Nissan Frontier. Instruction — part 730
SERVICE DATA AND SPECIFICATIONS (SDS)
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VALVE
Valve Timing
Valve Dimensions
Unit: mm (in)
Camshaft bearing surface length
25.660 - 25.685 (1.0102 - 1.0112)
Items
Limit
PBIC0283E
Valve timing
Unit: degree
a
b
c
d
e
f
236
224
-4
60
32
37
PBIC0187E
Valve head diameter “D”
Intake
35.5 - 35.8 (1.398 - 1.409)
Exhaust
30.5 - 30.8 (1.201 - 1.213)
Valve length “L”
Intake
97.16 (3.8252)
Exhaust
98.82 (3.8905)
Valve stem diameter “d”
Intake
5.965 - 5.980 (0.2348 - 0.2354)
Exhaust
5.955 - 5.970 (0.2344 - 0.2350)
SEM188A
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SERVICE DATA AND SPECIFICATIONS (SDS)
Valve Clearance
Unit: mm (in)
*: Approximately 80
°C (176°F)
Available Valve Lifter
Valve seat angle “
α”
Intake
45
°15′ - 45°45′
Exhaust
Valve margin “T”
Intake
1.1 (0.043)
Exhaust
1.3 (0.051)
Items
Cold
Hot* (reference data)
Intake
0.24 - 0.32 (0.009 - 0.013)
0.304 - 0.416 (0.012 - 0.016)
Exhaust
0.26 - 0.34 (0.010 - 0.013)
0.308 - 0.432 (0.012 - 0.017)
Thickness mm (in)
Identification mark*
6.96 (0.2740)
696
6.98 (0.2748)
698
7.00 (0.2756)
700
7.02 (0.2764)
702
7.04 (0.2772)
704
7.06 (0.2780)
706
7.08 (0.2787)
708
7.10 (0.2795)
710
7.12 (0.2803)
712
7.14 (0.2811)
714
7.16 (0.2819)
716
7.18 (0.2827)
718
7.20 (0.2835)
720
7.22 (0.2843)
722
7.24 (0.2850)
724
7.26 (0.2858)
726
7.28 (0.2866)
728
7.30 (0.2874)
730
7.32 (0.2882)
732
7.34 (0.2890)
734
7.36 (0.2898)
736
7.38 (0.2906)
738
7.40 (0.2913)
740
KBIA0119E
SERVICE DATA AND SPECIFICATIONS (SDS)
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*: Always check with the Parts Department for the latest parts information.
Valve Spring
Valve Lifter
Unit: mm (in)
Valve Guide
Unit: mm (in)
Valve Seat
7.42 (0.2921)
742
7.44 (0.2929)
744
7.46 (0.2937)
746
Thickness mm (in)
Identification mark*
Items
Intake
Exhaust
Free height
43.72 - 43.92 mm (1.7213 - 1.7291 in)
45.29 - 45.49 mm (1.7831 - 1.7909 in)
Installation height
35.30 mm (1.390 in)
35.30 mm (1.390 in)
Installation load
151 - 175 N (15.4 - 17.8 kg, 34 - 39 lb)
151 - 175 N (15.4 - 17.8 kg, 34 - 39 lb)
Height during valve open
25.3 mm (0.996 in)
26.76 mm (1.0535 in)
Load with valve open
351 - 394 N (35.8 - 40.2 kg, 79 - 89 lb)
318 - 362 N (32.4 - 36.9 kg, 71 - 81 lb)
Identification color
Pink
Green
Squareness limit
1.8 mm (0.071 in)
1.9 mm (0.075 in)
Items
Standard
Valve lifter outer diameter
33.965 - 33.980 (1.3372 - 1.3378)
Valve lifter hole diameter
34.000 - 34.021 (1.3386 - 1.3394)
Valve lifter clearance
0.020 - 0.056 (0.0008 - 0.0022)
Items
Standard part
Service part
Valve guide
Outer diameter
10.023 - 10.034 (0.3946 - 0.3950)
10.223 - 10.234 (0.4025 - 0.4029)
Inner diameter (Finished size)
6.000 - 6.018 (0.2362 - 0.2369)
Cylinder head valve guide hole diameter
9.975 - 9.996 (0.3927 - 0.3935)
10.175 - 10.196 (0.4006 - 0.4014)
Interference fit of valve guide
0.027 - 0.059 (0.0011 - 0.0023)
Items
Standard
Limit
Valve guide clearance
Intake
0.020 - 0.053 (0.0008 - 0.0021)
0.08 (0.003)
Exhaust
0.030 - 0.063 (0.0012 - 0.0025)
0.09 (0.004)
Projection length “L”
Intake
10.1 - 10.3 (0.398 - 0.406)
Exhaust
10.0 - 10.4 (0.394 - 0.409)
PBIC0184E
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SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
*
1
: Diameter made by intersection point of conic angles
α1 and α2
*
2
: Diameter made by intersection point of conic angles
α2 and α3
*
3
: Machining data
Valve Seal
Unit: mm (in)
Spark Plug Tube
Unit: mm (in)
CAMSHAFT AND CAMSHAFT BEARING
Items
Standard
Oversize [0.5 (0.02)] (Service)
Cylinder head seat recess diameter “D”
Intake
36.500 - 36.516 (1.4370 - 1.4376)
37.000 - 37.016 (1.4567 - 1.4573)
Exhaust
31.500 - 31.516 (1.2402 - 1.2408)
32.000 - 32.016(1.2598 - 1.2605)
Valve seat outer diameter “d”
Intake
36.597 - 36.613 (1.4408 - 1.4415)
37.097 - 37.113 (1.4605 - 1.4611)
Exhaust
31.600 - 31.616 (1.2441 - 1.2447)
32.100 - 32.116 (1.2638 - 1.2644)
Valve seat interference fit
Intake
0.081 - 0.113 (0.0032 - 0.0044)
Exhaust
0.084 - 0.116 (0.0033 - 0.0046)
Diameter “d1”*
1
Intake
33.5 (1.319)
Exhaust
28.0 (1.102)
Diameter “d2”*
2
Intake
35.1 - 35.3 (1.382 - 1.390)
Exhaust
29.9 - 30.1 (1.177 - 1.185)
Angle “
α1”
Intake
60
°
Exhaust
60
°
Angle “
α2”
Intake
88
°45′ - 90°15′
Exhaust
88
°45′ - 90°15′
Angle “
α3”
Intake
120
°
Exhaust
120
°
Contacting width “W”*
3
Intake
1.05 - 1.35 (0.0413 - 0.0531)
Exhaust
1.25 - 1.55 (0.0492 - 0.0610)
Height “h”
Intake
5.9 - 6.0 (0.232 - 0.236)
5.0 - 5.1 (0.197 - 0.201)
Exhaust
5.9 - 6.0 (0.232 - 0.236)
4.91 - 5.01 (0.1933 - 0.1972)
Depth “H”
6.0 (0.236)
PBIC2745E
Items
Standard
Valve seal installed height
11.8 - 12.4 (0.465 - 0.488)
Items
Standard
Spark plug tube installed height
41.2 - 42.2 (1.622 - 1.661)
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