2004 INFINITI FX35 seat

EM-108
[VQ35DE]
CYLINDER HEAD
Revision: 2004 November 2004 FX35/FX45
5. Using valve seat cutter set (commercial service tool) or valve
seat grinder, finish seat to the specified dimensions.
CAUTION:
When using valve seat cutter, firmly grip the 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.
Grind to obtain the dimensions indicated.
*1 : Diameter made by intersection point of conic angles 60°
and 90°
*2 : Diameter made by intersection point of conic angles
89.5° and 120°
6. Using compound, grind to adjust valve fitting.
7. Check for normal contact again.
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.
SEM934C
Standard:
D1 dia.: 35 mm (1.38 in)*
1
D2 dia.: 36.6 - 36.8 mm (1.441 - 1.449 in)*2
D3 dia.: 28.7 mm (1.130 in)*1
D4 dia.: 30.6 - 30.8 mm (1.205 - 1.213 in)*2
SBIA0531E
Limit : Less than 2.1 mm (0.083 in)
PBIC0080E

CYLINDER BLOCK
EM-127
[VQ35DE]
C
D
E
F
G
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MA
EM
Revision: 2004 November 2004 FX35/FX45
5. Install main bearings and thrust bearings.
a. Remove dust, dirt, and engine oil on the bearing mating sur-
faces of cylinder block and main bearing cap.
b. Install thrust bearings to the both sides of No. 3 journal housing
on cylinder block and main bearing cap.

Install thrust bearings with the oil groove facing to the crank-
shaft arm (outside).

Install bearing with a projection on one end on cylinder block,
and bearing with a projection at center on cap. Align each pro-
jection with mating notch.
c. Install main bearings paying attention to the direction.

Main bearing with an oil hole and groove goes on cylinder
block. The one without them goes on main bearing cap.

Before installing bearings, apply engine oil to the bearing sur-
face (inside). Do not apply engine oil to the back surface, but
thoroughly clean it.

When installing, align the bearing stopper to the notch.

Ensure the oil holes on cylinder block and those on the corre-
sponding bearing are aligned.
6. Install crankshaft to cylinder block.

While turning crankshaft by hand, make sure it turns
smoothly.
7. Install main bearing cap.

Main bearing caps are identified by identification mark cast on
them. For installation, face front mark to front side.
NOTE:
Main bearing cap cannot be replaced as a single part,
because it is machined together with cylinder block.
8. Install main bearing beam.

Install main bearing beam with front mark facing downward
(oil pan side).

Install main bearing beam with front mark facing front of
engine.
9. Inspect outer diameter of main bearing cap bolt. Refer to EM-
144, "MAIN BEARING CAP BOLT OUTER DIAMETER" .
10. Install main bearing cap bolt.
a. Apply new engine oil to threads and seat surfaces of mounting
bolts.
b. Tighten bolts in numerical order with tightening torque in several
different steps.
PBIC0807E
SEM175F
SEM456G
PBIC0881E
: 35.3 N·m (3.6 kg-m, 26 ft-lb)
SEM851E

CYLINDER BLOCK
EM-129
[VQ35DE]
C
D
E
F
G
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MA
EM
Revision: 2004 November 2004 FX35/FX45
14. Install connecting rod bearings to connecting rod and connect-
ing rod cap.

When installing connecting rod bearings, apply engine oil to
the bearing surface (inside). Do not apply engine oil to the
back surface, but thoroughly clean it.

When installing, align connecting rod bearing stopper protru-
sion with the cutout of connecting rod to install.

Check the oil hole on connecting rod and that on the corre-
sponding bearing are aligned.
15. Install piston and connecting rod assembly to crankshaft.

Position crankshaft pin corresponding to connecting rod to be
installed onto the bottom dead center.

Apply engine oil sufficiently to cylinder bore, piston and crank-
shaft pin.

Match cylinder position with the cylinder number on connect-
ing rod to install.

Using a piston ring compressor (SST) or suitable tool, install
piston with the front mark on the piston crown facing the front
of engine.
CAUTION:
Be careful not to damage cylinder wall and crankshaft pin, resulting from an interference of con-
necting rod big end.
16. Install connecting rod cap.

Match the stamped cylinder number marks on connecting rod
with those on cap to install.

Be sure that front mark on connecting rod cap is facing front
of engine.
17. Tighten connecting rod bolt as follows.
a. Apply engine oil to the threads and seats of connecting rod
bolts.
b. Tighten bolts.
c. Then tighten all bolts “90” degrees clockwise (Angle tightening).
CAUTION:
Always use an angle wrench [SST: KV10112100 (BT8653-
A)]. Avoid tightening based on visual check alone.

After tightening bolt, make sure that the crankshaft rotates
smoothly.

Check the connecting rod side clearance. Refer to EM-136, "CONNECTING ROD SIDE CLEARANCE"
18. Install baffle plate to main bearing beam.
PBIC0266E
SEM620
PBIC0809E
: 19.6 N·m (2.0 kg-m, 14 ft-lb)
SEM953E

EM-150
[VQ35DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2004 November 2004 FX35/FX45
CYLINDER HEAD
Unit: mm (in)
Valve Dimensions
Unit: mm (in) Items Standard Limit
Head surface distortion 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 (1.4567 - 1.4685)
Exhaust 31.2 - 31.5 (1.228 - 1.240)
Valve length “L”Intake 96.37 (3.7941)
Exhaust 93.90 (3.6968)
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 margin “T” limitMore than 0.5 (0.020)
Valve stem end surface grinding limit Less than 0.2 (0.008)
SEM188

EM-152
[VQ35DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2004 November 2004 FX35/FX45
Valve Seat
Unit: mm (in)
Valve Spring
Items Standard Oversize [0.5 (0.020)] (Service)
Cylinder head seat recess diameter “D”Intake 38.000 - 38.016 (1.4961 - 1.4967) 38.500 - 38.516 (1.5157 - 1.5164)
Exhaust 32.200 - 32.216 (1.2677 - 1.2683) 32.700 - 32.716 (1.2874 - 1.2880)
Valve seat interference fitIntake 0.081 - 0.113 (0.0032 - 0.0044)
Exhaust 0.064 - 0.096 (0.0025 - 0.0038)
Valve seat outer diameter “d”Intake 38.097 - 38.113 (1.4999 - 1.5005) 38.597 - 38.613 (1.5196 - 1.5202)
Exhaust 32.280 - 32.296 (1.2709 - 1.2715) 32.780 - 32.796 (1.2905 - 1.2912)
Items Standard Service
Height “h”Intake 5.9 - 6.0 (0.232 - 0.236) 5.05 - 5.15 (0.1988 - 0.2028)
Exhaust 5.9 - 6.0 (0.232 - 0.236) 4.95 - 5.05 (0.1949 - 0.1988)
Depth “H”5.9 - 6.1 (0.232 - 0.240)
Depth “L”Intake 41.07 - 41.67 (1.6169 - 1.6405)
Exhaust 41.00 - 41.60 (1.6142 - 1.6378)
SEM021EB
SEM621F
Free height mm (in)47.07 (1.8531)
Pressure N (kg, lb) at height mm (in)Installation 166 - 188 (16.9 - 19.2, 37.3 - 42.3) at 37.0 (1.4567)
Valve open 373 - 421 (38.0 - 42.9, 83.9 - 94.6) at 27.2 (1.0709)
Out-of-square mm (in) Limit Less than 2.1 (0.083)

EM-160
[VK45DE]
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45

When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is speci-
fied, do exactly as specified.

Replace with new gasket, packing, oil seal or O-ring.

Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for
any restriction and blockage.

Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.

Release air within route when refilling after draining engine coolant.

After repairing, start engine and increase engine speed to check engine coolant, fuel, oil, and exhaust
systems for leakage.
Parts Requiring Angle TighteningABS006I0

Use angle wrench [SST: KV10112100 (BT8653-A)] for the final tightening of the following engine parts:
–Cylinder head bolts
–Main bearing cap bolts
–Connecting rod cap nuts
–Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angle
tightening)

Do not use a torque value for final tightening.

The torque value for these parts are for a preliminary step.

Ensure thread and seat surfaces are clean and coated with engine oil.
Precautions for Liquid GasketABS006I1
REMOVAL OF LIQUID GASKET SEALING

After removing mounting bolts and nuts, separate the mating
surface using seal cutter (SST) and remove old liquid gasket
sealing.
CAUTION:
Be careful not to damage the mating surfaces.

In areas where seal cutter (SST) is difficult to use, use plastic
hammer to lightly tap the areas where liquid gasket is applied.
CAUTION:
If for some unavoidable reason tool such as a flat-blade
screwdriver is used, be careful not to damage the mating
surfaces.
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.
PBIC0002E
PBIC0003E

PREPARATION
EM-165
[VK45DE]
C
D
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EM
Revision: 2004 November 2004 FX35/FX45
Valve seat cutter set Finishing valve seat dimensions
Piston ring expander Removing and installing piston ring
Valve guide drift Removing and installing valve guide
Intake and Exhaust:
a: 9.5 mm (0.374 in) dia.
b: 5.5 mm (0.217 in) dia.
Valve guide reamer (1): Reaming valve guide inner hole
(2): Reaming hole for oversize valve guide
Intake and Exhaust:
d
1 : 6.0 mm (0.236 in) dia.
d
2 : 10.2 mm (0.402 in) dia.
(J-43897-18)
(J-43897-12)
Oxygen sensor thread cleanerReconditioning the exhaust system threads
before installing a new heated oxygen
sensor (Use with anti-seize lubricant shown
below.)
a: J-43897-18 (18 mm dia.) for zirconia
heated oxygen sensor
b: J-43897-12 (12 mm dia.) for titania
heated oxygen sensor
Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL
specification MIL-A-907)Lubricating oxygen sensor thread cleaning
tool when reconditioning exhaust system
threads (Kent-Moore No.)
Tool nameDescription
S-NT048
S-NT030
S-NT015
S-NT016
AEM488
AEM489

EM-206
[VK45DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
b. Install new O-rings on front cover.
c. Apply a continuous bead of liquid gasket with tube presser [SST:
WS3930000 ( — )] to intake valve timing control covers as
shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS".
d. Tighten mounting bolts in numerical order as shown in the fig-
ure.
12. Install intake valve timing control position sensor, intake valve timing control solenoid valve and camshaft
position sensor (PHASE) to intake valve timing control cover and front cover if removed.

Be sure to tighten bolts with flanges completely seated.
13. Install oil pan and oil strainer. Refer to EM-181, "
OIL PAN AND OIL STRAINER" .
14. Install crankshaft pulley as follows:
a. Fix crankshaft with ring gear stopper [SST: J-45476].
b. Install crankshaft pulley, taking care not to damage front oil seal.

Install according to dowel pin of oil pump drive spacer.

Lightly tapping its center with plastic hammer, insert pulley.
CAUTION:
Do not tap pulley on the side surface where belt is installed (outer circumference).
c. Apply engine oil onto threaded parts of crankshaft pulley bolt and seating area.
d. Tighten crankshaft pulley bolt.
e. Put a paint mark on crankshaft pulley aligning with angle mark on crankshaft pulley bolt.
SBIA0374E
SBIA0375E
PBIC0051E
: 93.1 N·m (9.5 kg-m, 69 ft-lb)