Engine specifications (Honda Civic 6)

Repair without removing from the car

Characteristic	Meaning
Firing order	1–3–4–2
Cylinder numbering (front to back)	1–2–3–4
Cylinder diameter, mm	74.93
Piston stroke, mm	89.92
Working volume, cm³ (l)	1589 (1.6)

Cylinder arrangement and direction of rotation of the ignition distributor

Characteristic	Meaning
Axial clearance, mm
nominal	0.051
maximum permissible	0.152
Height of cam in lifting plane, mm
D16Y5
intake
primary	38.4277
secondary	32.1920
graduation	38.7833
D16Y7
intake	35.2984
graduation	37.2821
D16Y8
intake
primary	36.7767
intermediate	38.2727
secondary	37.0637
graduation	38.0086
Lateral runout, mm
nominal	0.025
maximum permissible	0.051
Working clearance in bearings, mm
nominal	0.0508÷0.1016
maximum permissible	0.152

Characteristic	Meaning
Working clearances of gears, mm
axial clearance of gears
nominal	0.025÷0.076
maximum permissible	0.152
the gap between the tops of the gear teeth
nominal	0.025÷0.152
maximum permissible	0.203
clearance between the outer gear and the housing walls
nominal	0.102÷0.178
maximum permissible	0.203

Characteristic	Meaning
Camshaft Bearing Cap Fastening Bolts
6mm bolts	12.2
8mm bolts	19
Camshaft timing gear bolt	37
Crankshaft Fluctuation Sensor Mounting Bolt	11.8
Crankshaft pulley bolt	182
Cylinder head bolts
stage 1	19
stage 2	49
stage 3	66
stage 4	66
Bolts securing the drive disc to the crankshaft	73
Intake manifold mounting nuts	23
Exhaust manifold to cylinder head mounting nuts	31
Nuts securing the inlet pipe to the exhaust manifold
D16Y5, D16Y7	34
D16Y8	54
Exhaust Manifold Upper Cover Bolts	23
Exhaust manifold lower cover mounting bolts (D16Y5, D16Y7)	10.8
Flywheel to crankshaft mounting bolts	118
Oxygen sensor (l-probe)	45
Oil pressure switch sensor	17.6
Engine oil pan drain plug	39
Oil pan to engine mounting bolts	11.8
Nuts for fastening the oil intake tube to the pump body	10.8
Fastening the oil pump oil intake to the main bearing cap bridge	10.8
Bolts for fastening the oil pump housing to the engine	10.8
Oil pump cover mounting screws	6.8
Crankshaft Rear Oil Seal Retainer Bolts	10.8
Timing Belt Cover Fastening Bolts	9.7
Timing Belt Tensioner Fastening Bolt	45
Cylinder head cover mounting bolts	9.7
VTEC Lockup Solenoid Valve Mounting Bolts	11.8
Water pump mounting bolts	12.2

Characteristic	Meaning
Compression pressure in cylinders, kgf/cm²
Nominal	12.9
Minimum acceptable	9.5
Maximum permissible difference between cylinders	2.0
Oil pressure (the engine is warmed up to normal operating temperature), kgf/cm²
At idle speed	0.7
At an engine speed of 3000 rpm	3.5

Characteristic	Meaning
Cylinder diameter, mm
Nominal	75.0011÷75.0189
Maximum permissible	75.0697
Maximum permissible cylinder taper, mm	0.051
Maximum permissible cylinder ovality, mm	0.051
Maximum permissible excess of cylinder diameter, mm	0.510
Maximum permissible non-flatness of the mating surface, mm	0.102

Characteristic	Meaning
Piston diameter, mm	74.9808÷74.9910
Nominal	74.9706
Maximum permissible	5.16
Height of the diameter measurement point from the skirt cut, mm
Piston clearance in cylinder, mm
Nominal	0.0102÷0.0406
Maximum permissible	0.051
Piston ring clearance in grooves, mm
Upper compression ring	0.0356÷0.0610
Nominal	0.127
Maximum permissible
Second compression ring
Nominal	0.0305÷0.0559
Maximum permissible	0.127
Clearances in piston ring locks, mm
Upper compression ring
Nominal	0.152÷0.305
Maximum permissible	0.610
Second compression ring
Nominal	0.305÷0.457
Maximum permissible	0.711
Oil scraper ring
Nominal	0.203÷0.711
Maximum permissible	0.787

Characteristic	Meaning
Axial clearance, mm
Nominal	0.102÷0.356
Maximum permissible	0.457
Main bearing journals
Diameter, mm	54.9758÷55.0012
Maximum permissible taper, mm	0.0051
Maximum permissible ovality, mm	0.0051
Maximum permissible runout, mm	0.051
Working clearance in main bearings, mm
Necks 1 and 5
Nominal	0.0178÷0.0356
Maximum permissible	0.051
Necks 2, 3 and 4
Nominal	0.0229÷0.0432
Maximum permissible	0.051
Connecting rod bearing journals
Diameter, mm	44.9758÷45.0012
Maximum permissible taper, mm	0.0051
Maximum permissible ovality, mm	0.0051
Maximum permissible runout, mm	0.051
Working clearance in connecting rod bearings, mm
Nominal	0.0203÷0.0381
Maximum permissible	0.051
Lateral play of connecting rods, mm
Nominal	0.152÷0.305
Maximum permissible	0.406

Characteristic	Meaning
Maximum permissible non-flatness of the mating surface of the head, mm
Without groove	0.051
Repair	0.203
Cylinder head height, mm	92.939÷93.040
Valve seat chamfer angle	45°
The angle of inclination of the working chamfer of the valve plates	45°
Width of the cylindrical part (belt) of the forming surface of the valve plate, mm
Intake valves	0.660
Exhaust valves	0.940
Valve stem diameter, mm
Intake valves
Nominal	5.4788÷5.4889
Maximum permissible	5.08
Exhaust valves
Nominal	5.4508÷5.4610
Maximum permissible	5.04
Inner diameter of valve guide bushings, mm
Nominal	5.512÷5.537
Maximum permissible	5.563
Valve stem seat clearance in guide bushings, mm
Intake valves
Nominal	0.025÷0.051
Maximum permissible	0.076
Exhaust valves
Nominal	0.051÷0.076
Maximum permissible	0.102
Installation height of valve stems, mm
Nominal	53.162÷53.645
Maximum permissible	53.899
Free length of valve springs, mm
D16Y7	57.91
D16Y5
Intake valves	56.39
Exhaust valves	57.91
D16Y8
Intake valves	57.91
Exhaust valves	58.67