Technical data of DOHC engines (Hyundai Accent LC)

Name			Nominal values	Maximum permissible values
General information	Type		In-line, with two camshafts
	Number of cylinders		4
	Cylinder diameter		75.5 mm
	Piston stroke		83.5 mm
	Working volume		1495 cm³
	Compression ratio		10,0
	Cylinder firing order		1–3–4–2
	Idle speed of the crankshaft		750±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	5°
		Closing after NMT	35°
	Exhaust valves	Closing after TDC	35°
		Closing after NMT	5°
	Valve overlap		10°
Cylinder head	Flatness of the mating surface		0.03 mm	0.08 mm
	Flatness of the collector mounting surface		0.15 mm	0.2 mm
	Increasing the diameter of the hole for installing the valve seat	Intake valves	0.3 mm 29.8–29.821 mm
		Exhaust valves	0.6 mm 30.1–30.121 mm
		Intake valves	0.3 mm 27.3–27.321
		Exhaust valves	0.6 mm 27.6–27.621 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	43.4484 mm	42.9484 mm
		Exhaust valves	43.8489 mm	43.3489 mm
	Neck diameter		27.0 mm
	Oil clearance in plain bearing		0.035–0.072 mm
	Axial play		0.1–0.2 mm
Valves	Valve length	Intake valves	91.7 mm
		Exhaust valves	92.3 mm
	Valve stem	Intake valves	5.955–5.97 mm
		Exhaust valves	5.935–5.95 mm
	Valve plate thickness	Intake valves	1.1 mm	0.8 mm
		Exhaust valves	1.3 mm	1.0 mm
	Clearance between guide and valve stem	Intake valves	0.03–0.06 mm	0.1 mm
		Exhaust valves	0.05–0.08 mm	0.15 mm
	Valve guide diameter	Intake valves	12.8 mm
		Exhaust valves	12.8 mm
		Increased dimensions	0.05, 0.25, 0.50 mm
	Width of the working chamfer of the valve seat	Intake valves	0.8–1.2 mm
		Exhaust valves	1.3–1.7 mm
	Working chamfer angle		45°
	Increased dimensions		0.3, 0.6 mm
	Free length of valve spring		44.0 mm
	Valve spring length under load		21.6 kg/ 35 mm 41.5 kg/ 27.2 mm
	Valve spring 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		0.025–0.045 mm
Piston	Diameter		75.465–75.495 mm
	Increased size		0.25, 0.50, 0.75, 1.00 mm
Piston rings	Piston groove clearance		0.04–0.085 mm	0.1 mm
	Gap in the lock	№1	0.20–0.35 mm	1.0 mm
		№2	0.37–0.52 mm	1.0 mm
		Oil scraper ring	0.2–0.7 mm	1.0 mm
	Increased size		0.25, 0.50, 0.75, 1.00 mm
Connecting rod	Twisting		0.1 mm
	Bending		0.05 mm
	Axial play on the crankshaft journal		0.100–0.250 mm	0.4 mm
	Connecting rod bearing	Gap	0.024–0.042 mm
		Reduced size	0.25, 0.50, 0.75 mm
Crankshaft	Crankpin diameter		45 mm
	Main journal diameter		50 mm
	Sag		Not more than 0.03 mm
	Ovality and taper of necks		Not more than 0.01 mm
	Axial play		0.05–0.175 mm
	Reduced crankpin size 0.25 mm		42.225–44.24 mm
	Reduced crankpin size 0.50 mm		44.475–44.49 mm
	Reduced crankpin size 0.75 mm		44,725–44,74
	Reduced main journal size 0.25 mm		49.227–49.242 mm
	Reduced main journal size 0.50 mm		49.477–49.492 mm
	Reduced main journal size 0.75 mm		49.727–49.742 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		0.04–0.085 mm
	Clearance between external and internal gears		0.06–0.11 mm
	Oil pressure at idle		147 kPa
	Length of the safety valve spring in free state		46.6 mm
	Length of the safety valve spring under load		40.1 mm / 6.1 kg
Cooling system	Coolant volume		5.5 l
	Cooling capacity of the radiator		38000 Kcal/hour
	Radiator cap	Excess pressure valve	81.4–108 kPa
		Reduced pressure valve	-6.86 kPa
	Thermostat	opening start temperature	82°C
		full opening temperature	95°C
		valve stroke	8 mm
	Coolant temperature sensor resistance		42.4–54.4 Ohm at 85°C
			22.1–26.1 Ohm at 110°C
Coolant	Antifreeze		Antifreeze content in coolant
	Ethylene glycol		50%

Tightening torques

Front support bracket mounting nut and bolt	45–55
Front support mounting bolt	70–90
Rear support mounting bolt	70–90
Oil pressure sensor	15–22
Cylinder head mounting bolts	35 + (90–92°)+weaken +35+ (90–92°)
Intake manifold mounting bolts and nuts	18–25
Intake Manifold Fastening Nuts	30–40
Cylinder head cover mounting bolts	8–10
Camshaft cover mounting bolts	12–14
Back plate mounting bolt	8–10
Connecting rod cap fastening union nut	32–35
Crankshaft bearing cap mounting bolts	55–60
Flywheel mounting bolts	120–130
Crankshaft pulley mounting bolt	140–150
Camshaft pulley mounting bolt	80–100
Timing Belt Tensioner Roller Fastening Bolt	20–27
Timing Belt Guide Roller Fastening Bolt	43–55
Timing Belt Cover Fastening Bolts	8–10
Front cover mounting bolts	20–27
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	90–110
Gearbox support bracket side mounting bolts	30–40
Rear support shaft mounting nut	50–60
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
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
Nuts and bolts for fastening the intake manifold to the cylinder head	15–20
Bolts for fastening the air chamber to the cylinder block	18–25
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 muffler	30–40