LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2011 >> Sentra S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical (Qr25DE)) >> Service Information >> Service Data And Specifications (SDS) >> Standard and Limit >> Valve

Standard and Limit: Valve

WARNING: This page is about a different variant/trim than selected.

Valve Dimensions

VALVE SPECIFICATIONS

Unit: mm (in)
G07137630Courtesy of NISSAN MOTOR CO., U.S.A.
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)
Valve seat angle "α" Intake 45°15- - 45°45-
Exhaust
Valve margin "T" Intake 1.1 (0.043)
Exhaust 1.3 (0.051)

Valve Clearance

VALVE CLEARANCE

Unit: mm (in)
  Cold(1) (reference data) Hot
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)
(1) Approximately 20°C (68°F)

Available Valve Lifter

VALVE LIFTER SPECIFICATIONS

G07137631Courtesy of NISSAN MOTOR CO., U.S.A.
Thickness mm (in) Identification mark (Stamp)(1)
7.88 (0.3102) 788U
7.90 (0.3110) 790U
7.92 (0.3118) 792U
7.94 (0.3126) 794U
7.96 (0.3134) 796U
7.98 (0.3142) 798U
8.00 (0.3150) 800U
8.02 (0.3157) 802U
8.04 (0.3165) 804U
8.06 (0.3173) 806U
8.08 (0.3181) 808U
8.10 (0.3189) 810U
8.12 (0.3197) 812U
8.14 (0.3205) 814U
8.16 (0.3213) 816U
8.18 (0.3220) 818U
8.20 (0.3228) 820U
8.22 (0.3236) 822U
8.24 (0.3244) 824U
8.26 (0.3252) 826U
8.28 (0.3260) 828U
8.30 (0.3268) 830U
8.32 (0.3276) 832U
8.34 (0.3283) 834U
8.36 (0.3291) 836U
8.38 (0.3299) 838U
(1) Always check with the Parts Department for the latest parts information O

Valve Spring

VALVE SPRING SPECIFICATIONS

Specifications(1) Intake Exhaust
Identification color Blue (M/T), Pink (CVT) Yellow (M/T), Green (CVT)
Free height 43.72 - 43.92 mm (1.7213 - 1.7291 in) 45.29 - 45.49 mm (1.7831 - 1.7909 in)
Pressure standard at height 35.30 mm (1.390 in) 151 - 175 N (15.4 - 17.8 kg-f, 34 - 39 lb-f) 151 - 175 N (15.4 - 17.8 kg-f, 34 - 39 lb-f)
Squareness 1.9 mm (0.0748 in) 1.9 mm (0.0748 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-f, 34 - 39 lb-f) 151 - 175 N (15.4 - 17.8 kg-f, 34 - 39 lb-f)
Height during valve open 25.30 mm (0.996 in) 26.76 mm (1.0535 in)
Load with valve open 351 - 394 N (35.8 - 40.2 kg-f, 79 - 89 lb-f) 318 - 362 N (32.4 - 36.9 kg-f, 71 - 81 lb-f)
(1) Always check with the Parts Department for the latest parts information

Valve Lifter

VALVE LIFTER SPECIFICATIONS

Unit: mm (in)
Description Standard
Valve lifter outer diameter 33.977 - 33.987 (1.3377 - 1.3381)
Lifter lifter bore inner diameter 34.000 - 34.021 (1.3386 - 1.3394)
Clearance between lifter and lifter guide 0.013 - 0.044 (0.0005 - 0.0017)

Valve Guide

VALVE GUIDE SPECIFICATIONS

Unit: mm (in)
G07137632Courtesy of NISSAN MOTOR CO., U.S.A.
Description Standard Service
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)
Intake and exhaust 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)
  Standard
Valve guide clearance Intake 0.020 - 0.053 (0.0008 - 0.0021) or less
Exhaust 0.030 - 0.063 (0.0012 - 0.0025) or less
Projection length "L" Intake 10.1 - 10.3 (0.398 - 0.406)
Exhaust 10.0 - 10.4 (0.394 - 0.409)

Valve Seat

VALVE SEAT SPECIFICATIONS

Unit: mm (in)
G07137633Courtesy of NISSAN MOTOR CO., U.S.A.
  
Description Standard 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 interference fit Intake 0.081 - 0.113 (0.0032 - 0.0044)
Exhaust 0.084 - 0.116 (0.0033 - 0.0046)
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)
Diameter "d1" Intake 33.5 (1.319)
Exhaust 28.0 (1.102)
Diameter "d2" Intake 34.8 - 35.3 (1.3701 - 1.3898)
Exhaust 29.6 - 30.1 (1.1654 - 1.1850)
Angle α 1 Intake 60°
Exhaust 60°
Angle α 2 Intake 88° 46' - 90° 14'
Exhaust 88° 46' - 90° 14'
Angle α 3 Intake 120°
Exhaust 120°
Contacting width "W"(1) Intake 0.99 - 1.35 (0.0390 - 0.0531)
Exhaust 1.19 - 1.55 (0.0469 - 0.0610)
(1) Machining data
scientia non olet · About LEMON Manuals