2.6 Engine Mechanical System JL4G18-
D

2.6.1 Specifications
2.6.1.1 Fastener Tightening Specifications

Applications

Model

Specifications

Metric (Nm)

US English (lb-ft)

Spark Plug Bolt

M14 × 1.25

20-30

14.8-22.2

Cylinder Head Cover (Short Bolt)

M6

7-11

5.2-8.2

Cylinder Head Cover (Long Bolts,
Nuts, Special Bolts)

M6

9-13

6.7-9.6

Knock Sensor Bolt

M8 × 30

14.4-21.6

10.7-16

Cylinder Head Bolts

M10 × 1.25

First Pass 46-52

First Pass 34-38.5

Second Pass 76-84

Second Pass 56-62.2

VVT Actuator Mounting Bolt

M12 × 1.25

59-81

43.7-60

Intake Manifold Mounting Bolt

M8

24-36

17.8-26.7

Crankcase Mounting Bolt

M8

14.4-21.6

10.7-16

Exhaust Pipe Mounting Bolt

M8

20-30

14.8-22.2

Main Bearing Cap Installation Bolt

M10 × 1.25

First Pass 42-46

First Pass 31-34

Second Pass 54-66

Second Pass 40-48.9

Flywheel Mounting Bolt

M10 × 1.25

83-93

61.4-68.8

Engine Water Pump Short
Mounting Bolt

M6 × 25

8-10

6-7.4

Engine Water Pump Long Mounting
Bolt

M6 × 35

9-13

6.7-9.6

Fuel Rail Bolt

M6 × 20

7.2-10.8

5.3-8

Connecting Rod Cap Bolt

M8 × 1

First Pass 19-21

First Pass 14-15.5

Second Pass 50-52

Second Pass 37-38.5

Camshaft Bearing Cap Bolt

M8 M6

21.6-24.5
12.2-13.8

16-18.2

9-10.2

Oil Pan Bolt

M6

7.2-10.8

5.3-8

Oil Filter Mounting Bolt

M6

7.2-10.8

5.3-8

Engine Oil Pressure Alarm Bolt

R1 / 8

10.5-19.5

7.8-14.4

Oil Filter Pipe Joint Bolt

M28 × 1.5

16-24

11.8-17.8

Oil Filter - Pipe Fittings Bolt

UNF3 / 4 "-16

33-37

24.4-27.4

Crankshaft Pulley Mounting Bolt

M12 × 1.25

129.7-146.3

96-108.3

Engine

Engine Mechanical System JL4G18-D

2-299

Applications

Model

Specifications

Metric (Nm)

US English (lb-ft)

Generator Screw

M10 × 1.25 × 72

43.2-64.8

32-48

Generator Bolt

M8 × 30

20-30

14.8-22.2

Clutch Assembly Mounting Bolt

M8

21.6-32.4

16-24

Coolant Valve Bolt

M10

25 and Above

18.5 and Above

Oil Pump Mounting Bolt

M6

7.2-10.8

5.3-8

Timing Chain Cover Bolt

M8

14.4-21.6

10.7-16

Timing Chain Cover Bolt

M6

8.8-13.2

6.5-9.8

Right Engine Mounting Bracket Bolt

M10 × 55

37.6-56.4

27.8-41.7

Drive Belt Tensioner Bolt

M12

55.2-82.8

40.8-61.3

Drive Belt Tensioner Nut

M8

23.2-34.8

17.2-25.8

Exhaust Camshaft Timing Sprocket
Mounting Bolt

M10

43.2-64.8

32-48

Oil Pan Oil Discharge Bolt

M12

25-35

18.5-25.9

2.6.1.2 Mechanical System Specification

Items

Specifications

Bore (mm/in)

79/3.11

Stroke (mm/in)

91.5/3.6

Displacement (L)

1.792

Compression Ratio

10:1

Power (km/rpm)

102/6,000-6,200

Torque (Nm/rpm)

172/4,100-4,300

Idle Speed (rpm)

800 ± 50 (Air Conditioning A/CON 1,000 ± 50)

ASM Emissions (g/km)

CO is less than 2.3; CH is less than 0.2; NO

X

is less than 0.15

Ignition Sequence

1-3-4-2 (cylinder No.1,4 and cylinder No.2,3 group ignition)

Constant Driving Speed Fuel Consumption (90 km/h) (L/100
km)

Less than 6.5

Fuel

RON93 Unleaded Gasoline or Above

Engine Coolant Capacity (L/pt)

6.5/11.44

Engine Oil Capacity (L/pt)

4.0/7.04

Engine Coolant Specifications / Grades

Line SH0521 (Freezing Point 

≤-40°C (-40 ºF)

2-300

Engine Mechanical System JL4G18-D

Engine

Items

Specifications

Lubricant Specification / Grades

Meet GB11121 standard, API quality grade SJ-class, SL-class
exports to the EU statement, viscosity: SAE5W-30, 10W-30,
10W-40, 15W-40

Spark Plug Type

K6RTC

Spark Plug Gap (mm/in)

1.0-1.1/0.03-0.04

Dry Mass (kg/lb)

Without starter, with the engine oil, coolant, with wiring harness,
with the clutch 117 ± 2/257.94 ± 4.41

Overall Dimension (LxWxH) mm/in

631 × 610 × 620/24.84 × 24.02 × 24.41

Cam

Journal Diameter (mm/in)

23/0.91

Camshaft Axial Clearance (mm/in)

0.05-0.12/0.0020-(-0.0047)

Intake Valve Clearance (mm/in)

0.23 ± 0.03/0.0091 ± 0.0011

Exhaust Valve Clearance (mm/in)

0.32 ± 0.03/0.0126 ± 0.0011

Intake VVT Adjustment Range

± 25 °

Valve Timing

Intake Valve Open

19 ° Before TDC

Intake Valve Close

73 ° After BDC

Exhaust Valve Open

53 ° Before BDC

Exhaust Valve Close

16.5 ° After TDC

Crank Pin

Connecting Rod Bearing Clearance (mm/in)

0.020-0.044/0.0007-0.0017

Connecting Rod Bearing Axial Clearance (mm/in)

0.16-0.342/0.006-0.0135

Crankshaft

Axial Clearance (mm/in)

0.04-0.24/0.0015-0.0094

Main Bearing Clearance - All (mm/in)

0.015-0.033/0.0006-0.0013

Spindle Collar Diameter - All (mm/in)

47.982-48/1.8891-1.8898

Body Top Surface Flatness (mm/in)

0.05/0.0019

Crankshaft Main Journal Roundness (mm/in)

0.003/0.0001

Crankshaft Main Journal Round Beating Degree (mm/in)

0.02/0.0008

Cylinder Head

Minimal Height After Machining (mm/in)

115-0.05/4.53-0.0019

Overall Height (mm/in)

115 +0.05 / 4.53 +0.0019

Valve Guide Hight (mm/in)

34.5/1.36

Engine

Engine Mechanical System JL4G18-D

2-301

Items

Specifications

Pistons

Gap With The Cylinder (mm/in)

0.060-0.083/0.0023-0.0033

Diameter (mm/in)

78.9/3.11

Piston Pin

Gap With The Piston (mm/in)

0.005-(-0.001) / 0.0002-(-0.00003)

Gap With The Rod (mm/in)

0.005-0.011/0.0002-0.0004

Diameter (mm/in)

20/0.787

Length (mm/in)

50/1.969

Piston Pin Offset - Thrust (mm/in)

0.6/0.0236

Oil Pump

Safety Valve Opening Pressure (kPa/psi)

500/72.52

Piston Ring

Oil Ring End Gap (mm/in)

0.20-0.70/0.0079-0.0276

Second Compression Ring End Gap (mm/in)

0.40-0.55/0.0157-0.0217

First Compression Ring End Gap (mm/in)

0.25-0.35/0.0098-0.0138

Sealants and Adhesives

Cylinder Head Covers Mat Sealant

Kesaisi New 1596 Flat Silicone Rubber Sealants

Engine Oily Road Cones

Kesaisi New 1243 Anaerobic Thread Locking Sealant

Oil Pan and Crank Box Joints

Kesaisi New 1596 Flat Silicone Rubber Sealants

Crankcase With The Cylinder Block Joints

Kesaisi New 1596 Flat Silicone Rubber Sealants

Flywheel Bolt

Letai 204 Anaerobic Sealant

Valve System

Intake Valve Diameter (mm/in)

31/1.2

Exhaust Valve Diameter (mm/in)

26 / 1

Valve Tube Diameter (mm/in)

5.5/0.22

Valve Stem Diameter - Intake Valve (mm/in)

5.5/0.22

Valve Stem Diameter - Exhaust Valve (mm/in)

5.5/0.22

2.6.1.3  Intake  and  Exhaust  Valves  Lifter
Specifications Table

Packet No.

Thickness (mm/in)

Packet No.

Thickness (mm/in)

06

5.06 (0.1992)

42

5.42 (0.2134)

08

5.08 (0.2000)

44

5.44 (0.2142)

2-302

Engine Mechanical System JL4G18-D

Engine