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Honda Civic Type R (EK9) : Cars

Pictures of the Old Civic Type R. This was a 1.6 VTEC and used the B16B Honda engine producing 185ps @ 8300rpm. Not ever offically imported into either Europe or USA, some JDM models are seen in the UK (occasionally). Check out the Best Motoring video, battles @ 10,000rpm

About

This is a copy (changed to reformat the code and make easier to use) of the page from http://www.geocities.com/nofearirc/ek9.html

Index

General stats for EK9 Honda Civic Type-R

Honda EK9 Civic Type R
Length / Width / Height (mm) 4185 / 1695 /1360
Minimum Ground Clearance (mm) 135
Curb weight (kg) 1090
Displacement (cc) 1595
Horsepower (PS/rpm) 185 / 8200
Torque (KGM/rpm) 16.3 /7500

Detailed EK-9 specs

Performance figures for JDM Honda Civic Type-R

Have you ever wondered how fast the Honda Civic Type-R is in a straightline ? In the May 1998 issue of UK's Performance Car, a true JDM Honda Civic Type-R was tested in a special hot-hatches feature. The figures attained will send shivers down any of our competitor's spines.

A listing of some of the critical standing acceleration numbers are as follow:

Distance Time
0-60mph : 5.7 seconds
0-100mph: 17.5 seconds
0-1/4mi 15.0 seconds at 94mph

Top speed was not tested as all JDM Hondas are speed limited to around 180-190kph.

The Civic Type-R bested the UK version of the Honda Integra Type-R which has a derated 190hp engine (and similar quad headlights front facial of the US version). The UK's Integra Type-R obtained values of around 6.2seconds for the 0-60mph dash but a faster 17.1 seconds for the 0-100mph dash. However, the Integra Type-R was not fully run-in at the time of its test.

Highlights of B16B 98 Spec R compared to B16A

In order to increase the power output by 15 hp, and the max RPM by 200RPM, the engine goes through many upgrades. It should be noted that the B18C spec.R's cylinder block is used for its endurance.

The translations for the numbered labels in the diagram are:

  1. Cylinder Head - Complete port & polish
  2. Exhaust Valve Spring - High-lift, dual-layered spring
  3. Sparkplug - High-heat-type #7 platinum plug
  4. Pistons - High-compression, low-friction, custom pistons
  5. Connecting Rod - High-output, high-durability, lightened, custom conrod
  6. Engine Stiffener - Aluminum die-cast, high-durability, one-piece type
  7. Crankshaft - Full-balancer, 8-weight, high-output, custom crankshaft
  8. Inlet Valves - Lightened inlet valves
  9. Inlet Valve Springs - High-lift, flat-surfaced, dual-layered spring
  10. Camshaft - Wide-angled, high-lift, high-durability camshaft
  11. Intake Manifold - High-RPM type.

Engine specifications between B16A and B16B.

Engine Type B16A B16B 98 Spec.R
Maximum Output 170ps/7800rpm 185ps/8200rpm
Maximum Torque 16.0kg-m/7300rpm 16.3kg-m/7500rpm
Bore x Stroke 81.0x77.4mm <- same
Displacement 1595cc <- same
Compression 10.4 10.8
Maximum RPM 8000rpm 8400rpm
Valve Timing
at 1mm lift
IN Open/Close BTDC15/ABDC45 BTDC18/ABDC45
EX Open/Close BBDC40/ATDC7 BBDC45/ATDC10
Valve Lift IN 10.7mm, EX 9.4mm IN 11.5mm, EX 10.5mm
Inlet Valve Diamter 33mm x 2mm <- same
Spark Plug Type Heat Rate #6 Heat Rate #7 platinum
Throttle Bore Diameter 60mm <- same
Intake Manifold Single pipe sideflow <- same
Air Intake Diameter 65mm <- same
Exhaust Manifold 4-to-2 <- same
Exhaust Pipe Diameter 48.6-50.8mm 57.2mm
Silencer Flow Capacity 98liter/sec 115liter/sec

The camshaft profiles (wild cam) change from B16A 160ps to 170ps and finally to B16B are :

Cam Profile B16A 160ps B16A 170ps B16B 98R
Max Lift (IN/EX) 10.4/9.4 10.7/9.4 11.5/10.5
Open Timing (IN/EX) BTDC 10/BBDC 40 BTDC 15/BBDC 40 BTDC 18/BBDC 45
Close Timing (IN/EX) ABDC 40/ATDC 5 ABDC 45/ATDC 7 BTDC 45/ATDC 10

Different pistons are responsible for the compression ratio increases between 160ps & 170ps B16A and the 10.8 ratio for B16B. Readily apparent is the relatively modest change in piston top between B16A 160ps and B16A 170ps for the 10.2 to 10.4 change. However, the radically different piston top for B16B is very clear from the picture. The increase in compression ratio between B16B from B16A is 0.4.

The cut-outs on the piston top to accomodate for valve lift are basically the same between all three piston. This could meant that B16B camshafts can be installed into both 160ps and 170ps B16A without the need to change to B16B pistons.

On B16B, the inlet ports are manually ported to increase air-flow. The exhaust ports are identical to B16A.
B16B intake valve seats are at a different angle to B16A, 45 degrees vs 60 degrees. The intake valves are also different, being lighter and having a thinner valve stem.


On the left are the power curves for B16A 170ps versus B16B. Note the big gain in power after 6000rpm, the VTEC switch-over point between mild and wild cam profiles. The gain at extreme high rpms is readily apparent on the curves.

Various individual specifications for B16B can teach us about the feasibility of various modifications to B16A. For eg, the throttle bore diameter for B16B is identical to B16A at 60mm. This means that enlarged throttle bodies for B16A might not be an optimal mod or that a compromise in power delivery might result, eg loss of low-end power in return for gain in high-end power. Note that B16B has identical low and mid range power as B16A.

As with B18C Spec R, the wonder of B16B is the assurance of a 15 to 25ps gain in power on a B16A provided the tuning done by Honda can be completely replicated. Nevertheless even if only a portion can be duplicated, combining with properly designed aftermarket exhaust, headers, and intake could still potentially realize this 15ps gain. B16B engine parts are available from Honda and with care, most of them can be used on B16A for good power gains.

Honda Gearbox Ratios

The table below details the gearbox ratios that can be found in all of the different JDM (Japan Domestic Market) B series transmissions. It also details whether or not the transmission is available with an LSD (limited slip differential).

JDM Honda Gearbox Ratios
Code S80 Y21/Y80/S80/S4C S80/Y80 Y1 YS1 S1/J1
Car JDM Integra Type R 98+ (LSD) JDM 96-97 Integra R (LSD)
JDM Civic R [EK9] (LSD)
JDM Civic SiR [EK4, EG6] (optional LSD)
JDM SiR-G (optional LSD) JDM CRX/Civic SiR [EF8, EF9] (optional LSD) JDM 92-93 XSi Integra (optional LSD) JDM 90-91 Integra XSi [DA-6]
Type Hydraulic Hydraulic Hydraulic Cable Cable Cable
1st 3.230 3.230 3.230 3.166 3.307 3.230
2nd 2.105 2.105 1.900 2.052 2.105 2.105
3rd 1.458 1.458 1.360 1.416 1.458 1.458
4th 1.034 1.107 1.034 1.103 1.107 1.107
5th 0.787 0.848 0.787 0.870 0.880 0.848
Reverse 3.000 3.000 3.000 3.000 3.000 3.000
Final Drive 4.785 4.400 4.400 4.266 4.400 4.400

You can use any B-series transmission (cable or hydraulic) with any B-series block as long as you make sure that you use the correct clutch, flywheel, and intermediate shaft.

B Series Engine Specs

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)
Civic
92 SiR
(E-EG6)
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 mm
Weight (kg) 1050 1120 1100 1060   1100 1130 1040 1090
Transmission  S80 (S4C) Y2 Y21 S80 (S4C) S80 (S4C) Y80 (S4C) Y80 (S4C) Y1 (S4C) Y2 (S4C)
1st 3.230 3.230 3.307 3.230 3.230 3.230 3.230 3.166 3.307
2nd 2.105 2.105 2.105 2.105 2.105 1.900 1.900 2.052 2.105
3rd 1.458 1.458 1.458 1.458 1.458 1.360 1.360 1.416 1.458
4th 1.107 1.107 1.107 1.107 1.034 1.034 1.034 1.103 1.107
5th 0.848 0.848 0.848 0.848 0.787 0.787 0.787 0.870 0.848
R 3.000 3.000 3.000 3.000 3.000 3.000 3.000 3.000 3.000
Final Drive 4.40 4.40 4.40 4.40 4.785 4.40 4.40 4.266 4.40
LSD Helical LSD None None Helical LSD Helical LSD None None Opt. Helical LSD Opt. Helical LSD

 

B Series Engine Specifications (cont.)
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 

Cam Specs (B - Series)

Cam Specs (B - Series)
Manufacturer Intake
(lift in mm)

Intake
(duration @ 1mm)

Exaust
(lift in mm)
Exaust
(duration @ 1mm)
Toda Spec A 11.6 250 11.2 24
Toda Spec B 12 255 12 245
Toda Spec C 12.5 255 12.5 255
Jun Type 1 10.9 265.3 10 268
Jun Type 2 12.0 266.6 10.9 265.3
Jun Type 3 12.0 265.3 11.5 265.3
Spoon Sports 11.53 256 11.13 245
Skunk 2 stage1 11.58 252 10.9 249
Skunk2 stage 2 12.3 266 11.8 262
Skunk2 stage 3 12.8 273 11.5 273
Crower 63400 10.72 234 9.6 234
Crower 63401 11.38 249 10.54 240
Crower 63401T 11.81 230

11.3

226
Crower 63402 11.84 258 11.84 251
Crower 63402A 11.84 246 11.81 239
Crower 63403 12.04 267 11.84 257
Integra Type R 11.5 240 10.5 235
Civic Type R 11.5 243 10.5 235

more cams info

Piston CRs'

Engine-Pistion CR
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
Piston type 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

 

Header results

Header Results: Individual Dyno Results
Header Result (hp) Result (torque) View
JDM Jun 186 138 View
JDM Spoon 187 138 View
JDM ITR 4-1 185 137 View
Mugan mod. hytech 187 136 View
DC JDM 4-1 187 137 View
Comptech 4-2-1 187 137 View
JDM Toda 190 137 View
JDM Mugen 186 135 View
SMSP header 190 136 View
Type 1 186 137 View
2.5" exhaust/test pipe 180 131 View
Stock 176 119 View

Honda ECU Diagnostic Trouble Codes B16a
Diagnostic Trouble Code (DTC) System Indicated
0 Engine Control Module (ECM)
1 Heated Oxygen Sensor (HO2S)
3 Manifold Absolute Pressure (MAP Sensor)
4 Crankshaft Position (CKP Sensor)
6 Engine Coolant Temperature (ECT Sensor)
7 Throttle Position (TP Sensor)
8 Top Dead Center Position (TDC Sensor)
9 No. 1 Cylinder Position (CYP Sensor)
10 Intake Air Temperature (IAT Sensor)
13 Barometric Pressure (BARO Sensor)
14 Idle Air Control (IAC Valve)
15 Ignition Output Signal
16 Fuel Injector
17 Vehicle Speed Sensor (VSS)
20 Electrical Load Detector (ELD)
21 Variable Valve Timing & Valve Lift Electronic Control Solenoid Valve (VTEC Solenoid Valve)
22 Variable Valve Timing & Valve Lift Electronic Control Pressure Switch (VTEC Pressure Switch)
23 Knock Sensor (KS)
30 A/T FI Signal A
31 A/T FI Signal B
41 Heated Oxygen Sensor (HO2S) Heater
43 Fuel Supply System

Obtaining ECU Error Codes

To determine if your ECU has an error code:

  1. Locate the ECU under the carpet in the passenger foot well.
  2. Find the red LED in the center of the ECU.
  3. Turn the ignition to ON. The red LED should flash once when this happens to indicate that the ECU has power.
  4. If there are no further flashes then there are no error codes.
  5. If there are further flashes then there are one or more error codes.

Honda ECU error codes

1 Oxygen Sensor "A" (Primary) defective circuit or unplugged / defective sensor

2 Oxygen Sensor "B" defective circuit or unplugged / defective sensor

3 MAP Sensor (Manifold Absolute Pressure) defective circuit or unplugged / defective sensor

4 CKP Sensor (Crankshaft Position Sensor) defective circuit or unplugged / defective sensor

5 MAP Sensor (Manifold Absolute Pressure) mechanical problem / disconnected piping

6 ECT Sensor (Engine Coolant Temperature) defective circuit or unplugged / defective sensor

7 TP Sensor (Throttle Position) defective circuit or unplugged / defective sensor

8 TDC Sensor (Top Dead Center) defective circuit or unplugged / defective sensor

9 CYP Sensor (Cylinder) defective circuit or unplugged / defective sensor

10 IAT Sensor (Intake Air Temperature) defective circuit or unplugged / defective sensor

12 EGR Lift Sensor (Exhaust Gas Recirculation) defective circuit or unplugged / defective sensor

13 BARO Sensor (Atmospheric Pressure) defective circuit or unplugged / defective sensor

14 IAC Valve (Idle Air Control) defective circuit or unplugged / defective sensor

15 Ignition Output Signal missing or defective ignition output signal

16 Fuel Injector System defective circuit or unplugged / defective fuel injector

17 VSS (Vehicle Speed Sensor) defective circuit or unplugged / defective sensor

19 Automatic Transmission Lock Up Control Solenoid Valve defective circuit or unplugged / defective solenoid valve

20 Electrical Load Detector defective circuit or unplugged / defective sensor

21 VTEC Solenoid Valve defective circuit or unplugged / defective solenoid valve

22 VTEC Oil Pressure Switch defective circuit or unplugged / defective oil pressure switch

23 KS (Knock Sensor) defective circuit or unplugged / defective sensor

30 Automatic Transmission Signal: "A" / SEAF / SEFA / TMA or TMB defective circuit or unplugged / defective sensor

31 Automatic Transmission Signal "B" defective circuit or unplugged / defective sensor

41 Primary Oxygen Sensor - Heater circuit malfunction

43 Fuel Supply System defective or malfunctioning fuel supply system

45 System Too Lean or Too Rich malfunction in the fuel monitoring systems

48 LAF Sensor (Lean Air Fuel) defective circuit or unplugged / defective sensor

54 CKF Sensor (Crankshaft Speed Fluctuation) defective circuit or unplugged / defective sensor

58 TDC Sensor 2 (Top Dead Center) defective circuit or unplugged / defective sensor

61 Oxygen Sensor, Heated - Sensor 1 (Primary) high voltage, low voltage, or slow response

63 Oxygen Sensor, Heated - Sensor 2 (Secondary) high voltage, low voltage, or slow response

65 Oxygen Sensor Heater (Secondary) malfunctioning or defective oxygen sensor heater

67 Catalyst system Efficiency Below Threshold malfunctioning or defective catalyst system

70 Automatic Transmission malfunction with the automatic transmission controls

71 Cylinder 1 Misfire or a Random Misfire a condition is present that is creating a cylinder misfire

72 Cylinder 2 Misfire or a Random Misfire a condition is present that is creating a cylinder misfire

73 Cylinder 3 Misfire or a Random Misfire a condition is present that is creating a cylinder misfire

74 Cylinder 4 Misfire or a Random Misfire a condition is present that is creating a cylinder misfire

75 Cylinder 5 Misfire or a Random Misfire a condition is present that is creating a cylinder misfire

76 Cylinder 6 Misfire or a Random Misfire a condition is present that is creating a cylinder misfire

80 Exhaust Gas Recirculation insufficient flow detected

86 ECT Sensor (Engine Coolant Temperature) circuit range / performance problem

90 Evaporative Emission Control System leak detected in the fuel tank area

91 Fuel Tank Pressure Sensor low input

92 Evaporative Emission Control System insufficient purge flow

 

Honda B DOHC Piston Measurements

Engine & Piston Stamp

Compression Height

Dome Height Weight (g) 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)



Pictures