Nissan Terrano r20e. Instruction — part 299
Valve Seat
Unit: mm (in)
SEM374G
SEM373G
SEM375G
Standard
Service
Cylinder head seat recess diameter
(D)
Intake
33.000 - 33.015 (1.2992 - 1.2998)
33.500 - 33.515 (1.3189 - 1.3195)
Exhaust
31.495 - 31.510 (1.2400 - 1.2405)
31.995 - 32.010 (1.2596 - 1.2602)
Valve seat interference fit
Intake
0.050 - 0.078 (0.0020 - 0.0031)
Exhaust
0.040 - 0.066 (0.0016 - 0.0026)
SERVICE DATA AND SPECIFICATIONS (SDS)
ZD
EM-87
Valve seat outer diameter (d)
Intake
33.065 - 33.078 (1.3018 - 1.3023)
33.565 - 33.578 (1.3215 - 1.3220)
Exhaust
31.550 - 31.561 (1.2421 - 1.2426)
32.050 - 32.061 (1.2618 - 1.2622)
Height (h)
Intake
6.75 - 6.85 (0.2657 - 0.2697)
6.75 - 6.85 (0.2657 - 0.2697)
Exhaust
7.35 - 7.45 (0.2894 - 0.2933)
7.35 - 7.45 (0.2894 - 0.2933)
Depth (L)
Intake
43.65 - 44.35 (1.7185 - 1.7461)
Exhaust
43.65 - 44.35 (1.7185 - 1.7461)
SERVICE DATA AND SPECIFICATIONS (SDS)
ZD
Valve Seat (Cont’d)
EM-88
Camshaft and Camshaft Bearing
Unit: mm (in)
Standard
Limit
Camshaft journal to bearing clearance
0.045 - 0.090 (0.0018 - 0.0035)
0.09 (0.0035)
Inner diameter of camshaft bearing
30.000 - 30.021 (1.1811 - 1.1819)
—
Outer diameter of camshaft journal
29.931 - 29.955 (1.1784 - 1.1793)
—
Camshaft runout [TIR*]
—
0.02 (0.0008)
Camshaft sprocket runout [TIR*]
Less than 0.15 (0.0059)
—
Camshaft end play
0.065 - 0.169 (0.0026 - 0.0067)
0.2 (0.008)
*: Total indicator reading
EM671
Cam height “A”
Intake
40.468 - 40.508 (1.5932 - 1.5948)
Exhaust
40.830 - 40.870 (1.6075 - 1.6091)
Wear limit of cam height
0.15 (0.0059)
Valve timing
SEM372G
Unit: degree
a
b
c
d
e
234
220
10
34
50
SERVICE DATA AND SPECIFICATIONS (SDS)
ZD
EM-89
Cylinder Block
Unit: mm (in)
SEM370G
Surface flatness
Standard
Less than 0.03 (0.0012)
Limit
0.10 (0.0039)
Cylinder bore
Inner diameter
Standard
Grade No. 1
96.000 - 96.010 (3.7795 - 3.7799)
Grade No. 2
96.010 - 96.020 (3.7799 - 3.7803)
Grade No. 3
96.020 - 96.030 (3.7803 - 3.7807)
Wear limit
0.20 (0.0079)
Out-of-round (X − Y)
Less than 0.02 (0.0008)
Taper (A − B − C)
Less than 0.02 (0.0008)
Main journal inner diameter (Without bearing)
74.981 - 75.000 (2.9520 - 2.9528)
Difference in inner diam-
eter between cylinders
Limit
Less than 0.05 (0.0020)
Piston, Piston Ring and Piston Pin
AVAILABLE PISTON
Unit: mm (in)
SEM369G
Piston skirt diameter “A”
Standard
Grade No. 1
95.950 - 95.960 (3.7776 - 3.7779)
Grade No. 2
95.960 - 95.970 (3.7779 - 3.7783)
Grade No. 3
95.970 - 95.980 (3.7783 - 3.7787)
“a” dimension
10 (0.39)
Piston pin hole diameter
32.997 - 33.005 (1.2991 - 1.2994)
Piston clearance to cylinder block
0.040 - 0.060 (0.0016 - 0.0024)
SERVICE DATA AND SPECIFICATIONS (SDS)
ZD
EM-90
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