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B Series Engine Specifications
 

Civic
Type-R 98

(E-EK9)

Civic
SiR
(E-EK4)

Del-Sol CRX
(E-EG2)

Integra
Type-R 96/US
(JDM E-DC2/E-DB8)

Integra
Type-R 98
(JDM E-DC2/E-DB8)

Integra
SiR-G
SiR-II

Integra
GSR
(USA, E-DC2/E-DB8)

Civic/CRX
91 SiR 
(E-EF8/E-EF9)

C

Engine

B16B 
98 Spec-R

B16A6

B16A3/A4

B18C 
96 Spec-R

B18C 
98 Spec-R

B18C

B18C1

B16A

B16A

Displacement

1595

1595

1595

1797

1797

1797

1797

1595

1595

C.R.

10.8:1

10.4:1

10.4:1

11.1:1

11.1:1

10.6:1

10.0:1

10.2:1

10.4:1

Output 
Power (ps/rpm)

185/8200

170/7800

170/7800 
160/7800 
(US Del-Sol)

200/8100

200/8100

180/7600

170/7600 
(US GSR)

160/7600

170/7800

Torque (kgm/rpm)

16.3/7600

16.0/7300

16.0/7300

18.5/7500

18.5/7500

17.8/6200

17.8/6200

15.8/7300

16.0/7300

Detailed Engine Specs

Connecting rod bearing width

tetra-methyl lead coated crank
17.5 mm

19.5 mm

19.5 mm

tetra-methyl lead coated crank
17.5 mm

tetra-methyl lead coated crank
17.5 mm

tetra-methyl lead coated crank
17.5 mm

tetra-methyl lead coated crank
17.5 mm

19.5 mm

19.5 mm

Connecting 
rod

high chrome carbon steel

chrome 
carbon steel

chrome 
carbon steel

high chrome carbon steel

high chrome carbon steel

high chrome carbon steel

high chrome carbon steel

chrome 
carbon steel

chrome 
carbon steel

Piston

Molybdenum coated low friction

 

 

Molybdenum coated low friction

Molybdenum coated low friction

 

 

 

 

Block Height

270mm

263mm

263mm

270mm

270mm

270mm

270mm

263mm

263mm

Valve Specs(note that Honda measures valve timing/lift at 1mm of lift)

Intake 
(VTEC lobe)

open

close

valve lift

diameter

18 before TDC
45 after BDC
11.5 mm
33 mm

10 before TDC
40 after BDC
10.6 mm
33 mm

10 before TDC
40 after BDC
10.6 mm
33 mm

15 before TDC
45 after BDC
11.5 mm
33 mm

10 before TDC
40 after BDC
10.6 mm
33 mm

10 before TDC
40 after BDC
10.6 mm
33 mm

10 before TDC
40 after BDC
10.6 mm
33 mm

10 before TDC
40 after BDC
10.1 mm
33 mm

10 before TDC
40 after BDC

10.6 mm

33 mm

Exhaust 
(VTEC lobe)

open

close

valve lift

diameter

45 before BDC
10 after TDC
10.5 mm
28 mm

40 before BDC
7 after TDC
9.4 mm
28 mm

40 before BDC
7 after TDC
9.4 mm
28 mm

45 before BDC
10 after TDC
10.5 mm
28 mm

40 before BDC
7 after TDC
9.4 mm
28 mm

40 before BDC
7 after TDC
9.4 mm
28 mm

40 before BDC
7 after TDC
9.4 mm
28 mm

40 before BDC
7 after TDC
9.0 mm
28 mm

40 before BDC
7 after TDC

9.4 mm

28

Weight (kg)

1050

1120

1100

1060

 

1100

1130

1040

1090

 

 

Engine 

JDM B16A G1 (USA B16A3) 

JDM B16A G2 

JDM B16A G3 

JDM B16B 98 spec.R 

USA B17A 

USA B18C 

USA B18C spec.R 

JDM B18C 96 spec.R 

Type 

Water-cooled 4 stroke 

Same 

Same 

Same 

Same 

Same 

Same 

Same 

Cylinder Arrangement 

Inline 4 cylinder, transverse 

Same 

Same 

Same 

Same 

Same 

Same 

Same 

Block Height ** 

263 mm (10.354") 

Same 

Same 

270 mm 

Same?! 

270 mm (10.630") 

Same 

Same 

Bore x Stroke 

81.0 x 77.4 mm (3.19 x 3.05 in) 

Same 

Same 

Same 

81.0 x 81.4 mm (3.19 x 3.20 in) 

81.0 x 87.2 mm (3.19 x 3.43 in) 

Same 

Same 

Displacement 

1595 cc (97.3 cid) 

Same 

Same 

Same 

1678 cc (102.4 cid) 

1797 cc (109.6 cid) 

Same 

Same 

Compression Ratio 

10.2 

10.4 

10.4 

10.8 

9.7 

10.0 

10.6 

11.1 

Valve Train 

Belt driven, DOHC w/VTEC, 16 valves 

Same 

Same 

Same 

Same 

Same 

Same 

Same 

Maxinum Output 

160 ps @ 7600 rpm 

170 ps @ 7800 rpm 

170 ps @ 7800 rpm 

185 ps @ 8200 rpm 

160 hp @ 7600 rpm 

170 hp @ 7600 rpm 

195 hp @ 8000 rpm 

200 ps @ 8000 rpm 

Maxinum Torque 

111 lbs-ft @ 7000 rpm 
(15.5 kgm @ 7000) 

16.0 kgm @ 7300 rpm 

16.0 @ 7300 rpm 

16.3 kgm @ 7500 rpm 

117 lbs-ft @ 7000 rpm 

128 lbs-ft @ 6200 rpm 

130 lbs-ft @ 7500 rpm 

18.5 kgm @ 7500 rpm 

Specific Output (output/liter) 

100 ps/liter 

106.3 ps/liter 

106.3 ps/liter 

115.6 ps/liter 

94.1 hp/liter 

94.4 hp/liter 

108.3 hp/liter 

111.1 ps/liter 

Engine 

JDM B16A G1 (USA B16A3) 

JDM B16A G2 

JDM B16A G3 

JDM B16B 98 spec.R 

USA B17A 

USA B18C 

USA B18C spec.R 

JDM B18C 96 spec.R 

Intake/Exhaust Valve Size 

33.0 mm/28 mm 

Same 

Same 

Same 

Same 

Same 

Same 

Same 

Intake opening (BTDC) 

10 

15 

15 

18 

10 

10 

15 

15 

Intake closing (ABDC) 

40 

45 

45 

45 

40 

40 

45 

45 

Intake duration 

230 

240 

240 

243 

230 

230 

240 

240 

Exhaust opening (BBDC) 

40 

40 

40 

45 

40 

40 

45 

45 

Exhaust closing (ATDC) 

10 

10 

10 

Exhaust duration 

227 

227 

227 

235 

227 

227 

235 

235 

Overlap 

17 

22 

22 

28 

17 

17 

25 

25 

Intake valve lift (mm) 

10.6 (.417") 

10.7 (.421") 

10.7 (.421") 

11.5 (.453") 

10.6 (.417") 

10.6 (.417") 

11.5 (.453") 

11.5 (.453") 

Exhaust valve lift (mm) 

9.4 (.370") 

9.4 (.370") 

9.4 (.370") 

10.5 (.413") 

9.4 (.370") 

9.4 (.370") 

10.5 (.413") 

10.5 (.413") 

Intake/Exhaust Valve Springs 

Dual/Single 

Dual/Single 

Dual/Single 

Dual/Dual 

Dual/Single 

Dual/Single 

Dual/Dual 

Dual/Dual 

Engines stroke/rod/sizes

B16A:
Rod length: 134 mm
Stroke: 77 mm
R/S: 1.74:1
Displacement: 1587.12 cc

B17A:
rod length: 131.87 mm
Stroke: 81.4 mm
R/S: 1.62:1
Displacement: 1677.81 cc


B18A-B,B20B-Z:
Rod length: 137mm
Stroke: 89mm
R/S: 1.54:1
Displacement: 1834.47 cc

B18C:
Rod length: 137.9 mm
Stroke: 87.2 mm
R/S: 1.58:1
Displacement: 1797.36 cc


B20A:
Rod length: 141.7-142.75 mm
Stroke: 95 mm
R/S: 1.49-1.50:1
Displacement: 1958.14-2056.03 cc

 

..................................................................................................................................................................

 

Engine-Piston

B16A-PR3

B16A-P30 (JDM)

B17A1-P61

B18C1 P72-A0 (US)

B18C1 P72-00 (JDM)

B18C5-P73-A0 (US)

B18C5-P73-00 (JDM)

B16B-PCT (JDM)

B18B

Compression Ratio

10.2

10.4

9.7

10.0

10.6

10.6

11.1

10.8

NA

 

Approximate Compression Ratio for Engine-Piston Mixes

Engine

Piston

 

B16B or Civic Type-R

P73 (US) Integra Type-R

P73 (Japan Spec) Integra Type-R

B16A

11.1

10.4

10.7

B17A

11.4

10.6

10.8

B18C w/GSR Head

11.8

10.9

11.4

B18C w/Type-R or B16 Head

11.6

10.6

11.1

 

Approximate Piston Measurements

Engine-Piston

B16A-PR3

B16B-PCTX

B17-P61

B18B-PR4

B18C-P72

B18C5-P73

B20B

H22A1

Rod Length

5.290

NA

5.208

5.394

5.429

5.429

NA

5.63

Stroke

3.031

NA

3.205

3.504

3.433

3.433

NA

3.571

Bore Size

3.189 (81mm)

3.189 (81mm)

3.189 (81mm)

3.189 (81mm)

3.189 (81mm)

3.189 (81mm)

3.307 (84mm)

3.425

Head C.C.

42.7

42.7

42.7

45

41.6

42.7

 

53.8

Compression Height

1.180"

1.210"

NA

1.180"

1.183"

1.190"

1.165"

NA

Dome Height

.098"

.253"

NA

-.055"

.000"

.070"

-.035"

NA

Weight

299g

327g

NA

280g

305g

310g

312g

NA

 

Honda B DOHC Piston Measurements

Engine &
Piston Stamp

Compression
Height

Dome
Height

Weight
(grams)

Bore
Size

B16A PR3

1.180"

0.098"

299

3.188" (81.0 mm)

B16B PCTX

1.210"

0.253"

327

3.188" (81.0 mm)

B17A P61

       

B18B PR4

1.180"

-0.055"

280

3.188" (81.0 mm)

B18C P72

1.183"

0.000"

305

3.188" (81.0 mm)

B18C5 P73

1.190"

0.070"

310

3.188" (81.0 mm)

B20B

1.165"

-0.035"

312

3.307" (84.0 mm)

 

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