Rep Power: 691

Chassis Codes:

BA1 B20A 1985 - 1987
BA2 B20A 1985 - 1987 EDM Prelude
BA3 A20A 1985 - 1987 UKDM Prelude
BA4 B20A 1987 - 1991
BA5 B20A 1987 - 1991 4WS
BA8 F22B 1991
BA9 F22B 1991
BB1 H22A 1991
BB2 H23A 1992 - 1996
BB3 F20A 1992 - 1996
BB4 H22A 1991
BB5 F22B 1996
BB6 H22A 1996
BB7 F22B 1996
BB8 H22A 1996
AB ES 1982 - 1987
SN EK 1978 - 1982 [1983]
SN EK 1978 - 1982 [1983]

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Engine Block Numbers

B20A3 Honda Prelude 2.0 S 1990-1991
B20A5 Honda Prelude 2.0 Si 1990-1991
B20A5 Honda Prelude Si 1988-1989
B20A5 Honda Prelude Si 1988-1989
B21A1 Honda Prelude Si 1990-1991
F22 Honda Prelude Si 1992-1996
F22A1 Honda Prelude S 1992-1996
H22 Honda Prelude VTEC 1992-1996
H22A Honda Prelude SiR (JDM) 1997-2001
H22A Honda Prelude 1999-2001
H22A Honda Prelude Type S (JDM) 1997-2001
H22A1 Honda Prelude 1997-1998
H22A1 Honda Prelude VTEC 1994-1996
H23 Honda Prelude Type S (JDM) 1993-1995
H23A1 Honda Prelude SE/Si 1992-1996

Engine HP Ratings
B20A5 2.0L DOHC non-VTEC 87-91 Prelude 2.0Si 135hp
B21A1 2.1L DOHC non-VTEC 90-91 Prelude Si 145hp
F22A1 2.2L USDM non-VTEC 92-96 Prelude S 90-93 Accord LX/EX
130hp-135hp
H22A1 2.2L USDM DOHC VTEC 92-96 Prelude VTEC 190hp
H22A4 2.2L DOHC VTEC 97-01 Prelude VTEC/SH 97-98: 195hp 99-01: 200hp
H22A 2.2L JDM DOHC VTEC 92+ Prelude Type-S, 97+ Prelude SiRS Spec 220ps
H23A1 2.3L USDM DOHC non-VTEC Prelude Si 160hp

ECU Types and Numbers
P13 : 93-95 OBD-1 Prelude Vtec
P14 : 93-95 OBD-1 Prelude Si (non Vtec)
P5P : 97-00 OBD-2 Prelude Type-S (JDM ECU)

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Prelude weights.

1988 Honda Prelude 4WS MT 2685
1988 Honda Prelude S MT 2522
1988 Honda Prelude Si MT 2665
1989 Honda Prelude 4WS MT 2741
1989 Honda Prelude S MT 2571
1989 Honda Prelude Si MT 2712
1990 Honda Prelude 2.0S MT 2566
1990 Honda Prelude 2.0Si MT 2639
1990 Honda Prelude 4WS MT 2690
1990 Honda Prelude Si MT 2690
1991 Honda Prelude 2.0Si MT 2639
1991 Honda Prelude 4WS MT 2712
1991 Honda Prelude Si MT 2690
1992 Honda Prelude S MT 2809
1992 Honda Prelude S AT 2862
1992 Honda Prelude Si MT 2866
1992 Honda Prelude Si AT 2921
1993 Honda Prelude S MT 2809
1993 Honda Prelude S AT 2862
1993 Honda Prelude Si MT 2866
1993 Honda Prelude Si AT 2921
1993 Honda Prelude VTEC MT 2932
1994 Honda Prelude S MT 2809
1994 Honda Prelude S AT 2862
1994 Honda Prelude Si MT 2866
1994 Honda Prelude Si AT 2921
1994 Honda Prelude VTEC MT 2932
1995 Honda Prelude S MT 2809
1995 Honda Prelude S AT 2862
1995 Honda Prelude Si MT 2866
1995 Honda Prelude Si AT 2921
1995 Honda Prelude VTEC MT 2932
1996 Honda Prelude S MT 2809
1996 Honda Prelude S AT 2862
1996 Honda Prelude Si MT 2866
1996 Honda Prelude Si AT 2921
1996 Honda Prelude VTEC MT 2932
1997 Honda Prelude Base MT 3009
1997 Honda Prelude Base AT 2954
1998 Honda Prelude Base MT 3009
1998 Honda Prelude Base AT 2954
1998 Honda Prelude Type SH MT 3042
1999 Honda Prelude Base MT 3009
1999 Honda Prelude Base AT 2954
1999 Honda Prelude Type SH MT 3042
2000 Honda Prelude Base MT 3009
2000 Honda Prelude Base AT 2954
2000 Honda Prelude Type SH MT 3042
2001 Honda Prelude Base AT 2954
2001 Honda Prelude Type SH MT 3042

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Injector Specifications

VEHICLE Injector Types Flow Rate
1988-91 Civic si/crx si Peak and hold 240cc
1992-95 Civic si/ex Saturated 240cc
1996-00 Civic Saturated 240cc
1990-91 Integra Peak and hold 240cc
1992-00 Integra ls/gsr/type R Saturated 240cc
1992-96 Prelude non-vtec Peak and hold 240cc
1992-96 Prelude VTEC Peak and hold 345cc
1997-up Prelude VTEC Saturated 280cc
1991-up Sentra se-r/200sx se-r Saturated 265cc
1991-up MR2 Turbo Peak and hold 440cc
1988-91 Supra Turbo Peak and hold 550cc
1993-up Supra non -Turbo Saturated 315cc
1993-up Supra Twin Turbo Peak and hold 550cc
2000-up Celica GT-S Saturated 310cc
1990-up Miata 1.6 liter Saturated 215cc
1993-up Miata 1.8 liter Saturated 240cc
1993-up RX-7 Twin Turbo Saturated 550cc/850cc
1990-96 300zx Twin Turbo Saturated 370cc
1991-up 3000GT VR-4 Peak and hold 350cc
1989-up Eclipse Turbo Peak and hold 450cc


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ENGINE = engine code
HP = factory horsepower rating
SIZE = engine size in c.c. cubic centimeters
BOR = standard engine bore in inches
STRK = engine stroke in inches
ROD = engine rod length center to center in inches
C-H = compression height of piston in inches
PIN = wrist pin outside diameter in millimeters
H-D = cylinder head volume in c.c. cubic centimeters
BEW = connecting rod big end width in inches
BEB = connecting rod big end housing bore diameter
D = double overhead cam
S = single overhead cam
N = non v-tec
V = v-tec 1 millimeter = .03937 inches
DECK= deck height in inches
R/S= rod to stroke ratio
VA= valve angles in degrees
VS= valve sizes intake/exhaust diameter in millimeters


ENGINE HP SIZE DECK BORE STRK ROD C-H PIN H-D BEW BEB
H22A1 190 2200 8.655 3.425 3.571 5.630 1.222 22 53.8 .935 51
H23A1 160 2300 8.655 3.425 3.740 5.571 1.203 22 50 .935 51

R/S VA VS D-S V-N MODEL
h22 1.58 29 35/30 D-V 92-97
h23 1.49 25 34/29 D-N 92-96

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4th Gen
F22/S- H23a/Si - H22a/VTEC
--M2L5----M2S4----M2F4
1 - 3.307 - 3.307 - 3.307
2 - 1.810 - 1.857 - 1.950
3 - 1.230 - 1.320 - 1.360
4 - 0.903 - 1.034 - 1.071
5 - 0.705 - 0.812 - 0.870
FD 4.062 - 4.266 - 4.266
*Above info taken from USDM Helms manual.

M2B4 (JDM LSD) M2J5 (JDM) M2A4 (JDM)

1. 3.307 1. 3.307 1. 3.307
2. 1.950 2. 1.810 2. 1.950
3. 1.360 3. 1.269 3. 1.160
4. 1.034 4. 0.966 4. 1.034
5. 0.787 5. 0.787 5. 0.787
FD 4.266 FD 4.062 FD 4.266
*Above info taken from teardown and tooth counts.

5Gen:

1st 3.285
2nd 1.956
3rd 1.344
4th 1.034
5th 0.812
FD 4.266
*Above taken from USDM Helms manual.

Euro R H22A (t2w4)
1st - 3.285
2nd - 2.090
3rd - 1.481
4th - 1.071
5th - 0.812
FD - 4.266

Accord Type-R (u2Q7).
1st - 3.285
2nd - 2.090
3rd - 1.481
4th - 1.071
5th - 0.870
FD - 4.266
[Spec-s is 5th gen ratio with LSD]