Mitsubishi 4d68 User Manual

4D68 ENGINE (E-W) -

Specifications

11A-1-1

1. SPECIFICATIONS

SERVICE SPECIFICATIONS

Item

Standard value

Limit

Drive belt and glow plug

Glow plug resistance W

0.5

Timing belt

Timing belt deflection mm

4.0- 5.0

Timing belt “B” deflection mm

5.0- 7.0

Rocker arms, rocker shaft and camshaft

Camshaft cam height mm

Intake

41.90

41.40

Exhaust

41.96

41.46

Valve clearance (on cold engine) mm

Intake

0.25

Exhaust

0.35

Camshaft journal O.D. mm

30.0

Cylinder head, valves and valve springs

Cylinder head gasket surface flatness mm

Within 0.03

0.2

Cylinder head overall height mm

86.9- 87.1

Valve overall length mm

Intake

114.05

113.55

Exhaust

113.80

113.30

Thickness of valve head (margin) mm

1.5

0.7

Valve stem O.D. mm

6.0

Valve face angle

45°- 45.5°

Valve stem to guide clearance mm

0.05- 0.09

0.15

Valve spring free length mm

49.1

48.1

Valve load/installed height N/mm

240/37.9

Valve spring out-of-squareness

2° or less

Max. 4°

Valve seat valve contact width mm

0.9- 1.3

Valve stem projection mm

43.45

43.95

Valve guide I.D. mm

8.0

Valve guide projection from cylinder head upper surface mm

Cylinder head bolt shank length mm

119.7

Front case, counterbalance shafts and oil pan

Oil cooler by-pass valve dimension (L) [Normal temperature] mm

34.5

PWEE9609

Dec. 1996

Mitsubishi Motors Corporation