Engine Components Specifications (Honda Civic 3)

General information

Working volume - see Part A

Number of cylinders - see Part A

Work order: 1 - 3 - 4 - 2

Engine Identification (the first 3 or 5 positions in the serial number)

EW1 - 1500 carburetor

EV1 - 1300 carburetor

EW3 — 1500 central injection

D15A2:

• CRX - 1500 carburetor
• hatchback, sedan and shuttle - 1300 carburetor

D15A3 — 1500 injection

D15B1 - 1500 two-point injection

D15B2 - 1500 two-point injection

D15B6 - 1500 multipoint injection

D15A6 - 1600 multipoint injection

Compression pressure (compression) in the cylinder (at 300 rpm and fully open throttle)

Denomination

Carburetor engines:

• only 1300 cm³ - 12 bar
• the rest - 11.5 bar

Injection engines:

• only Si - 11 bar
• the rest - 13 bar

Minimum value

Carburetor engines:

• only 1300 cm³ - 10 bar
• the rest - 9.5 bar

Injection engines:

• only Si - 9 bar
• the rest - 9.5 bar

Maximum pressure difference between cylinders is 2 bar

Fuel pressure at normal operating temperature (bar)

From 1984 to 1987

• idle speed - not less than 1.5
• 3000 rpm — 3.3 - 4.2

1988

• idle speed - not less than 1.7
• 3000 rpm — 4.2 - 4.9

Since 1989

• idle speed - not less than 0.7
• 3000 rpm - 3.5

Crankshaft and bearings (dimensions in mm)

Axial clearance:

• standard - 0.1-0.35
• limit - 0.45

Main bearing journal diameter:

• 1500 — 49,976 - 50,000
• 4WD, CRX Si, Civic 1600 — 54,976 - 55,000
• the rest - 49,976 - 50,000

Permissible taper and out-of-roundness of main journals:

• standard - 0.005
• limit - 0.010

Main bearing clearance (standard)

1300 and 1500 — 0.024 - 0.042

1988. (1.5 and 1.6 liters, except 4WD) — 0,024 - 0,042

1988. (4WD only):

• necks 1, 2, 4, 5 — 0.024-0.042
• neck 3 - 0.030-0.048

since 1989 (1.5 liters):

• necks 2, 3, 4 — 0.024-0.042
• necks 1, 5 — 0.018-0.036

since 1989 (1.6 liters):

• necks 1, 5 — 0.018-0.036
• necks 2, 4 — 0.024-0.042
• neck 3 - 0.030-0.048

Main bearing clearance (ultimate)

• from 1984 to 1987 - 0.007
• Since 1988 - 0.005

Crankpin diameter

• 1500 — 41.976-42,000
• 4WD, CRX Si, Civic 1600 — 44,976 - 45,000
• the rest - 37,976 - 38,000

Taper and out-of-roundness of the crank pin

Standard:

• from 1984 to 1987, from 1988 CRX - 44.976 - 45.000
• since 1988 Shuttle and Civic - 0.0025

Limit - 0.010

Clearance in connecting rod bearing

Standard - 0.020 - 0.038

Limit:

• from 1984 to 1987 - 0.07
• since 1988 - 0.05

Axial clearance connecting rod/crankshaft

• Standard - 0.15 - 0.30
• Limit - 0.40

Engine block

Plane warpage - 0.08

Cylinder diameter

From 1984 to 1987:

• standard - 74.00 - 74.02
• maximum - 74.10

Since 1988:

• standard - 75.00 - 75.02
• maximum - 75.07

Piston/cylinder clearance

Standard - 0.010 - 0.040

Limit:

• From 1984 to 1987 - 0.07
• since 1988 - 0.05

Permissible taper and out-of-roundness of the cylinder - 0.05

Pistons and rings

Diameter (16 mm and above skirt edge)

1984 and 1985:

• standard - 73.97 - 73.99
• maximum - 73.96

1986 and 1987:



CRX/CRX Si

• standard - 73.97 - 73.99
• maximum - 73.96

CRX HF

• standard - 73.958 - 73.99
• maximum - 73.95

Civic Std., OX, GL, Si

• standard - 73.97 - 73.99
• maximum - 73.96

1988 and 1989:

• standard - 74.98 - 74.99
• maximum - 74.97

Since 1990:

CRX/CRX Si. Shuttle, Civic

• standard - 74.98 - 74.99
• maximum - 74.97

CRX HF (8-valve engine)

• standard - 74.97 - 74.99
• extreme - not allowed

Lateral clearance in rings

Top ring:

• standard - 0.030 - 0.060
• limit - 0.13

Second ring:

• standard - 0.030 - 0.055
• limit - 0.13

Gap in the lock

From 1984 to 1987.

Top and second ring:

• standard - 0.15 - 0.35
• limit - 0.60

Oil scraper ring (1987 only 1300 engine with central injection):

• standard - 0.30 - 0.90
• limit - 1.1

Oil scraper ring (others):

• standard - 0.20-0.8
• limit - 0.9

1988.

Top ring:

• standard - 0.15 - 0.35
• limit - 0.60

Second ring:

• standard - 0.30 - 0.35
• limit - 0.60

Oil scraper ring:

• standard (only shuttle) — 0,20 - 0,60
• standard (others) - 0.20 - 0.80
• ultimate (only shuttle) — 0,70
• marginal (others) - 0.90

Since 1989. (except Shuttle)

Top ring

• standard - 0.15 - 0.30
• limit - 0.60

Second ring:

• standard - 0.30 - 0.45
• limit - 0.60

Oil scraper ring:

• standard - 0.20-0.8
• limit - 0.9

1990. (only shuttle)

Top ring:

• standard - 0.15 - 0.35
• limit - 0.60

Second ring (DX):

• standard - 0.15 - 0.35
• limit - 0.60

Second Ring (4WD):

• standard - 0.30 - 0.45
• limit - 0.60

Oil scraper ring:

• standard - 0.20 - 0.80
• limit - 0.9

Valves and springs

Valve stem diameter (from 1984 to 1987.)

Additional valve:

• standard - 6.572 - 6.587
• maximum - 6.54

Inlet valve:

• standard - 6.58 - 6.59
• maximum - 6.55

Exhaust valve:

• standard - 6.58 - 6.59
• limit - 6.52

Since 1988.

Inlet valve:

• standard - 5.48 - 5.49
• maximum - 5.45

Exhaust valve:

• standard - 5.45 - 5.46
• limit - 5.42

Valve guide clearance (from 1984 to 1987.)

Additional valve:

• standard - 0.023 - 0.058
• limit - 0.08

Inlet valve (1987 Civic only):

• standard - 0.04 - 0.10
• limit - 0.16

Inlet valve (others):

• standard - 0.02 - 0.05
• limit - 0.08

Exhaust valve (1987 Civic only):

• standard - 0.10 - 0.16
• limit - 0.22

Exhaust valve (others):

• standard - 0.05 - 0.08
• limit - 0.11

Since 1988.

Inlet valve:

• standard - 0.02 - 0.05
• limit - 0.08

Exhaust valve:

• standard - 0.05 - 0.08
• limit - 0.11

Installation height of valve springs

• Additional valve - 25.00
• Intake Valve: 1984 - 43.00
• Exhaust valve: 1984 - 43.00

Free length of springs (From 1984 to 1987)

Additional valve:

• standard - 31.73
• maximum - 31.1

Inner spring:

• standard - 44.02

Outer Spring (CRX HF (1985), Civic 1300):

• standard - 49.1
• maximum - 48.1

External spring (1986 CRX HF):

• standard - 43.15
• maximum - 42.1

Outer spring (CRX Si):

• standard - 47.45

Outer spring (others):

• standard - 47.6
• maximum - 46.6

Since 1988.

Inlet valve (8-valve CRX HF engine):

• standard - 51.46
• maximum - 50.62

Inlet valve (other):

• standard - 48.58
• maximum - 47.64

Exhaust valve (8-valve CRX HF engine):

• standard - 56.28
• maximum - 55.21

Exhaust valve (others):

• standard - 49.19
• maximum - 48.32

Valve plate thickness (From 1984 to 1987)

Inlet valve:

• standard - 1.05
• limit - 1.0

Exhaust valve:

• standard - 1.65-1.95
• limit - 1.95

since 1988.

Inlet valve:

• standard - 0.85-1.15
• limit - 0.65

Exhaust valve:

• standard - 1.05-1.35
• limit - 0.95

Tightening torques for threaded connections (Nm)

Connecting rod cap nuts - 31

Main bearing cap bolts

From 1984 to 1987 - 45

Since 1988:

• separate lids with bridge - 65
• body of covers - 45