Hyundai Kona: Engine Mechanical System / Specifications

Hyundai Kona (OS) 2018-2025 Service Manual / Engine Mechanical System / Specifications

Specifications
Description
Specifications
Limit
General
Type
 In-line, DOHC
Number of cylinders
 4
Bore
 77 mm (3.0315 in)
Stroke
 85.44 mm (3.3638 in)
Total displacement
 1,591cc (97.09 cu.in)
Compression ratio
 10 : 1
Firing order
 1 - 3 - 4 - 2
Valve timing
Intake valve
 Opens
 ATDC 10° / BTDC 40°
Closes
 ABDC 59° / ABDC 9°
Exhaust valve
 Opens
 BBDC 36° / BBDC 4°
Closes
 ATDC 3° / ATDC 43°
Cylinder head
Flatness of gasket surface
 Less than 0.05 mm (0.0020 in) for total area
Less than 0.02 mm (0.0008 in) for a section of 100 mm (3.9370 in) x 100 mm (3.9370 in)
Camshaft
Cam height
 Intake
 43.55 mm (1.7382 in)
Exhaust
 42.60 mm (1.6889 in)
Journal outer diameter (Intake, Exhaust)
 No.1
36.464 - 36.480 mm (1.4356 - 1.4362 in)

No.2, 3, 4, 5
 22.964 - 22.980 mm (0.9041 - 0.9047 in)

Camshaft cap oil clearance
 0.027 - 0.058 mm (0.0011 - 0.0023 in)
 0.1 mm (0.0039 in)
End play
 0.1 - 0.2 mm (0.0039 - 0.0079 in)
Valve
Valve length
 Intake
 93.15 mm (3.6673 in)
Exhaust
 92.60 mm (3.6457 in)
Stem outer diameter
 Intake
 5.465 - 5.480 mm (0.2152 - 0.2157 in)
Exhaust
 5.458 - 5.470 mm (0.2149 - 0.2154 in)
Face angle
 45.25° - 45.75°
Thickness of valve head (margin)
 Intake
 1.35 - 1.65 mm (0.0531 - 0.0649 in)
 0.8 mm (0.0315 in)
Exhaust
 1.55 - 1.85 mm (0.0610 - 0.0728 in)
 1.0 mm (0.0394 in)
Valve stem to valve guide clearance
 Intake
 0.020 - 0.047 mm (0.0008 - 0.0019 in)
 0.10 mm (0.0039 in)
Exhaust
 0.030 - 0.054 mm (0.0012 - 0.0021 in)
 0.15 mm (0.0059 in)
Valve guide
Length
 Intake
 40.3 - 40.7 mm (1.5866 - 1.6024 in)
Exhaust
 40.3 - 40.7 mm (1.5866 - 1.6024 in)
Valve spring
Free length
 45.1 mm (1.7756 in)
Out of squareness
 Less than 1.5°
Cylinder block
Cylinder bore
 77.00 - 77.03 mm (3.0315 - 3.0327 in)
Flatness of gasket surface
 Less than 0.05 mm (0.0020 in) for total area
Less than 0.02 mm (0.0008 in) for a section of 100 mm (3.9370 in) x 100 mm (3.9370 in)
Piston
Piston outer diameter
 76.97 - 77.00 mm (3.0303 - 3.0315 in)
Piston to cylinder clearance
 0.02 - 0.04 mm (0.0008 - 0.0016 in)
Ring groove width
 No. 1 ring groove
 1.23 - 1.25 mm (0.0484 - 0.0492 in)
 1.26 mm (0.0496 in)
No. 2 ring groove
 1.53 - 1.55 mm (0.0602 - 0.0610 in)
 1.26 mm (0.0496 in)
Oil ring groove
 2.01 - 2.03 mm (0.0791 - 0.0799 in)
 2.05 mm (0.0807 in)
Piston ring
Side clearance
 No.1 ring
 0.04 - 0.08 mm (0.0016 - 0.0031 in)
 0.1 mm (0.0039 in)
No.2 ring
 0.04 - 0.08 mm (0.0016 - 0.0031 in)
 0.1 mm (0.0039 in)
Oil ring
 0.02 - 0.06 mm (0.0008 - 0.0024 in)
 0.2 mm (0.0079 in)
End gap
 No. 1 ring
 0.14 - 0.24 mm (0.0055 - 0.0094 in)
 0.30 mm (0.0118 in)
No. 2 ring
 0.30 - 0.45 mm (0.0118 - 0.0177 in)
 0.50 mm (0.0197 in)
Oil ring
 0.20 - 0.40 mm (0.0079 - 0.0157 in)
 0.80 mm (0.0315 in)
Piston pin
Piston pin outer diameter
 19.997 - 20.000 mm (0.7872 - 0.7874 in)
Piston pin hole inner diameter
 20.004 - 20.009 mm (0.7875 - 0.7878 in)
Piston pin hole clearance
 0.004 - 0.012 mm (0.0001 - 0.0005 in)
Connecting rod small end hole inner diameter
 20.005 - 20.011 mm (0.7875 - 0.7878 in)
Connecting rod
Connecting rod big end inner diameter
 45.000 - 45.018 mm (1.7717 - 1.7724 in)
Connecting rod bearing oil clearance
 0.030 - 0.050 mm (0.0012 - 0.0020 in)
 0.060 mm (0.0024 in)
Side clearance
 0.10 - 0.25 mm (0.0039 - 0.0098 in)
 0.35 mm (0.0138 in)
Crankshaft
Main bearing oil clearance
 No. 1, 2, 3, 4, 5
 0.020 - 0.041 mm (0.0008 - 0.0016 in)
 0.05 mm (0.0020 in)
End play
 0.05 - 0.25 mm (0.0020 - 0.0098 in)
 0.3 mm (0.0118i n)
Engine oil
Oil quantity
 Total
 4.6 - 4.9 L (1.21 - 1.29 U.S.gal., 4.86 - 5.17 U.S.qt., 4.04 - 4.30 lmp.qt.)
 When replacing a short engine or a block assembly
Oil pan
 4.2 L (1.10 U.S.gal., 4.43 U.S.qt., 1.10 lmp.qt.)
Drain and refill
 4.5 L (1.18 U.S.gal., 4.75 U.S.qt., 3.95 lmp.qt.)
 Including oil filter
Oil grade
 Specification
 ACEA A5 / 5W-30
  
•
API SL, ILSAC GF-3, ACEA A3 Class engine oil can be used if the recommended engine oil is not available.
•
Refer to the "Lubrication System" for recommended SAE viscosity number.

Oil pressure (at 1000rpm)
 100 kPa (1.0 kg/cm², 14.5 psi) or above
 Oil temperature in oil pan : 110 ± 2°C (230 ± 36°F)
Cooling system
Cooling method
 Forced circulation with cooling fan
Coolant quantity
 7.1 L (1.87 U.S.gal., 7.50 U.S.qt., 6.24 lmp.qt.)
Thermostat
 Type
 Wax pellet type
Opening temperature
 82 ± 1.5°C (179.6 ± 2.7°F)
Full opening temperature
 95°C (203°F)
Radiator cap
 Main valve opening pressure
 93.16 - 122.58 kpa
(0.95 - 1.25 kgf/cm², 13.51 - 17.78 psi)
Vacuum valve opening pressure
 MAX. 6.86 kpa (0.07 kgf/cm², 1.00 psi)

Tightening Torques
Item
N.m
kgf.m
lb-ft
Engine mounting
Engine mounting bracket to body fixing bolt
 49.0 - 63.7
 5.0 - 6.5
 36.2 - 47.0
Engine mounting support bracket to engine mounting insulator fixing nut
 78.5 - 98.1
 8.0 - 10.0
 57.9 - 72.3
Engine mounting support bracket to engine support bracket fixing bolt
 58.8 - 73.5
 6.0 - 7.5
 43.3 - 54.2
Engine mounting support bracket to engine support bracket fixing nut
 58.8 - 73.5
 6.0 - 7.5
 43.3 - 54.2
Transaxle mounting bracket to body fixing bolt
 49.0 - 63.7
 5.0 - 6.5
 36.2 - 47.0
Transaxle mounting insulator to transaxle mounting support bracket fixing bolt
 107.9 - 127.5
 11.0 - 13.0
 79.6 - 94.0
Roll rod bracket to sub frame fixing bolt
 49.0 - 63.7
 5.0 - 6.5
 36.2 - 47.0
Roll rod insulator to roll rod mounting support bracket fixing nut
 107.9 - 127.5
 11.0 - 13.0
 79.6 - 94.0
Timing system
Timing chain and oil pump assembly cover bolt (M6×20)
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Timing chain and oil pump assembly cover bolt (M6×38)
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Timing chain and oil pump assembly cover bolt (M6×70)
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Timing chain and oil pump assembly cover bolt (M8×22)
 18.6 - 23.5
 1.9 - 2.4
 13.7 - 17.4
Idler pulley assemlby bolt
 42.2 - 53.9
 4.3 - 5.5
 31.1 - 39.8
Timing chain tensioner arm bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Timing chain guide bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Crankshaft damper pulley bolt
 [46.1 - 52.0] + [38°- 42°]
 [4.7 - 5.3] + [38°- 42°]
 [34.0 - 38.3] + [38°- 42°]
Engine support bracket bolt
 29.4 - 41.1
 3.0 - 4.2
 21.6 - 30.3
Timing chain tensioner bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Cylinder head
Cylinder head cover bolt
 [3.9 - 5.9] + [7.8 - 9.8]
 [0.4 - 0.6] + [0.8 - 1.0]
 [2.9 - 4.3] + [5.8 - 7.2]
Camshaft bearing cap bolt (M6)
 [5.9] + [11.8 - 13.7]
 [0.6] + [1.2 - 1.3]
 [4.3] + [8.7 - 10.1]
Camshaft bearing cap bolt (M8)
 [9.8] + [18.6 - 22.6]
 [1.0] + [1.9 - 2.3]
 [7.2] + [13.7 - 16.6]
Cylinder head bolt
 [29.4] + [90°] + [90°]
 [3.0] + [90°] + [90°]
 [21.7] + [90°] + [90°]
CVVT assembly mounting bolt
 63.7 - 73.5
 6.5 - 7.5
 47.0 - 54.2
OCV (Oil control valve) bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Exhaust OCV (Oil control valve) adaptor bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Cylinder block
Ladder frame bolt
 18.6 - 23.5
 1.9 - 2.4
 13.7 - 17.4
Connecting rod cap bolt
 [17.7 - 21.6] + [88 - 92°]
 [1.8 - 2.2] + [88 - 92°]
 [13.0 - 15.9] + [88 - 92°]
Crankshaft main bearing cap bolt
 [17.7 - 21.6] + [88 - 92°]
 [1.8 - 2.2] + [88 - 92°]
 [13.0 - 15.9] + [88 - 92°]
Piston cooling oil jet bolt
 8.8 - 12.7
 0.9 - 1.3
 6.5 - 9.4
External damper flywheel
 71.6 - 75.5
 7.3 - 7.7
 52.8 - 55.7
Crankshaft position sensor wheel bolt
[Part No : 39191 - 37100]
 10.8 - 11.8
1.1 - 1.2
8.0 - 8.7
Crankshaft position sensor wheel bolt
[Part No : 39191 - 37110]
 12.7 - 13.7
1.3 - 1.4
9.4 - 10.1
Lubrication system
Oil filter
 11.8 - 15.7
 1.2 - 1.6
 8.7 - 11.6
Oil cooler bolt
50.0 - 55.9
5.1 -5.7
36.9 - 41.2
Oil pan bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Oil pan drain plug
 34.3 - 44.1
 3.5 - 4.5
 25.3 - 32.5
Oil screen nut
 24.5 - 31.4
 2.5 - 3.2
 18.1 - 23.1
Oil pressure switch
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Oil level gauge assembly mounting bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Cooling system
Water pump pulley bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Water pump bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Water temperature control assembly mounting bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Water inlet fitting nut
 18.6 - 23.5
 1.9- 2.4
 13.7 - 17.4
Water pipe mounting bolt (M6)
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Water pipe mounting nut
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Water pipe mounting bolt (M8)
 18.6 - 23.5
 1.9 - 2.4
 13.7 - 17.4
Intake and exhaust system
Air intake hose clamp bolt
 2.9 - 4.9
 0.3 - 0.5
 2.2 - 3.6
Air cleaner asembly bolt
 3.9 - 5.9
 0.4 - 0.6
 2.9 - 4.3
Electronic throttle control (ETC) module bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Intake manifold nut
 18.6 - 23.5
 1.9 - 2.4
 13.7 - 17.4
Intake manifold bolt
 18.6 - 23.5
 1.9 - 2.4
 13.7 - 17.4
Vacuum pipe mounting bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Turbo manifold module heat protector mounting bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Cylinder head cover heat protector mounting bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Turbo charger oil drain pipe bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Turbo charger oil drain pipe nut
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Turbo charger oil feed pipe bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Turbo charger oil feed pipe eyebolt
 11.7 - 17.6
 1.2 - 1.8
 8.6 - 13.0
Turbo charger pipe & hose bolt
 9.8 - 11.8
 1.0 - 1.2
 7.2 - 8.7
Turbo charger water pipe & hose eyebolt
 26.4 - 32.3
 2.7 - 3.3
 19.5 - 23.8
Turbo manifold module mounting nut
 35.3 - 41.1
 3.6 - 4.2
 26.0 - 30.3
Catalytic converter
 35.3 - 41.1
 3.6 - 4.2
 26.0 - 30.3
Intercooler inlet pipe mounting bolt
 18.6 - 23.5
 1.9 - 2.4
 13.7 - 17.4
Catalytic converter stay (B) bolt
 49.0 - 53.9
 5.0 - 5.5
 36.2 - 39.8
Catalytic converter stay (A) bolt
 39.2 - 44.1
 4.0 - 4.5
 28.9 - 32.5
Muffler monting nut
 39.2 - 58.8
 4.0 - 6.0
 28.9 - 43.4

Engine Mechanical System
...

Repair procedures
Compession Pressure Inspection    • If the there is lack of power, excessive oil consump ...

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