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General Information (Engine Mechanical System): Specifications Kia Forte I

Mechanical

General Specifications

DescriptionSpecificationsLimit
2.02.4
General
TypeIn-line, Double Overhead Camshaft
Number of cylinder4
Bore86mm (3.385in)88mm (3.464in)
Stroke86mm (3.385in)97mm (3.819in)
Total displacement1998cc (121.92cu.in)2359cc (143.90cu.in)
Compression ratio10.5
Firing order1-3-4-2
Valve timing
Intake valve
Opens (ATDC/BTDC)ATDC 7° ~ BTDC 38°
Closes (ABDC)ABDC 63° ~ 18°ABDC 67° ~ 22°
Exhaust
Opens (BBDC)BBDC 38°BBDC 44° ~ 4°
Closes (ATDC)ATDC 6°ATDC 0° ~ 40°
Valve
Valve length
Intake113.18mm (4.4559in.)112.93mm (4.4460in)
Exhaust105.84mm (4.1669in.)105.59mm (4.1570in)
Stem O.D.
Intake5.465 ~ 5.480mm (0.2151 ~ 0.2157in.)
Exhaust5.458 ~ 5.470mm (0.2149 ~ 0.2153in.)
Face angle45.25° ~ 45.75°
Margin
Intake1.02mm (0.0401in.)
Exhaust1.09mm (0.0429in.)
Valve stem to valve guide clearance
Intake0.020 ~ 0.047mm (0.00078 ~ 0.00185in.)0.07mm (0.00275in.)
Exhaust0.030 ~ 0.054mm (0.00118 ~ 0.00212in.)0.09mm (0.00354in.)
Valve guide
Length
Intake43.8 ~ 44.2mm (1.7244 ~ 1.7401in.)
Exhaust43.8 ~ 44.2mm (1.7244 ~ 1.7401in.)
Valve guide I.D5.500 ~ 5.512mm (0.2165 ~ 0.2170in.)
Valve seat
Width of seat contact
Intake1.16 ~ 1.46mm (0.0457 ~ 0.0575in.)
Exhaust1.35 ~ 1.65mm (0.0531 ~ 0.0649in.)
Seat angle44.75° ~ 45.10°
Valve spring
Free length47.44mm (1.8677in.)
Load19.0 ± 0.6kg/35.0mm (41.88 ± 1.32lb/1.3779in
39.8 ± 1.2kg/26.0mm (87.74 ± 2.64lb/1.0236in.)
Squareness1.5° MAX.
Valve clearance
Cold (20°C[68°F])
Intake0.17 ~ 0.23mm (0.0067 ~ 0.0090in.)0.10 ~ 0.30mm (0.0039 ~ 0.0118in.)
Exhaust0.27 ~ 0.33mm (0.0106 ~ 0.0129in,)0.20 ~ 0.40mm (0.0078 ~ 0.0157in.)
Cylinder head
Flatness of gasket surfaceMax. 0.05mm (0.0019in.)
Flatness of manifold mounting surfaceMax. 0.10mm (0.0039in.)
Cylinder block
Cylinder bore86.00 ~ 86.03mm (3.3858 ~ 3.3870in.)88.00 ~ 88.03mm (3.4645 ~ 3.4657in.)
Out-of-round and taper of cylinder boreLess than 0.05mm (0.0019in.)
Clearance with piston (To set limits to new parts)0.015 ~ 0.035mm (0.0005 ~ 0.0013in.)
Piston
O.D (To set limits to new parts)85.975 ~ 86.0050mm (3.3848 ~ 3.3860in.)87.975 ~ 88.005mm (3.4635 ~ 3.4647in.)
Ring groove width
No. 11.235 ~ 1.250mm (0.0486 ~ 0.0492in.)1.26mm (0.0496in.)
No. 21.230 ~ 1.250mm (0.0484 ~ 0.0492in.)1.26mm (0.0496in.)
Oil ring2.01 ~ 2.03mm (0.0791 ~ 0.0799in.)2.05mm (0.0807in.)
Piston ring
Side clearance
No. 10.05 ~ 0.08mm (0.0019 ~ 0.0031in.)0.1mm (0.004in.)
No. 20.04 ~ 0.08mm (0.0015 ~ 0.0031in.)0.1mm (0.004in.)
Oil ring0.06 ~ 0.15mm (0.0023 ~ 0.0059in.)0.2mm (0.008in.)
End gap
No. 10.15 ~ 0.30mm (0.0059 ~ 0.0118in.)0.6mm (0.0236in.)
No. 20.37 ~ 0.52mm (0.0145 ~ 0.0204in.)0.7mm (0.0275in.)
Oil ring side rail0.20 ~ 0.70mm (0.0078 ~ 0.0275in.)0.8mm (0.0315in.)
Connecting rod
Bend0.05mm (0.0020in.) or less
Twist0.1mm (0.004in.) or less
Connecting rod big end to crankshaft side clearance0.100 ~ 0.250mm (0.0039 ~ 0.010in.)0.35mm (0.0138in.)
Connecting rod bearing
Oil clearance (To seat limits to new parts)0.027 ~ 0.045mm (0.0010 ~ 0.0017in.)0.05mm (0.0078in.)
Camshaft
Cam heightIntake43.8mm (1.7244in.)44.2mm (1.7401in.)
Exhaust45.00mm (1.7716in.)45.0mm (1.7716in.)
Journal O.DIntakeNo. 1[] 30mm (1.1811in.)
No. 2, 3, 4, 5[] 24mm (0.9449in.)
ExhaustNo. 1[] 40mm (1.5748in.)[] 36mm (1.4173in.)
No. 2, 3, 4, 5[] 24mm (0.9449in.)
Bearing oil clearanceIntakeNo. 10.022 ~ 0.057mm (0.0008 ~ 0.0022in.)0.09mm (0.0035in.)
No. 2, 3, 4, 50.045 ~ 0.082mm (0.0017 ~ 0.0032in.)0.12mm (0.0047in.)
ExhaustNo. 10.045 ~ 0.082mm (0.0017 ~ 0.0032in.)0 ~0.032mm (0 ~ 0.0012in.)0.12mm (0.0047in.)
No. 2, 3, 4, 50.045 ~ 0.082mm (0.0017 ~ 0.0032in.)
End play0.04 ~ 0.16mm (0.0015 ~ 0.0062in.)0.18mm (0.0071in.)
Crankshaft
Pin O.D.47.954 ~ 47.972mm (1.8879 ~ 1.8886in.)
Journal O.D.51.942 ~ 51.960mm (2.0449 ~ 2.0456in.)
End play0.07 ~ 0.25mm (0.0027 ~ 0.0098in.)
Crankshaft bearing
Oil clearance0.020 ~ 0.038mm (0.0007 ~ 0.0014in.)0.1mm (0.0039in.)
Radiator
TypePressurized corrugated fin type
Cooling methodWater-cooled, pressurized. Forced circulation with water pump
Radiator cap
Main valve opening pressure83 ~ 110kpa (12 ~ 16psi, 0.83 ~ 1.1kg/cm 2 )
Vacuum valve opening pressure7kpa (-100psi, -0.07kg/cm 2 ) or less
Thermostat
TypeWax pellet type with jiggle valve
Valve opening temperature82°C (177°F)
Full-opening temperature95°C (201°F)
Coolant pumpCentrifugal type impeller
Engine oil
Oil quantityTotal4.7L (4.97US qt, 4.13lmp qt)5.4L (5.71US qt, 4.75lmp qt)When replacing a short engine or a block assembly
Oil pan3.8L (4.01US qt, 3.34lmp qt)4.2L (4.44US qt, 3.69lmp qt)
Drain and refill4.1L (4.33US qt, 3.61lmp qt)4.5L (4.76US qt, 3.96lmp qt)Including oil filter
Oil gradeRecommendation5W-20/GF4 & SMIf not available, refer to SELECTION OF ENGINE OIL for recommended API or ILSAC classification and SAE viscosity number.
ClassificationAPI SL, SM or above ILSAC GF3, GF4 or aboveSatisfy the requirement of the API or ILSAC classification.
SAE viscosity gradeRecommended SAE viscosity numberRefer to SELECTION OF ENGINE OIL
Oil pressure (at 1000rpm)108kPa (1.1kg/cm 2 , 15.6psi) or above147kPa (1.5kg/cm 2 , 21.3psi) or aboveOil temperature in oil pan : 110±2°C (230±36°F)

GENERAL SPECIFICATIONS

Tightening Torque Specifications

ItemN.mKgf.m
Ladder frame bolt (M8 x 55)23.5 ~ 27.42.4 ~ 2.8
Ladder frame bolt (M8 x 103)23.5 ~ 27.42.4 ~ 2.8
Oil pump bolt23.5 ~ 27.42.4 ~ 2.8
Timing chain cover bolt (M8)18.6 ~ 22.51.9 ~ 2.3
Timing chain cover bolt (M6)7.8 ~ 9.80.8 ~ 1.0
Oil pan bolt (M6 x 10)9.8 ~ 11.81.0 ~ 1.2
Oil pan bolt (M8 x 103)26.5 ~ 30.42.7 ~ 3.1
Engine support bracket bolt (M8 x 30)19.6 ~ 24.52.0 ~ 2.5
Engine support bracket bolt (M10 x 40)39.2 ~ 44.14.0 ~ 4.5
Engine support bracket bolt (M10 x 45)39.2 ~ 44.14.0 ~ 4.5
Camshaft bearing cap bolt (M6)10.8 ~ 12.71.1 ~ 1.3
Camshaft bearing cap bolt (M8)27.4 ~ 31.42.8 ~ 3.2
Cylinder head bolt(32.4~36.3) + (90~95°) + (90~95°)(3.3~3.7) + (90~95°) + (90~95°)
Engine hanger bolt27.5 ~ 31.42.8 ~ 3.2
Cylinder head cover bolt7.8 ~ 9.80.8 ~ 1.0
Crankshaft pulley bolt166.6 ~ 176.417.0 ~ 18.0
Connecting rod bearing cap bolt(17.7~21.6) + (88~92°)(1.8~2.2) + (88~92°)
Main bearing cap bolt14.7 + (27.5~31.4) + (120~125°)1.5 + (2.8~3.2) + (120~125°)
Flywheel bolt117.6 ~ 127.412.0 ~ 13.0
Drive plate bolt117.6 ~ 127.412.0 ~ 13.0
Timing chain tensioner bolt9.8 ~ 11.81.0 ~ 1.2
Timing chain tensioner arm bolt9.8 ~ 11.81.0 ~ 1.2
Timing chain guide bolt9.8 ~ 11.81.0 ~ 1.2
OCV bolt9.8 ~ 11.81.0 ~ 1.2
CVVT bolt53.9 ~ 63.75.5 ~ 6.5
Exhaust camshaft sprocket bolt53.9 ~ 63.75.5 ~ 6.5
Oil pump (BSM) chain tensioner arm bolt9.8 ~ 11.81.0 ~ 1.2
Oil pump (BSM) chain guide bolt9.8 ~ 11.81.0 ~ 1.2
Oil pump (BSM) chain tensioner bolt9.8 ~ 11.81.0 ~ 1.2
Water pump bolt18.6 ~ 23.51.9 ~ 2.4
A/C compressor bracket bolt19.6 ~ 23.52.0 ~ 2.4
P/S pump bracket bolt44.1 ~ 53.94.5 ~ 5.5
Tensioner assembly integrated bracket bolt39.2 ~ 44.14.0 ~ 4.5
Water temperature control assembly nut18.6 ~ 23.51.9 ~ 2.4
Balance shaft module bolt (M8)16.7 + 60° +60°1.7 + 60° +60°
Balance shaft module bolt (M9)24.5 +105°2.5 +105°
Water temperature control assembly bolt14.7 ~ 19.61.5 ~ 2.0
Water inlet pipe nut18.6 ~ 23.51.9 ~ 2.4
Oil level gauge assembly bolt7.8 ~ 11.80.8 ~ 1.2
Ignition coil bolt3.9 ~ 5.90.4 ~ 0.6
Intake manifold bolt18.6 ~ 23.51.9 ~ 2.4
Intake manifold nut18.6 ~ 23.51.9 ~ 2.4
Intake manifold stay bolt18.6 ~ 23.51.9 ~ 2.4
Exhaust manifold heat protector bolt7.8 ~ 11.80.8 ~ 1.2
Exhaust manifold nut49.0 ~ 53.95.0 ~ 5.5
Exhaust manifold stay bolt (M8)18.6 ~ 27.51.9 ~ 2.8
Exhaust manifold stay bolt (M10)51.9 ~ 57.85.3 ~ 5.9
Muffler bolt39.2 ~ 58.84.0 ~ 6.0
Engine cover mounting bracket bolt9.8 ~ 11.81.0 ~ 1.2
Crankshaft position sensor bolt3.9 ~ 5.90.4 ~ 0.6
Oxygen sensor39.2 ~ 49.04.0 ~ 5.0
Knock sensor16.7 ~ 25.51.7 ~ 2.6
Camshaft position sensor3.9 ~ 5.90.4 ~ 0.6
Oil pressure switch7.8 ~ 11.80.8 ~ 1.2
Oil filter11.8 ~ 15.71.2 ~ 1.6

TIGHTENING TORQUE SPECIFICATIONS

See also:
• TIMING SYSTEM

More articles — General Information (Engine Mechanical System)