Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual / Engine Mechanical System / Specifications

Hyundai Santa Cruz: Engine Mechanical System / Specifications

- Specifications

Description

Specifications

Limit

General

Type

In-line, DOHC

Number of cylinders

Bore

88.5 mm (3.484 in.)

Stroke

101.5 mm (3.996 in.)

Total displacement

2497 cc (152.38 cu.in.)

Compression ratio

10.5 : 1

Firing order

1-3-4-2

Valve timing

Intake valve

Opens
(ATDC/BTDC)

BTDC 49° - ATDC 23°

Closes (ABDC)

ABDC 104° - ABDC 32°

Exhaust valve

Opens (BBDC)

BBDC 73° - BBDC 23°

Closes (BTDC)

BTDC 2° - ATDC 48°

Camshaft

Cam height

Intake

39.50 mm (1.5551 in.)

Exhaust

38.00 mm (1.4961 in.)

Journal outer diameter

Intake

NO. 1 : 35.956 - 35.970 mm (1.41559 - 1.41614 in.)
NO. 2,3,4,5 : 23.954 - 23.970 mm(0.94307 - 0.94370 in.)

Exhaust

Bearing oil clearance

Intake

NO. 1 : 0.037 - 0.065 mm (0.00146 - 0.00256 in.)
NO. 2,3,4,5 : 0.037 - 0.067 mm (0.00146 - 0.00264 in.)

Exhaust

End play

0.09 - 0.23mm (0.00354 - 0.00091 in.)

Valve

Valve length

Intake

108.378 mm (4.2668 in.)

108.228 mm (4.2609 in)

Exhaust

119.875 mm (4.7195 in.)

119.725 mm (4.7136 in)

Stem outer diameter

Intake

5.460 - 5.475 mm (0.2150 - 0.2156 in.)

Exhaust

5.453 - 5.465 mm (0.2147 - 0.2152 in.)

Face angle

45.25° - 45.75°

Thickness of valve head (margin)

Intake

0.8 mm (0.315 in.)

Exhaust

0.8 mm (0.315 in.)

Valve stem to valve guide clearance

Intake

0.025 - 0.052 mm (0.0010 - 0.0020 in.)

Exhaust

0.035 - 0.059 mm (0.0014 - 0.0023 in.)

Valve guide

Length

Intake

46.8 - 47.2 mm (1.8425 - 1.8583 in.)

Exhaust

46.8 - 47.2 mm (1.8425 - 1.8583 in.)

Inner diameter

Intake

5.500 - 5.512 mm (0.21654 - 0.21701 in.)

Exhaust

5.500 - 5.512 mm (0.21654 - 0.21701 in.)

Valve seat

Width of seat contact

Intake

1.16 - 1.46 mm (0.0457 - 0.0575 in.)

Exhaust

1.65 - 1.95 mm (0.0650 - 0.0768 in.)

Seat angle

Intake

44.75° - 45.10°

Exhaust

44.75° - 45.10°

Valve spring

Free length

52.51 mm (2.0673 in.)

Load

20.4 ± 1.0 kg / 39.0 mm (44.97 ± 2.2 lb / 1.3779 in.)
42.3 ± 2.1 kg / 29.0 mm (93.26 ± 4.63 lb / 1.0236 in.)

Out of squareness

Less than 1.5° (MAX)

Valve spring (Exhaust)

Free length

56.05 mm (2.2067 in.)

Load

25.5 ± 1.2 kg / 39.0 mm (56.22 ± 2.65 lb / 1.3779 in.)
48.4 ± 2.1 kg / 29.0 mm (106.70 ± 4.63 lb / 1.0236 in.)

Out of squareness

Less than 1.5° (MAX)

Cylinder head

Flatness of gasket surface

Less than 0.05 mm (0.0019 in.) for total area
Less than 0.02 mm (0.0007 in.) for a section of
100 mm (3.9370 in.)×100 mm (3.9370 in.)

Flatness of manifold mounting surface

Intake

Less than 0.10 mm (0.0039 in.)

Exhaust

Less than 0.10 mm (0.0039 in.)

Piston

Piston outer diameter

88.450 - 88.480 mm (3.48228 - 3.48346 in.)

Piston to cylinder clearance

0.040 - 0.060 mm (0.00157 - 0.00236 in.)

Ring groove width

No. 1 ring

1.235 - 1.250 mm (0.04862 - 0.04921 in.)

No. 2 ring

1.230 - 1.250 mm (0.04843 - 0.04921 in.)

Oil ring

2.010 - 2.025 mm (0.07913 - 0.07972 in.)

Piston ring

Side clearance

No. 1 ring

0.045 - 0.080 mm (0.00177 - 0.00315 in.)

No. 2 ring

0.040 - 0.080 mm (0.00157 - 0.00315 in.)

Oil ring

0.050 - 0.105 mm (0.0020 - 0.0041 in.)

End gap

No. 1 ring

0.15 - 0.20 mm (0.0059 - 0.0079 in.)

No. 2 ring

0.30 - 0.40 mm (0.0118 - 0.0157 in.)

Oil ring

0.10 - 0.40 mm (0.0039 - 0.0157 in.)

Piston pin

Piston pin outer diameter

21.997 - 22.000 mm (0.8660 - 0.8661 in.)

Piston pin hole inner diameter

22.003 - 22.007 mm (0.8663 - 0.8664 in.)

Piston pin hole clearance

0.003 - 0.010 mm (0.00012 - 0.00039 in.)

Connecting rod small end hole inner diameter

22.005 - 22.011 mm (0.8663 - 0.8666 in.)

Piston pin-to-connecting rod bushing oil clearance

0.005 - 0.014 mm (0.00020 - 0.00055 in.)

Connecting rod

Connecting rod big end inner diameter

51.000 - 51.018 mm (2.00787 - 2.00858 in.)

Connecting rod bearing oil clearance

0.032 - 0.050 mm (0.0013 - 0.0020 in.)

Side clearance

0.10 - 0.25 mm (0.0039 - 0.0098 in.)

Crankshaft

Main journal outer diameter

51.942 - 51.960 mm (2.04496 - 2.04567 in.)

Pin journal outer diameter

47.954 - 47.972 mm (1.88795 - 1.88866 in.)

Main bearing oil clearance

NO. 1,2,4,5 : 0.022 - 0.040 mm (0.00086 - 0.00157 in.)
NO. 3 : 0.028 - 0.046 mm (0.00110 - 0.00181 in.)

End play

0.100 - 0.280 mm (0.0039 - 1.0110 in.)

Cylinder block

Cylinder bore

88.50 - 88.53 mm (3.4842 - 3.4854 in.)

Flatness of gasket surface

Less than 0.05 mm (0.0019 in.) for total area
Less than 0.02 mm (0.0007 in.) for a section of
100 mm (3.9370 in.)×100 mm (3.9370 in.)

Engine oil

Oil quantity

Total

6.8 L (1.80 U.S.gal., 7.19 U.S.qt., 5.98 lmp.qt.)

When replacing a short engine or block assembly

Oil pan

5.5 L (1.45 U.S.gal., 5.81 U.S.qt., 4.84 lmp.qt.)

Drain and refill

5.8 L (1.53 U.S.gal., 6.13 U.S.qt., 5.10 lmp.qt.)

Including oil filter

Oil grade

Classification

SAE 0W-30 API SN PLUS / SP or ILSAC GF-6

•	If oil of acceptable viscosity is not available, refer to "Lubrication System" for recommended SAE viscosity number

Refer to the "Lubrication System".

Oil pressure (at 1,000rpm)
90.22 kPa (0.92 kgf/cm², 13.09 psi) or above
Oil temperature (oil pan) : 110±2°C (230±35.6℉)

Cooling system

Cooling method
Forced circulation with water pump (Engine)
Forced circulation with electric water pump (water cooled intercooler)
　

Coolant quantity
Engine Coolant
8.6L (2.27 U.S.gal., 9.09 U.S.qt., 7.56 lmp.qt.)

Reservoir tank cap
High pressure valve opening pressure
122.6 - 152.0 kPa (1.25 - 1.55 kgf/cm², 17.78 - 22.05 psi)
　

Vacuum valve opening pressure
Less then 6.8 kPa (Lower 0.07 kgf/cm, 0.9863 psi)
　

Tightening Torques

Item	N.m	kgf.m	lb-ft
Engine mounting
Engine mounting bracket mounting bolts	63.7 - 83.4	6.5 - 8.5	47.0 - 61.5
Engine mounting support bracket to engine mounting insulator mounting nut	107.9 - 127.5	11.0 - 13.0	79.6 - 94.0
Engine mounting support bracket to engine mounting bolts	107.9 - 127.5	11.0 - 13.0	79.6 - 94.0
Engine mounting support bracket to engine mounting nuts	107.9 - 127.5	11.0 - 13.0	79.6 - 94.0
Transaxle mounting bracket bolt	63.7 - 83.4	6.5 - 8.5	47.0 - 61.5
Trnasaxle mounting bracket nut	63.7 - 83.4	6.5 - 8.5	47.0 - 61.5
Trnasaxle mounting bracket 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 mounting bolt	49.0 - 63.7	5.0 - 6.5	36.2 - 47.0
Roll rod bracket to roll rod support bracket mounting bolt	107.9 - 127.5	11.0 - 13.0	79.6 - 94.0
Drive belt system
Drive belt tensioner bracket bolt	39.2 - 44.1	4.0 - 4.5	28.9 - 32.5
Drive belt tensioner fixing bolt	53.9 - 63.7	5.5 - 6.5	39.7 - 47.0
Crankshaft damper pulley fixing bolt	[114.7 - 120.6] + [68 - 72°]	[11.7 - 12.3] + [68 - 72°]	[84.6 - 88.9] + [68 - 72°]
Drive belt tensioner pulley fixing bolt	27.4 - 33.3	2.8 - 3.4	20.2 - 24.5
Timing system
Timing chain cover bolt (M6X25)	9.8 - 11.8	1.0 - 1.2	7.2 - 8.7
Timing chain cover bolt (M8X28)	18.6 - 22.5	1.9 - 2.3	13.7 - 16.6
Timing chain cover bolt (M10X30)	39.2 - 44.1	4.0 - 4.5	28.9 - 32.5
Timing chain tensioner bolt	9.8 - 11.8	1.0 - 1.2	7.2 - 8.7
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
Timing chain cam to cam guide bolt	9.8 - 11.7	1.0 - 1.2	7.23 - 8.67
E-CVVT cover bolt	[0.9 - 1.9] + [9.8 - 11.7]	[0.1 - 0.2] + [1.0 - 1.2]	[0.72 - 1.44] + [1.0 - 1.2]
Variable force solenoid (VFS) valve bolts	9.8 - 11.7	1.0 - 1.2	7.23 - 8.67
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]
Cam carrier bolt	18.6 - 22.5	1.9 - 2.3	13.74 - 16.63
Intake E-CVVT bolt	[32.3 - 36.3] + [43 - 47°]	[3.3 - 3.7] + [43 - 47°]	[23.9 - 26.8] + [43 - 47°]
Exhaust CVVT bolt	[22.5 - 26.4] + [28 - 32°]	[2.3 - 2.7] + [28 - 32°]	[16.63 - 19.52] + [28 - 32°]
Camshaft bearing cap bolt (M6) (LH/RH)	4.9 - 7.8 + [11.7 - 13.7]	[0.5 - 0.8] + [1.2 - 1.4]	3.61 - 5.78 + [8.67 - 10.12]
Camshaft bearing cap bolt (M8)	[9.8 - 11.7] + [18.6 - 22.5]	[1.0 - 1.2] + [1.9 - 2.3]	[7.23 - 8.67] + [13.74 - 16.63]
Cylinder head bolt	[56.9 - 60.8] + [100 - 104°] + [100 - 104°]	[5.8 - 6.2] + [100 - 104°] + [100 - 104°]	[42.0 - 44.8] + [100 - 104°] + [100 - 104°]
Engine hanger bolt (Front/Rear)	18.6 - 23.5	1.9 - 2.4	13.74 - 17.35
Cylinder block
Fly wheel bolt	127.4 - 137.2	13.0 - 14.0	94.02 - 101.26
Lower crankcase mounting bolt	29.4 - 33.3	3.0 - 3.4	21.7 - 24.6
Connecting rod bearing cap bolt	[17.7 - 21.6] + [88 - 92°]	[1.8 - 2.2] + [88 - 92°]	[13.0 - 15.9] + [88 - 92°]
Main bearing cap bolt	[27.5 - 31.4] + [150 - 155°]	[2.8 - 3.2] + [150 - 155°]	[20.3 - 23.1] + [150 - 155°]
Piston cooling oil jet bolt	8.8 - 10.7	0.9 - 1.1	6.90 - 7.95
Crankshaft position sensor wheel bolt	26.4 - 27.4	2.7 - 2.8	19.52 - 20.25
Lubrication system
Oil drain plug	34.3 - 44.1	3.5 - 4.5	25.31 - 32.54
Oil filter drain bolt	4.0 - 5.0	0.4 - 0.5	2.9 - 3.6
Oil cooler mounting bolt	9.8 - 11.8	1.0 - 1.2	7.2 - 8.7
Oil filter cap	25.0 - 30.0	2.6 - 3.1	18.7 - 22.4
Oil filter & cooler mounting bolt	19.6 - 23.5	2.0 - 2.4	14.46 - 17.35
Oil level gauge assembly bolt	7.8 - 11.8	0.8 - 1.2	5.78 - 8.67
Oil cooler mounting bolt	7.8 - 11.8	0.8 - 1.2	5.78 - 8.67
Oil pan bolt (M6)	19.6 - 23.5	2.0 - 2.4	14.46 - 17.35
Oil pan bolt (M9)	29.4 - 33.3	3.0 - 3.4	21.7 - 24.6
Balance shaft assembly bolt	[24.5] + [60°]	[2.5] + [60°]	[18.1] + [60°]
Oil pump chain tensioner bolt	9.8 - 11.7	1.0 - 1.2	7.23 - 8.67
Oil pump bolt	19.6 - 23.5	2.0 - 2.4	14.46 - 17.35
Oil pump sprocket bolt	19.6 - 26.4	2.0 - 2.7	14.46 - 19.52
Oil Pressure Control Solenoid Valve	9.8 - 11.8	1.0 - 1.2	7.2 - 8.7
Cooling system
Engine reservoir tank mounting bolt	7.8 - 11.8	0.8 - 1.2	5.78 - 8.67
Water pump pulley bolt	7.8 - 9.8	0.8 - 1.0	5.8 - 7.2
Water pump bolt (M6)	9.8 - 11.8	1.0 - 1.2	7.2 - 8.7
Water pump housing bolt (M8)	18.6 - 23.5	1.9 - 2.4	13.7 - 17.4
Integrated thermal management module (ITM) mounting bolt & nut	9.8 - 11.8	1.0 - 1.2	7.2 - 8.7
Water inlet fitting pipe bolt	9.8 - 11.8	1.0 - 1.2	7.2 - 8.7
Intake and exhaust system
Breather hose and pipe bolt	9.8 - 11.7	1.0 - 1.2	7.23 - 8.67
Air intake hose clamp bolt	2.9 - 4.9	0.3 - 0.5	2.16 - 3.61
Air cleaner assembly	7.8 - 9.8	0.8 - 1.0	5.8 - 7.2
Intake manifold bolt	18.6 - 23.5	1.9 - 2.4	13.74 - 17.35
Intake manifold nut	18.6 - 23.5	1.9 - 2.4	13.74 - 17.35
Intake manifold stay bolt	18.6 - 23.5	1.9 - 2.4	13.74 - 17.35
Turbo charger & exhaust manifold nut	49.0 - 53.9	5.0 - 5.5	36.2 - 39.8
Oil feed pipe eyebolt	27.5 - 31.4	2.8 - 3.2	27.5 - 31.4
Oil feed pipe bolt (Cylinder block side)	7.8 - 11.8	0.8 - 1.2	5.78 - 8.67
Oil drain pipe bolt&nut	7.8 - 11.8	0.8 - 1.2	5.78 - 8.67
Turbo charger water feed/drain pipe eyebolt	26.5 - 32.4	2.7 - 3.3	19.5 - 23.9
Turbo charger upper heat protector	7.8 - 11.8	0.8 - 1.2	5.78 - 8.67
Turbo charger lower heat protector	7.8 - 11.8	0.8 - 1.2	5.78 - 8.67
Warm up catalytic converter(WCC) V-clamp	13.7 - 16.7	1.4 - 1.7	10.1 - 12.3
WCC upper bracket nut (et nut (Cylinder block side)	39.2 - 44.1	4.0 - 4.5	23.9 - 32.5
WCC upper bracket nut (WCC side)	18.6 - 24.5	1.9 - 2.5	13.7 - 18.1
WCC stay bolt (Cylinder block side)	39.2 - 44.1	4.0 - 4.5	28.9 - 32.5
WCC stay bolt (WCC side)	18.6 - 24.5	1.9 - 2.5	13.7 - 18.1
Muffler nut	39.2 - 58.8	4.0 - 6.0	28.9 - 43.4

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