Technical data of SOHC engines (Hyundai Accent LC)

Contents: Cooling system ⇓ Coolant ⇓ Tightening torques, Nm ⇓

Name			Nominal values	Maximum permissible values
General information	Type		In-line, 12-valve
	Number of cylinders		4 1.5 l	1.3 l
	Cylinder diameter		75.5 mm	71.5 mm
	Piston stroke		83.5 mm	83.5 mm
	Working volume		1495 cm³	1341 cm³
	Compression ratio		10,0	9,5
	Cylinder firing order		1–3–4–2	1–3–4–2
	Idle speed of the crankshaft		800±100 min⁻¹	800±100 min⁻¹
	Setting the ignition timing angle at rotation speed		9±5°/ 800 min⁻¹	9±5°/ 800 min⁻¹
The moment of opening or closing of the valve	Intake valves	Opening before TDC	12°
		Closing after NMT	52°
	Exhaust valves	Closing after TDC	52°
		Closing after NMT	12°
Cylinder head	Flatness of the mating surface		0.03 mm	0.08 mm
	Flatness of the collector mounting surface		0.15 mm	0.3 mm
	Increasing the diameter of the hole for installing the valve seat	Intake valves	0.3 mm	28.8–28.821 mm
		Intake valves	0.6 mm	29.1–29.121 mm
		Exhaust valves	0.3 mm	34.3–34.325 mm
		Exhaust valves	0.6 mm	34.6–34.625 mm
	Increasing the diameter of the hole for installing the valve guide bushing (inlet and outlet)	0.05 mm	11.05–11.068 mm
		0.25 mm	11.25–11.268 mm
		0.50 mm	11.50–11.518 mm
Camshaft	Cam height	Intake valves	42.8557 mm	42,3575
		Exhaust valves	42.7354 mm	42.2624 mm
	Neck diameter		30 mm
	Oil clearance in plain bearing		0.045–0.085 mm
	Axial play		0.07–0.28 mm
Valves	Valve stem	Intake valves	5.97–5.955 mm
		Exhaust valves	5.965–5.95 mm
	Working chamfer		45–45,3°
	Valve plate thickness	Intake valves	1.1 mm	0.8 mm
		Exhaust valves	1.4 mm	1.0 mm
	Clearance between guide and valve stem	Intake valves	0.03–0.06 mm	0.10 mm
		Exhaust valves	0.035–0.065 mm	0.5 mm
	Valve guide diameter	Intake valves	10.05 mm
		Exhaust valves	11.00 mm
	Increased dimensions		0.05, 0.25, 0.50 mm
Valve seat	Working chamfer width	Intake valves	0.8–1.2 mm
		Exhaust valves	1.5–1.9 mm
	Working chamfer angle		45°
	Increased dimensions		0.3, 0.6 mm
Valve spring	Length in free state		42.03 mm
	Length under load		24.7±1.2 kg/ 34.5 mm
			54.6±2.7 kg/ 25.9 mm
	Perpendicularity		1,5°
Cylinder block	Cylinder diameter		75.50–75.53 mm
	Ovality and taper		Less than 0.01 mm
	Clearance between piston and cylinder		0.02–0.04 mm
Piston	Diameter		75.45–75.50 mm
	Increased size		0.25, 0.50, 0.75, 1.00 mm
Piston rings	Piston groove clearance	№1, 2	0.04–0.085 mm	0.1 mm
	Gap in the lock (1.5 l)	№1	0.25–0.35 mm	1.0 mm
		№2	0.37–0.52 mm	1.0 mm
		Oil scraper ring	0.25–1.00 mm	1.0 mm
	Increased size		0.25, 0.50, 0.75, 1.00 mm
Connecting rod	Twisting		Less than 0.05 mm
	Bending		Less than 0.1 mm
	Axial play on the crankshaft journal		0.10–0.25 mm	0.4 mm
Connecting rod bearing	Gap		0.018–0.036 mm
	Reduced size		0.25, 0.50, 0.75 mm
Crankshaft	Crankpin diameter		45 mm
	Main journal diameter		50 mm
	Sag		Less than 0.03 mm
	Axial play		0.05–0.175 mm
	Reduced crankpin size	0.25 mm	44.704–44.722 mm
		0.5 mm	44.454–44.472 mm
		0.75 mm	44.204–44.222 mm
	Reduced size of the main journal	0.25 mm	49,700–49,718 mm
		0.5 mm	49.450–49.468 mm
		0.75 mm	49,200–49,218 mm
Flywheel	Beating		0.1 mm	0.13 mm
Oil pump	Clearance between outer gear and front cover		0.12–0.18 mm
	Clearance between inner gear and front cover		0.04–0.065 mm
	Clearance between external and internal gears		0.0025–0.069 mm
	Oil pressure at idle		147 kPa
	Spring	Length in free state	46,6
		Length under load	6.1 kg/ 40.1 mm

Cooling system

Type	Sealed, with forced circulation of liquid and electric radiator fan
Coolant volume	6.0 l
Cooling capacity of the radiator	38000 Kcal/hour
Radiator cap	Excess pressure valve	81.4–108 kPa
Radiator cap	Reduced pressure valve	-6.86 kPa
Thermostat	opening start temperature	88°C
	full opening temperature	100°C
	valve stroke	8 mm
	Identification tag	88
Water pump drive		Poly V-belt
Coolant temperature sensor resistance		2.31–2.59 Ohm at 20°C
Coolant temperature sensor resistance		146.9–147.3 Ohm at 110°C

Coolant

Antifreeze	Antifreeze content in coolant
Ethylene glycol	50%

Tightening torques, Nm

Front support mounting nut and bolt	30–42
Left support mounting bolt	30–42
Oil pressure sensor	13–15
Cylinder head mounting bolts	23–27 + (60–62°)+(60–62°)
Bolts and nuts for fastening the intake and exhaust manifolds	15–20
Cylinder head cover mounting bolts	8–10
Rocker shaft mounting bolts	20–24
Camshaft mounting bolts	20–27
Back plate mounting bolt	8–10
Connecting rod cap fastening union nut	32–35
Crankshaft bearing cap mounting bolt	55–60
Flywheel mounting bolts	130–140
Drive plate mounting bolts (automatic transmission)	130–140
Crankshaft pulley mounting bolt	140–150
Camshaft pulley mounting bolt	80–100
Timing Belt Tensioner Roller Fastening Bolt	20–27
Timing Belt Cover Fastening Bolts	10–12
Front cover mounting bolts	12–15
Nut (large) for fastening the right support	90–110
Nut (small) for fastening the right support	50–65
Bolts and nuts for fastening the right support to the cylinder block	50–65
Gearbox support mounting nuts	90–100
Gearbox support bracket side mounting bolts	30–40
Rear support shaft mounting nut	45–60
Rear support shaft bracket mounting nut	30–40
Front support shaft mounting nut	45–60
Front support shaft bracket mounting nut	30–40
Oil filter	12–16
Oil pan mounting bolts	6–8
Oil drain plug	35–45
Oil filter mounting bolts	15–22
Upper timing belt cover mounting bolts	10–12
Lower timing belt cover mounting bolts	10–12
Generator bracket mounting bolts and nuts	20–25
Generator mounting bolt	15–22
Generator Bracket Mounting Bolt	20–28
Water pump pulley mounting bolts	8–10
Water pump mounting bolts	12–15
Coolant temperature gauge	10–12
Coolant temperature sensor	15–20
Coolant outlet mounting bolt	17–20
Thermostat housing mounting bolt	15–20
Air filter housing mounting bolts	8–10
Resonator mounting bolts	4–6
Bolts securing the throttle assembly to the air chamber	15–20
Exhaust manifold housing mounting bolts	15–20
Oxygen sensor to exhaust manifold	50–60
Nuts securing the exhaust inlet pipe to the exhaust manifold	30–40
Exhaust Inlet Pipe Bracket Mounting Bolts	30–40
Bolts securing the catalytic converter to the exhaust pipe	40–60
Nuts securing the catalytic converter to the main muffler	30–40