type: Cable
1st: 3.166
2nd: 2.052
3rd: 1.416
4th: 1.102
5th: 0.870
R: 3.000

FD: 4.266

YS1

Found in: Integra 92-93 XSI/RSI (DA6, DA9)
Type: Cable
1st: 3.307
2nd: 2.999
3rd: 1.458
4th: 1.107
5th: 0.880
R: 3.000

FD: 4.400

S80

Found in: Integra Type R 98+ (LSD)
Type: Hydraulic
1st: 3.231
2nd: 2.105
3rd: 1.458
4th: 1.034
5th: 0.787
R: 3.000

FD: 4.785

=

4th: 1.034
5th: 0.787
R: 3.000

FD: 4.400

S9B

Found in: EDM UKDM MB6 (LSD) Helical LSD (same as S80)
Type: Hydraulic
1st: 3.230
2nd: 1.900
3rd: 1.360
4th: 1.034
5th: 0.848
R: 3.000

FD: 4.267

Y21/Y80/S80/S4C

Found in:
- JDM 96-97 Integra R(LSD)
- JDM Civic R [EK9](LSD)
- JDM Civic SiR [EK4, EG6]
- JDM CR-X DEL SOL SIR (EG2)(optional LSD)
- USDM DEL SOL VTEC (EG2)(OPTIONAL LSD)
Type: Hydraulic
1st: 3.230
2nd: 2.105
3rd: 1.458
4th: 1.107
5th: 0.848
R: 3.000

FD: 4.400

B16