Infiniti M45 (Y34). Manual - part 543

SERVICE DATA AND SPECIFICATIONS (SDS)

EM-109

C

D

E

F

G

H

I

J

K

L

M

A

EM

Valve Dimensions

Unit: mm (in)

Valve Guide

Unit: mm (in)

Valve head diameter “D”

Intake

36.0 - 36.3 (1.417 - 1.429)

Exhaust

31.2 - 31.5 (1.228 - 1.240)

Valve length “L”

Intake

 96.57 (3.8020)

Exhaust

94.50 (3.720)

Valve stem diameter “d”

Intake

5.972 - 5.980 (0.2351 - 0.2354)

Exhaust

5.962 - 5.970 (0.2347 - 0.2350)

Valve seat angle “

α

”

Intake

45 degrees 15

′

 - 45 degrees 45

′

Exhaust

Valve margin “T”

Intake

1.15 - 1.45 (0.0453 - 0.0571)

Exhaust

1.85 - 2.15 (0.0728 - 0.0846)

SEM188

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)

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)

Standard

Limit

Valve guide clearance

Intake

0.020 - 0.046 (0.0008 - 0.0018)

0.08 (0.003)

Exhaust

0.030 - 0.056 (0.0012 - 0.0022)

0.10 (0.004)

Projection length “L”

Intake

10.1 - 10.3 (0.398 - 0.406)

Exhaust

                               10.0 - 10.4 (0.394 - 0.409)

PBIC0184E

EM-110

SERVICE DATA AND SPECIFICATIONS (SDS)

Valve Seat

Unit: mm (in)

Valve Spring

Standard

Service

Cylinder head seat recess diameter 
(D)

Intake

37.000 - 37.016 (1.4567 - 1.4573)

37.500 - 37.516 (1.4764 - 1.4770)

Exhaust

32.200 - 32.216 (1.2677 - 1.2683)

32.700 - 32.716 (1.2874 - 1.2880)

Valve seat interference fit

Intake

0.081 - 0.113 (0.0032 - 0.0044)

Exhaust

0.064 - 0.096 (0.0025 - 0.0038)

Valve seat outer diameter (d)

Intake

37.097 - 37.113 (1.4605 - 1.4611)

37.597 - 37.613 (1.4802 - 1.4808)

Exhaust

32.280 - 32.296 (1.2709 - 1.2715)

32.780 - 32.796 (1.2905 - 1.2912)

SBIA0380E

Free height 

mm (in)

46.35 - 46.85 (1.8247 - 1.8444)

Pressure 

N (kg, lb) at height mm (in)

Installation 

165 - 189 (16.8 - 19.3,37 - 42) at 33.8 (1.331)

Valve open

290 - 330 (29.6 - 33.7, 65 - 74) at 24.4 (0.961)

Squareness mm 

(in)

2.0 (0.079)

SERVICE DATA AND SPECIFICATIONS (SDS)

EM-111

C

D

E

F

G

H

I

J

K

L

M

A

EM

CYLINDER BLOCK

Unit: mm (in)

Surface distortion

Limit

0.1 (0.004)

Cylinder bore

Inner diameter

Standard

Grade No. 1

93.000 - 93.010 (3.6614 - 3.6618)

Grade No. 2

93.010 - 93.020 (3.6618 - 3.6622)

Grade No. 3

93.020 - 93.030 (3.6622 - 3.6626)

Wear limit

0.20 (0.0079)

Out-of-round (Difference between X and Y)

0.015 (0.0006)

Taper (Difference between A and C)

0.010 (0.0004)

Main journal inner 
diameter grade
(Without bearing)

Grade No. A
Grade No. B
Grade No. C
Grade No. D
Grade No. E
Grade No. F
Grade No. G
Grade No. H
Grade No. J
Grade No. K
Grade No. L
Grade No. M
Grade No. N
Grade No. P
Grade No. R
Grade No. S
Grade No. T
Grade No. U
Grade No. V
Grade No. W
Grade No. X
Grade No. Y
Grade No. 1
Grade No. 2

68.944 - 68.945 (2.7143 - 2.7144)
68.945 - 68.946 (2.7144 - 2.7144)
68.946 - 68.947 (2.7144 - 2.7144)
68.947 - 68.948 (2.7144 - 2.7145)
68.948 - 68.949 (2.7145 - 2.7145)
68.949 - 68.950 (2.7145 - 2.7146)
68.950 - 68.951 (2.7146 - 2.7146)
68.951 - 68.952 (2.7146 - 2.7146)
68.952 - 68.953 (2.7146 - 2.7147)
68.953 - 68.954 (2.7147 - 2.7147)
68.954 - 68.955 (2.7147 - 2.7148)
68.955 - 68.956 (2.7148 - 2.7148)
68.956 - 68.957 (2.7148 - 2.7148)
68.957 - 68.958 (2.7148 - 2.7149)
68.958 - 68.959 (2.7149 - 2.7149)
68.959 - 68.960 (2.7149 - 2.7150)
68.960 - 68.961 (2.7150 - 2.7150)
68.961 - 68.962 (2.7150 - 2.7150)
68.962 - 68.963 (2.7150 - 2.7151)
68.963 - 68.964 (2.7151 - 2.7151)
68.964 - 68.965 (2.7151 - 2.7152)
68.965 - 68.966 (2.7152 - 2.7152)
68.966 - 68.967 (2.7152 - 2.7152)
68.967 - 68.968 (2.7152 - 2.7153)

Difference in 
inner diameter 
between cylinders

Standard

0.03 (0.0012)

PBIC0123E

EM-112

SERVICE DATA AND SPECIFICATIONS (SDS)

PISTON, PISTON RING AND PISTON PIN
Available Piston

Unit: mm (in)

Piston Ring

Unit: mm (in)

Piston Pin

Unit: mm (in)

Piston outer diameter “A”

Standard

Grade No. 1

92.980 - 92.990 (3.6606 - 3.6610)

Grade No. 2

92.990 - 93.000 (3.6610 - 3.6614)

Grade No. 3

93.000 - 93.010 (3.6614 - 3.6618)

0.20 (0.0079) oversize (Service)

93.180 - 93.210 (3.6685 - 3.6697)

“H” dimension

42 (1.65)

Piston pin bore diameter

Grade No. 0

21.993 - 21.999 (0.8659 - 0.8661)

Grade No. 1

              21.999 - 22.005 (0.8661 - 0.8663)

Piston to cylinder bore clearance

Standard

0.010 - 0.030 (0.0004 - 0.0012)

Limit

                                0.08 (0.0031)

PBIC0188E

Standard

Limit

Side clearance

Top

0.045 - 0.080 (0.0018 - 0.0031)

0.11 (0.0043)

2nd

0.030 - 0.070 (0.0012 - 0.0028)

0.10 (0.0039)

Oil ring

0.065 - 0.135 (0.0026 - 0.0053)

—

End gap

Top

0.22 - 0.32 (0.0087 - 0.0126)

0.56 (0.0220)

2nd

0.22 - 0.32 (0.0087 - 0.0126)

0.56 (0.0220)

Oil ring

0.20 - 0.50 (0.0079 - 0.0197)

0.86 (0.0339)

Piston pin outer diameter

Grade No. 0

 21.989 - 21.995 (0.8657 - 0.8659)

Grade No. 1

       21.995 - 22.001 (0.8659 - 0.8662)

Piston and piston pin clearance

0.002 - 0.006 (0.0001 - 0.0002)

Piston pin to connecting rod bushing oil 
clearance

Standard

0.005 - 0.017 (0.0002 - 0.0007)