Specifications Volkswagen Transporter T4

Petrol 4 cylinders.

Diesel 4 cylinders.

Diesel 5 cylinders.

VR6

Code

AAC

IX

AAB

AES

Volume, dm3

2.0

1.9

2.4

2.8

Power, kW (hp)

62 (85)

64 (88)

45 (62)

57 (78)

103

- at rotational speed, rpm

5200

3700

3700

5800

Maximum torque, Nm

159

127

164

225

- at rotational speed, rpm

2200

1700-2500

1800-2200

4200

Piston stroke, mm

92.8

95.5

95.5

90.3

Compression ratio

8.8:1

22.5:1

23.0:1

10.0:1

Valve timing

- Opening the intake valve

3º before TDC

6º before TDC

6º before TDC

-

- Closing the intake valve

19º before BDC

20º after BDC

0º after TDC

- Opening the exhaust valve

27º before BDC

25.5º after BDC

25.5º after BDC

- Closing the exhaust valve

5º after TDC

6.5º after TDC

6.5º after TDC

Ignition order

1-3-4-2

1-3-4-2

1-2-4-5-3

1-5-3-6-2-4

Oil pressure, kg/cm2 (MPa)

- minimum

82,51

79,51

79,51

81,01

- maximum

82,76

79,76

79,76

81,51

- at frequency XX

83,01

80,03

80,03

82,01

Cylinder diameter

- nominal , mm

- 1 repair , mm

- 2 repair , mm

HEAD AND VALVES - specifications Volkswagen Transporter T4

valve guides

- installation temperature

cold head

cold head

cold head

cold head

- inner diameter, mm

8,013-8,035

8,013-8,035

8,013-8,035

7,013-7,035

Backlash of valve stems, mm

- inlet valves

1,0

1,3

1,3

1,0

- exhaust valves

1,3

1,3

1,3

1,3

Seat diameter, mm

- inlet valves

40,0

36,0

36,0

38,3

- exhaust valves

33,0

31,0

31,0

33,5

Valve face angle

45º

45º

45º

45º

Upper correction angle

30º

15º

15º

30/75º

Working chamfer width, mm

- inlet valves

2,0

2,4

2,4

1,7

- exhaust valves

2,05

2,7

2,7

2,0

Valve disc diameter, mm

- intake valves

40,00

36,00

36,00

39,00

- exhaust valves

33,00

31,00

31,00

34,20

Valve length, mm

- intake valves

91,00

95,00

95,00

106,25

- exhaust valves

90,8

95,0

95,0

106,95

Rod diameter, mm

- intake valves

7,97

7,97

7,97

6,97

- exhaust valves

7,95

7,95

7,95

6,95

Valve disc edge width, mm

0,5

0,5

0,5

0,5

Size "A", mm

- inlet valves mm

33,80

35,80

35,80

33,90

- exhaust valves mm

34,10

36,10

36,10

34,10

PISTONS AND CONNECTING RODS - specifications Volkswagen Transporter T 4

Piston diameter, mm

- nominal

82,48

79,48

79,48

80,985

- 1 repair

82,73

79,73

79,73

81,485

- 2 repair

82,98

79,98

79,98

81,985

Piston diameter measuring point

10 mm from the bottom edge of the piston skirt, 90° from the axis of the piston pin

10 mm from the bottom edge of the piston skirt, 90° from the axis of the piston pin

10 mm from the bottom edge of the piston skirt, 90° from the axis of the piston pin

6,0

Maximum allowable piston wear, mm

0.04 (from diameter)

0.04 (from diameter)

0.04 (from diameter)

0.04 (from diameter)

Top ring

- normal

0,02-0,05

0,09-0,12

0,09-0,12

0,02-0,07

- maximum allowable

0,15

0,25

0,25

0,15

middle ring

- normal

0,02-0,05

0,05-0,08

0,05-0,08

0,02-0,07

- maximum allowable

0,15

0,25

0,25

0,15

Oil scraper ring

- normal

0,02-0,05

0,03-0,06

0,03-0,06

0,02-0,08

- maximum allowable

0,15

0,15

0,15

0,15

Piston ring lock clearance, mm

- compression ring

0,30-0,45

0,25-0,40

0,25-0,40

0,20-0,40

- oil scraper ring

0,25-0,40

0,25-0,50

0,25-0,50

0,25-0,50

Maximum allowable clearance

1,0

1,0

- 1 compression ring

1,20

1,20

1,20

1,20

- 2 compression ring

0,60

0,60

0,60

0,60

- oil scraper ring

1,20

1,20

1,20

1,20

Protrusion of pistons above the seating surface of the block head

Axial clearance of the connecting rod on the shaft, mm

0,05-0,31

0,05-0,31

0,05-0,31

0,05-0,31

- maximum allowable wear mm

0,37

0,40

0,40

0,37

Gap of a piston pin in the plug of a head of a rod, mm

-0,01…-0,02

-0,01…-0,02

-0,01…-0,02

-0,01…-0,02

Clearance in the bearing of the lower head of the connecting rod, mm

see below

see below

see below

see below

CRANKSHAFT - characteristics Conveyor T4

Number of main supports

5

6

6

7

Type of main and connecting rod bearings

thin-walled liners

thin-walled liners

thin-walled liners

thin-walled liners

Axial clearance of the crankshaft, mm

- nominal

0,07-0,17

0,18

0,18

0,07-0,17

- maximum allowable

0,25

0,25

0,25

0,25

Radial clearance in main bearings, mm

- nominal

0,03-0,08

0,016-0,075

0,016-0,075

0,02-0,06

- maximum allowable

0,17

0,16

0,16

0,10

Radial clearance in connecting rod bearings, mm

- nominal

0,02-0,076

0,02-0,076

0,02-0,076

0,01-0,06

- maximum allowable

0,12

0,08

0,08

0,10

Diameter of main journals, mm

- nominal

54,00

58,00

58,00

60,00

- 1 repair

53,75

57,75

57,75

59,75

- 2 repair

53,50

57,50

57,50

59,50

- 3 repair

53,25

57,25

57,25

59,25

Diameter of connecting rod journals, mm

- nominal

47,80

47,80

47,80

54,00

- 1 repair

47,55

47,55

47,55

53,75

- 2 repair

47,30

47,30

47,30

53,50

- 3 repair

47,05

47,05

47,05

53,25

Grinding allowance, mm

-0,022…-0,042

-0,022…-0,042

-0,022…-0,042

-0,022…-0,042

LUBRICATION SYSTEM - Specifications Volkswagen Transporter T 4

Pressure in the lubrication system, kg/cm³ (MPa):

- nominal

1,0 (0,1)

1,0 (0,1)

1,0 (0,1)

1,0 (0,1)

- maximum

7,0 (0,7)

7,0 (0,7)

7,0 (0,7)

7,0 (0,7)

Refueling volume, l

- with filter replacement

4,0

5,0

5,5

6,0

- no filter change

3,5

4,5

5,0

5,0

Oil filter

Disposable

Disposable

Disposable

Disposable

COOLING SYSTEM Volkswagen Transporter T4 - characteristics

Characteristic

with forced coolant circulation, thermostat and electric radiator fan, switched on by thermal switch

with forced coolant circulation, thermostat and electric radiator fan, switched on by thermal switch

with forced coolant circulation, thermostat and electric radiator fan, switched on by thermal switch

with forced coolant circulation, thermostat and electric radiator fan, switched on by thermal switch

Refueling volume, l

9,0

9,0

9,0

10,0

Coolant Type

VW G11

VW G11

VW G11

VW G11

Thermostat

- start of opening, °С

about 87

about 87

about 87

about 85

- full opening, °C

102

102

102

105

DICIFANT INJECTION SYSTEM

Electronic control unit number (manual transmission)

- without lambda probe

044 906 022 D

044 906 022 D

044 906 022 D

044 906 022 D

- with lambda probe

044 906 022 E

044 906 022 E

044 906 022 E

044 906 022 E

ECM Number (Automatic Transmission)

- without lambda probe

044 906 022 G

044 906 022 G

044 906 022 G

044 906 022 G

- with lambda probe

044 906 022 I

044 906 022 I

044 906 022 I

044 906 022 I

Idling frequency, rpm

880 ± 50

880 ± 50

880 ± 50

880 ± 50

Idle speed stabilization system

Valve resistance, Ohm

2.0-10.0

2.0-10.0

2.0-10.0

2.0-10.0

Control current, mA

- with disconnected connector*

about 420±30 (steady)

about 420±30 (steady)

about 420±30 (steady)

about 420±30 (steady)

- with plug connected*

about 420±30 (fluctuates)

about 420±30 (fluctuates)

about 420±30 (fluctuates)

about 420±30 (fluctuates)

- at frequency, rpm

800±25

800±25

800±25

800±25

Fuel pressure control

Fuel pressure, bar (MPa)

- vacuum tube connected

about 2.5 (0.25)

about 2.5 (0.25)

about 2.5 (0.25)

about 2.5 (0.25)

- vacuum tube disconnected

about 3.0 (0.3)

about 3.0 (0.3)

about 3.0 (0.3)

about 3.0 (0.3)

- maintained pressure after 10 minutes

not less than 2.0 (0.2)

not less than 2.0 (0.2)

not less than 2.0 (0.2)

not less than 2.0 (0.2)

Electrical resistance of the nozzle, Ohm

- at the nozzle

15-20

15-20

15-20

15-20

- when connecting the nozzle

- Nozzle No. 4

3,7-5,0

3,7-5,0

3,7-5,0

3,7-5,0

- nozzle number 3

5,0-6,7

5,0-6,7

5,0-6,7

5,0-6,7

- nozzle number 2

7,5-10,0

7,5-10,0

7,5-10,0

7,5-10,0

- Nozzle No. 1

1,5-20,0

1,5-20,0

1,5-20,0

1,5-20,0

Motronic INJECTION - Specifications

Frequency XX, rpm

650-750, not adjustable

650-750, not adjustable

650-750, not adjustable

650-750, not adjustable

CO content, %

0,4-0,8

0,4-0,8

0,4-0,8

0,4-0,8

Microprocessor part number

021 906 258

021 906 258

021 906 258

021 906 258

Fuel

AI 95

AI 95

AI 95

AI 95

Fuel supply pressure by pump, bar

3,0

3,0

3,0

3,0

IGNITION SYSTEM - Specifications Volkswagen Transporter T4

Ignition order

1-3-4-2

1-3-4-2

1-3-4-2

1-5-3-6-2-4

Ignition advance

- control value at a frequency of 2000-2500 rpm, (coolant temperature sensor connector is disconnected)

4º-8º before TDC

4º-8º before TDC

4º-8º before TDC

4º-8º before TDC

set value at a frequency of 2000 - 2500 rpm, (coolant temperature sensor connector disconnected)

6º±1º before TDC

6º±1º before TDC

6º±1º before TDC

6º±1º before TDC

Ignition Spark Test (Temperature Sensor Connector Connected)

20º±3º measured ignition timing

20º±3º measured ignition timing

20º±3º measured ignition timing

20º±3º measured ignition timing