2006 INFINITI M35 dimensions

EM-154
[VQ35DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2006 January2006 M35/M45
CYLINDER HEAD
Unit: mm (in)
Valve Dimensions
Unit: mm (in) Items Standard Limit
Head surface distortion Less than 0.03 (0.0012) 0.1 (0.004)
Normal cylinder head height “H” 126.3 - 126.5 (4.972 - 4.980) —
PBIC0924E
Valve head diameter “D”Intake 37.0 - 37.3 (1.457 - 1.469)
Exhaust 31.2 - 31.5 (1.228 - 1.240)
Valve length “L”Intake 96.46 (3.798)
Exhaust 93.99 (3.700)
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 “
”Intake
4515 - 4545Exhaust
Va l v e m a r g i n “ T ”Intake 1.1 (0.043)
Exhaust 1.3 (0.051)
Valve margin “T” limit0.5 (0.020)
Valve stem end surface grinding limit 0.2 (0.008)
SEM188

PRECAUTIONS
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Revision: 2006 January2006 M35/M45
LIQUID GASKET APPLICATION PROCEDURE
1. Using scraper, remove old liquid gasket adhering to the liquid
gasket application surface and the mating surface.
Remove liquid gasket completely from the groove of the liquid
gasket application surface, mounting bolts, and bolt holes.
2. Wipe the liquid gasket application surface and the mating sur-
face with white gasoline (lighting and heating use) to remove
adhering moisture, grease and foreign materials.
3. Attach liquid gasket tube to tube presser [SST: WS39930000
(—)].
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
4. Apply liquid gasket without breaks to the specified location with
the specified dimensions.
If there is a groove for the liquid gasket application, apply liq-
uid gasket to the groove.
As for the bolt holes, normally apply liquid gasket inside the
holes. Occasionally, it should be applied outside the holes.
Make sure to read the text of this manual.
Within five minutes of liquid gasket application, install the mat-
ing component.
If liquid gasket protrudes, wipe it off immediately.
Do not retighten mounting bolts and nuts after the installation.
Wait 30 minutes or more after installation before refilling engine with engine oil and engine coolant.
CAUTION:
If there are specific instructions in this manual, observe them.
PBIC0003E
EMA0622D
SEM159F

PREPARATION
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Revision: 2006 January2006 M35/M45
Commercial Service ToolsNBS004OF
(Kent-Moore No.)
To o l n a m eDescription
(—)
Power toolLoosening nuts and bolts
(—)
Spark plug wrenchRemoving and installing spark plug
(—)
Manual lift table caddyRemoving and installing engine
(—)
1.Compression gauge
2.AdapterChecking compression pressure
(J–24239-01)
Cylinder head bolt wrenchLoosening and tightening cylinder head bolt,
and use with angle wrench [SST:
KV10112100 (BT–8653-A)]
a: 13 (0.51) dia.
b: 12 (0.47)
c: 10 (0.39)
Unit: mm (in)
(—)
Valve seat cutter setFinishing valve seat dimensions
(—)
Piston ring expanderRemoving and installing piston ring
PBIC0190E
S-NT047
ZZA1210D
ZZA0008D
NT583
S-NT048
S-NT030

CYLINDER HEAD
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Revision: 2006 January2006 M35/M45
7. Install valve collet.
Compress valve spring with valve spring compressor, attach-
ment and adapter (SST). Install valve collet with magnetic
hand.
CAUTION:
When working, take care not to damage valve lifter holes.
Tap stem edge lightly with plastic hammer after installation to
check its installed condition.
8. Install valve lifter and adjusting shim.
Install it in the original position.
9. Install spark plug tube.
Press-fit spark plug tube as follows:
a. Remove old liquid gasket adhering to cylinder-head mounting hole.
b. Apply sealant to area within approximately 12 mm (0.47 in) from edge of spark plug tube press-fit side.
Use Genuine High Strength Locking Sealant or equivalent. Refer to GI-48, "
RECOMMENDED
CHEMICAL PRODUCTS AND SEALANTS" .
c. Using drift, press-fit spark plug tube so that its height “H” is as
specified in the figure.
CAUTION:
When press-fitting, take care not to deform spark plug
tube.
After press-fitting, wipe off liquid gasket protruding onto
cylinder head upper face.
10. Install spark plug with spark plug wrench (commercial service tool).
Inspection after DisassemblyNBS004PJ
VALVE DIMENSIONS
Check the dimensions of each valve. For the dimensions, refer
to EM-280, "
Valve Dimensions" .
If the dimensions are out of the standard, replace valve and
check the valve seat contact. Refer to EM-242, "
VA LV E S E AT
CONTACT" .
PBIC2360E
Standard press-fit height “H” :
: 38.4 - 39.4 mm (1.512 - 1.551 in)
PBIC2638E
SEM188A

CYLINDER HEAD
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Revision: 2006 January2006 M35/M45
3. Using valve guide reamer (commercial service tool), ream cylin-
der head valve guide hole.
4. Heat cylinder head to 110 to 130
C (230 to 266F) by soaking in
heated oil.
5. Using valve guide drift (commercial service tool), press valve
guide from camshaft side to the dimensions as in the figure.
WAR NING :
Cylinder head contains heat. When working, wear protec-
tive equipment to avoid getting burned.
6. Using valve guide reamer (commercial service tool), apply
reamer finish to valve guide.Valve guide hole diameter (for service parts):
Intake and exhaust
: 10.175 - 10.196 mm (0.4006 - 0.4014 in)
SEM932C
SEM008A
PBIC0078E
Standard:
Intake and exhaust
: 6.000 - 6.018 mm (0.2362 - 0.2369 in)
SEM932C

EM-242
[VK45DE]
CYLINDER HEAD
Revision: 2006 January2006 M35/M45
VALVE SEAT CONTACT
After confirming that the dimensions of valve guides and valves
are within the specifications, perform this procedure.
Apply prussian blue (or white lead) onto contacting surface of
valve seat to check the condition of the valve contact on the sur-
face.
Check if the contact area band is continuous all around the cir-
cumference.
If not, grind to adjust valve fitting and check again. If the contact-
ing surface still has “NG” conditions even after the re-check,
replace valve seat. Refer to EM-242, "
VALVE SEAT REPLACE-
MENT" .
VALVE SEAT REPLACEMENT
When valve seat is removed, replace with oversized [0.5 mm (0.020 in)] valve seat.
1. Bore out old seat until it collapses. Boring should not continue beyond the bottom face of the seat recess
in cylinder head. Set the machine depth stop to ensure this. Refer to EM-281, "
Va l v e S e a t" .
CAUTION:
Prevent to scratch cylinder head by excessive boring.
2. Ream cylinder head recess diameter for service valve seat.
Be sure to ream in circles concentric to valve guide center.
This will enable valve to fit correctly.
3. Heat cylinder head to 110 to 130
C (230 to 266F) by soaking in
heated oil.
4. Provide valve seats cooled well with dry ice. Force fit valve seat into cylinder head.
WA R N I N G :
Cylinder head contains heat. When working, wear protective equipment to avoid getting burned.
CAUTION:
Avoid directly touching cold valve seats.
SBIA0322E
Oversize [0.5 mm (0.020 in)]
Intake : 37.500 - 37.516 mm (1.4764 - 1.4770 in)
Exhaust : 32.700 - 32.716 mm (1.2874 - 1.2880 in)
SEM795A
SEM008A

CYLINDER HEAD
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Revision: 2006 January2006 M35/M45
5. Using valve seat cutter set (commercial service tool) or valve
seat grinder, finish seat to the specified dimensions. Refer to
EM-281, "
Va l v e S e a t" .
CAUTION:
When using valve seat cutter, firmly grip cutter handle with
both hands. Then, press on the contacting surface all
around the circumference to cut in a single drive. Improper
pressure on with cutter or cutting many different times may
result in stage valve seat.
6. Using compound, grind to adjust valve fitting.
7. Check again for normal contact. Refer to EM-242, "
VALVE SEAT CONTACT" .
VALVE SPRING SQUARENESS
Set try square along the side of valve spring and rotate spring.
Measure the maximum clearance between the top face of spring
and try square.
If it exceeds the limit, replace valve spring.
VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD
Check valve spring pressure at the specified spring height.
If the installation load or load with valve open is out of the standard, replace valve spring.
SEM934C
Limit : 2.0 mm (0.079 in)
PBIC0080E
Standard:
Intake and exhaust
Free height
: 46.35 - 46.85 mm (1.8247 - 1.8444 in)
Installation height
: 33.8 mm (1.331 in)
Installation load
: 165 - 189 N (16.8 - 19.3 kg, 37 - 42 lb)
Height during valve open
: 24.4 mm (0.961 in)
Load with valve open
: 290 - 330 N (29.6 - 33.7 kg, 65 - 74 lb)
SEM113

EM-272
[VK45DE]
CYLINDER BLOCK
Revision: 2006 January2006 M35/M45
If out of the standard, measure the main bearing oil clearance. Then use undersize bearing. Refer to EM-
274, "MAIN BEARING OIL CLEARANCE" .
CRANKSHAFT PIN JOURNAL DIAMETER
Measure the outer diameter of crankshaft pin journal with
micrometer.
If out of the standard, measure the connecting rod bearing oil
clearance. Then use undersize bearing. Refer to EM-273,
"CONNECTING ROD BEARING OIL CLEARANCE" .
CRANKSHAFT OUT-OF-ROUND AND TAPER
Measure the dimensions at four different points as shown in the
figure on each main journal and pin journal with micrometer.
Out-of-round is indicated by the difference in the dimensions
between “X” and “Y” at “A” and “B”.
Taper is indicated by the difference in the dimensions between
“A” and “B” at “X” and “Y”.
If the measured value exceeds the limit, correct or replace crankshaft.
If corrected, measure the bearing oil clearance of the corrected main journal and/or pin journal. Then
select the main bearing and/or connecting rod bearing. Refer to EM-274, "
MAIN BEARING OIL CLEAR-
ANCE" and/or EM-273, "CONNECTING ROD BEARING OIL CLEARANCE" .
CRANKSHAFT RUNOUT
Place V-block on precise flat table, and support the journals on
the both end of crankshaft.
Place dial indicator straight up on the No. 3 journal.
While rotating crankshaft, read the movement of the pointer on
dial indicator (total indicator reading).
If it exceeds the limit, replace crankshaft.Standard : 63.940 - 63.964 mm (2.5173 - 2.5183 in) dia.
Standard : 51.956 - 51.974 mm (2.0455 - 2.0462 in) dia.
PBIC0127E
Limit:
Out-of-round (Difference between “X” and “Y”)
: 0.015 mm (0.0006 in)
Taper (Difference between “A” and “B”)
: 0.010 mm (0.0004 in)
PBIC1685E
Standard : Less than 0.05 mm (0.002 in)
Limit : 0.10 mm (0.004 in)
PBIC2378E