light NISSAN 350Z 2007 Z33 Engine Mechanical Workshop Manual

PRECAUTIONS
EM-3
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2006 November2007 350Z
PRECAUTIONSPFP:00001
Precautions for Procedures without Cowl Top CoverNBS003FC
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precautions for Battery ServiceNBS003FD
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
Precautions for Drain Engine Coolant and Engine OilNBS00002
Drain engine coolant and engine oil when engine is cooled.
Precautions for Disconnecting Fuel PipingNBS00003

Before starting work, make sure no fire or spark producing items are in the work area.

Release fuel pressure before disconnecting and disassembly.

After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyNBS00004

When instructed to use special service tools, use specified tools. Always be careful to work safely, avoid
forceful or uninstructed operations.

Exercise maximum care to avoid damage to mating or sliding surfaces.

Cover openings of engine system with tape or equivalent, if necessary, to seal out foreign materials.

Mark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.

When loosening bolts and nuts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be
used in the step.
Precautions for Inspection, Repair and ReplacementNBS00005
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precautions for Assembly and InstallationNBS00006

Use torque wrench to tighten bolts or nuts to specification.

When tightening bolts and nuts, 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.

Dowel pins are used for several parts alignment. When replacing and reassembling with dowel pins, make
sure that dowel pins are installed in the original portion.

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.
PIIB3706J

EM-4
PRECAUTIONS
Revision: 2006 November2007 350Z

After repairing, start engine and increase engine speed to check engine coolant, fuel, engine oil, and
exhaust gases for leakage.
Parts Requiring Angle TighteningNBS00007

Use angle wrench [SST: KV10112100 (BT8653-A)] for the final tightening of the following engine parts:
–Cylinder head bolts
–Lower cylinder block bolts
–Connecting rod cap bolts

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 GasketNBS00008
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.

Tap seal cutter to insert it, and then slide it by tapping on the
side as shown in the figure.

In areas where seal cutter (SST) is difficult to use, use plastic
hammer to lightly tap the parts, to remove it.
CAUTION:
If for some unavoidable reason tool such as 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 gasket
application surface and the mating surface.

Remove liquid gasket completely from the groove of the gas-
ket 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-45, "
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 liquid gasket application, apply liquid
gasket to the groove.
PBIC0002E
PBIC0003E
EMA0622D

EM-50
FRONT TIMING CHAIN CASE
Revision: 2006 November2007 350Z
d. Tighten mounting bolts to the specified torque in numerical order
as shown in the figure.

There are two types of mounting bolts. Refer to the following
for locating bolts.
e. After all bolts tightened, retighten them to the specified torque in numerical order as shown in the figure.
5. Install two mounting bolts in front of oil pan (upper) in numerical
order as shown in the figure.
6. Install oil pan (lower). Refer to EM-26, "
OIL PAN AND OIL STRAINER" .
7. Install right and left valve timing control covers as follows.
a. Install new seal rings (1) in shaft grooves.
CAUTION:
When replacing seal ring, replace all rings with new one.
b. To check the joint between dowel pins and dowel pin holes,
check the looseness in the axle direction by pushing the mating
surface of magnet retarder (A) at several places and the circum-
ferential looseness (between dowel pins and dowel pin holes) by
twisting in the circumferential direction.
CAUTION:
Always perform this procedure when removing because the
gap between dowel pins and dowel pin holes may not be
caused on purpose.M10 bolts : 1, 2, 3, 4, 5, 6, 7
: 55.0 N·m (5.6 kg-m, 41 ft-lb)
M6 bolts : Except the above
: 12.7 N·m (1.3 kg-m, 9 ft-lb)
PBIC4968E
: 17.2 N·m (1.8 kg-m, 13 ft-lb)
: Engine front
PBIC4967E
A : Left bank
PBIC4973E
B : Moves slightly
C : Not shaken
PBIC4974E

TIMING CHAIN
EM-69
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2006 November2007 350Z
c. Tighten mounting bolts to the specified torque in numerical order
as shown in the figure.

There are two types of mounting bolts. Refer to the following
for locating bolts.
d. After all bolts are tightened, retighten them to the specified
torque in numerical order shown in the figure.
CAUTION:
Be sure to wipe off any excessive liquid gasket leaking on surface mating with oil pan (upper).
e. After installing front timing chain case, check the surface height
difference between the following parts on the oil pan (upper)
mounting surface.

If not within standard, repeat the installation procedure.
14. Install right and left valve timing control covers as follows:
a. Install new seal rings (1) in shaft grooves.
CAUTION:
When replacing seal rings, replace all rings with new one.
b. To check the joint between dowel pins and dowel pin holes,
check the looseness in the axle direction by pushing the mating
surface of magnet retarder (A) at several places and the circum-
ferential looseness (between dowel pins and dowel pin holes) by
twisting in the circumferential direction.
CAUTION:
Always perform this procedure when removing because the
gap between dowel pins and dowel pin holes may not be
caused on purpose.M8 bolts : 1, 2, 3, 4, 5, 6, 7
: 55.0 N·m (5.6 kg-m, 41 ft-lb)
M6 bolts : Except the above
: 12.7 N·m (1.3 kg-m, 9 ft-lb)
1 : Front timing chain case
2 : Rear timing chain case
3 : Lower cylinder block
Standard
Front timing chain case to rear timing chain case:
–0.14 to 0.14 mm (–0.005 to 0.0055 in)
PBIC4968E
PBIC4981E
A : Left bank
PBIC4973E
B : Moves slightly
C : Not shaken
PBIC4974E

CAMSHAFT
EM-77
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2006 November2007 350Z
INSTALLATION
1. Install timing chain tensioners (secondary) (1) on both sides of
cylinder head.

Install timing chain tensioner with its stopper pin (C) attached.

Install timing chain tensioner with sliding part facing down-
ward on right-side cylinder head, and with sliding part facing
upward on left-side cylinder head.
2. Install valve lifter.

Install it in the original position.
3. Install camshafts.

Follow your identification marks made during removal, or fol-
low the identification marks that are present on new cam-
shafts for proper placement and direction.

Install camshaft so that and dowel pin (A) on front end face
are positioned as shown in the figure. (No. 1 cylinder TDC on
its compression stroke)
NOTE:
Though camshaft does not stop at the portion as shown in the
figure, for the placement of cam nose, it is generally accepted
camshaft is placed for the same direction of the figure.
A : Right bank
B : Left bank
PBIC5045E
: Engine front
Bank INT/EXHDowel
pin (1)Paint marks
Identification
mark (D)
M1 (E) M2 (F) M3 (C)
RHINT (A) Yes Green No Light blue 1E
EXH (B) Yes No Green Light blue 1F
LHINT (A) Yes Green No Light blue 1G
EXH (B) Yes No Green Light blue 1H
PBIC5009E
1 : Crankshaft key
PBIC5010E

EM-96
CYLINDER HEAD
Revision: 2006 November2007 350Z
8. Install valve collet.

Compress valve spring with valve spring compressor, attach-
ment and adapter (SST). Install valve collet with magnet
hand.
CAUTION:
When working, take care not to damage valve lifter holes.

Tap valve stem edge lightly with plastic hammer after installa-
tion to check its installed condition.
9. Install valve lifter.

Install it in the original position.
10. Install spark plug tube.

Press-fit spark plug tube as follows:
a. Remove old liquid gasket adhering to cylinder head mounting hole.
b. Apply liquid gasket 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-45, "
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.
11. Install spark plug with spark plug wrench (commercial service
tool).
Inspection After DisassemblyNBS00011
VALVE DIMENSIONS

Check dimensions of each valve. For dimensions, refer to EM-
139, "Valve Dimensions" .

If dimensions are out of the standard, replace valve and check
valve seat contact. Refer to EM-99, "
VALVE SEAT CONTACT" .
PBIC1803E
Standard press-fit height “H”:
: 37.7 - 38.7 mm (1.484 - 1.524 in)
PBIC2638E
SEM188A

EM-132
CYLINDER BLOCK
Revision: 2006 November2007 350Z

If the calculated value exceeds the limit, select proper connecting rod bearing according to connecting rod
big end diameter and crankshaft pin journal diameter to obtain the specified bearing oil clearance. Refer
to EM-120, "
HOW TO SELECT CONNECTING ROD BEARING" .
Method of Using Plastigage

Remove oil and dust on crankshaft pin journal and the surfaces of each bearing completely.

Cut plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil
holes.

Install connecting rod bearings to connecting rod and cap, and tighten connecting rod bolts to the speci-
fied torque. Refer to E M - 111 , "
ASSEMBLY" for the tightening procedure.
CAUTION:
Do not rotate crankshaft.

Remove connecting rod bearing cap and bearing, and using
scale on plastigage bag, measure the plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the “Method by Calculation”.
MAIN BEARING OIL CLEARANCE
Method by Calculation

Install main bearings (3) to cylinder block (1) and lower cylinder
block (2), and tighten lower cylinder block bolts to the specified
torque. Refer to EM-111, "
ASSEMBLY" for the tightening proce-
dure.

Measure the inner diameter of main bearing with bore gauge.
(Bearing clearance) = (Main bearing inner diameter) – (Crankshaft
main journal diameter)

If the clearance exceeds the limit, select proper main bearing according to main bearing inner diameter
and crankshaft main journal diameter to obtain the specified bearing oil clearance. Refer to EM-122,
"HOW TO SELECT MAIN BEARING" .
Method of Using Plastigage

Remove oil and dust on crankshaft main journal and the surfaces of each bearing completely.

Cut plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil
holes.

Install main bearings to cylinder block and lower cylinder block, and tighten lower cylinder block bolts with
lower cylinder block to the specified torque. Refer to E M - 111 , "
ASSEMBLY" for the tightening procedure.
CAUTION:
Do not rotate crankshaft.
PBIC1149E
Standard : 0.035 - 0.045 mm (0.0014 - 0.0018 in)
(actual clearance)
Limit : 0.065 mm (0.0026 in)
PBIC5126J