NISSAN 350Z 2007 Z33 Engine Mechanical Workshop Manual

CYLINDER BLOCK
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Revision: 2006 November2007 350Z
19. Remove lower cylinder block as follows:
Screw M8 bolt [Pitch: 1.25 mm (0.049 in), Length: approx. 50
mm (1.97 in)] into bolt holes (A) shown in the figure. Then
equally tighten each bolt, and remove lower cylinder block.
CAUTION:

Be careful not to damage the mating surface.

Do not tighten bolts too much.

Do not insert screw driver, this will damage the mating
surface.
20. Remove crankshaft.
21. Pull rear oil seal out from rear end of crankshaft.
22. Remove main bearings and thrust bearings from cylinder block and lower cylinder block.
CAUTION:

Identify installation positions, and store them without mixing them up.

Be careful not to drop main bearing, and to scratch the surface.
23. Remove oil jet.
ASSEMBLY
1. Fully air-blow engine coolant and engine oil passages in cylinder block, cylinder bore and crankcase to
remove any foreign material.
CAUTION:
Use a goggles to protect your eye.
: Engine front
PBIC5016E
: Engine front
PBIC5047E

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CYLINDER BLOCK
Revision: 2006 November2007 350Z
2. Install each plug to cylinder block as shown in the figure.

Apply sealant to the thread of water drain plug (1).
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-45, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .

Apply sealant to the thread of plugs (3) and (4).
Use Genuine High Strength Thread Locking Sealant or
equivalent. Refer to GI-45, "
RECOMMENDED CHEMICAL
PRODUCTS AND SEALANTS" .

Replace washers (2) with new one.

Tighten each plug as specified below.
3. Install oil jet.

Insert oil jet dowel pin into cylinder block dowel pin hole, and
tighten mounting bolts.
4. Install main bearings and thrust bearings as follows:
a. Remove dust, dirt, and engine oil on bearing mating surfaces of cylinder block and lower cylinder block.
b. Install thrust bearings to the both sides of the No. 3 journal hous-
ing on cylinder block.

Install thrust bearings with the oil groove facing crankshaft
arm (outside).

Install thrust bearing with a protrusion on one end on cylinder
block. Align each protrusion with mating notch.
: Engine front
PBIC5014E
Part Washer Tightening torque
1 No 19.6 N·m (2.0 kg-m, 14 in-lb)
3 Yes 78.0 N·m (8.0 kg-m, 58 ft-lb)
4 Yes 12.3 N·m (1.3 kg-m, 9 ft-lb)
PBIC0898E
PBIC0807E

CYLINDER BLOCK
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c. Install main bearings paying attention to the direction.

Main bearing with oil hole (B) and groove (C) goes on cylinder
block. The one without them goes on lower cylinder block.

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

When installing, align main bearing stopper protrusion to cut-
out of cylinder block and lower cylinder block.

Ensure the oil holes on cylinder block and those on the corresponding bearing are aligned.
5. Install crankshaft to cylinder block.

While turning crankshaft by hand, check that it turns smoothly.
6. Install lower cylinder block.
NOTE:
Lower cylinder block cannot be replaced as a single part, because it is machined together with cylinder
block.

Apply a continuous bead of liquid gasket with the tube presser [SST: WS39930000( — )] to lower
cylinder block as shown in the figure.
7. Inspect the outer diameter of lower cylinder block bolt. Refer to EM-133, "
LOWER CYLINDER BLOCK
BOLT OUTER DIAMETER" .
8. Install lower cylinder block bolts in numerical order as shown in the figure as follows:
a. Apply new engine oil to threads and seat surfaces of lower cylinder block bolts.
b. Tighten lower cylinder block bolt (No.17 to 26) in numerical order
as shown in the figure.
c. Repeat step b.
d. Tighten lower cylinder block bolts (No.1 to 16) in numerical order
as shown in the figure.
NOTE:
Use TORX socket (size E14) for bolts No.1 to 16.
A : Cylinder block side
D : Lower cylinder block side
: Engine front
PBIC5048E
a : 3.5 – 4.5 mm (0.138 – 0.177 in) dia
b: Apply to end
PBIC5017E
: 25.0 N·m (2.6 kg-m, 18 ft-lb)
: Engine front
: 35.3 N·m (3.6 kg-m, 26 ft-lb)
PBIC5016E

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CYLINDER BLOCK
Revision: 2006 November2007 350Z
e. Turn lower cylinder block bolts (No.1 to 16) 90 degrees clock-
wise (angle tightening).
CAUTION:
Use the angle wrench [SST: KV10112100 (BT8653-A)] (A) to
check tightening angle. Do not make judgment by visual
inspection.

After installing lower cylinder block bolts, make sure that crankshaft can be rotated smoothly by hand.

Check the crankshaft end play. Refer to EM-125, "CRANKSHAFT END PLAY" .
9. Install piston to connecting rod as follows:
a. Using snap ring pliers, install new snap ring to the groove of piston rear side.

Insert it fully into groove to install.
b. Install piston to connecting rod.

Using industrial use drier or similar tool, heat piston until piston pin can be pushed in by hand without
excess force [approx. 60 to 70°C (140 to 158°F)]. From the front to the rear, insert piston pin into piston
and connecting rod.

Assemble so that the front mark on the piston head and the
cylinder number on connecting rod are positioned as shown in
the figure.
c. Install new snap ring to the groove of the piston front side.

Insert it fully into groove to install.

After installing, make sure that connecting rod moves smoothly.
10. Using piston ring expander (commercial service tool), install pis-
ton rings.
CAUTION:

When installing piston rings, be careful not to damage
piston.

Be careful not to damage piston rings by expending them
excessively.
PBIC5018E
A : Piston grade number
B : Front mark
C : Pin grade number
D : Cylinder number
E : Front mark
: Engine front
PBIC5049E
PBIC0087E

CYLINDER BLOCK
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If there is stamped mark on ring, mount it with marked side
up.

Mount second ring with cut out side down.

Position each ring with the gap as shown in the figure refer-
ring to the piston front mark.

Check the piston ring side clearance. Refer to EM-126, "PISTON RING SIDE CLEARANCE" .
11. Install connecting rod bearings to connecting rod and connecting rod bearing cap.

Before 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 cutout of connecting rods and connecting rod bear-
ing caps to install.

Ensure the oil hole on connecting rod and that on the corre-
sponding bearing are aligned.
12. 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 the cylinder bore, piston and crankshaft pin journal.

Match the cylinder position with the cylinder number on connecting rod to install.

Be sure that front mark on piston head is facing front of engine.

Using piston ring compressor [SST: EM03470000 (J8037)] (A)
or suitable tool, install piston with the front mark on the piston
head facing the front of engine.
CAUTION:
Be careful not to damage the cylinder wall and crankshaft
pin, resulting from an interference of the connecting rod big
end.Stamped mark:
To p r i n g ( A ) : 1 N
Second ring (B) : 2N
PBIC5019E
PBIC0808E
PBIC2067E
PBIC5020E

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Revision: 2006 November2007 350Z
13. Install connecting rod bearing cap.

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

Be sure that front mark (H) on connecting rod bearing cap is
facing front of engine.
14. Inspect the outer diameter of connecting rod bolt. Refer to EM-133, "
LOWER CYLINDER BLOCK BOLT
OUTER DIAMETER" .
15. Tighten connecting rod bolts as follows:
a. Apply engine oil to the threads and seats of connecting rod bolts.
b. Tighten connecting rod bolts.
c. Completely loosen connecting rod bolts.
d. Tighten connecting rod bolts.
e. Then turn connecting rod bolts 90 degrees clockwise (angle
tightening).
CAUTION:
Use angle wrench [SST: KV10112100 (BT8653-A)] (A) to check tightening angle. Do not make judgment
by visual inspection.

After tightening connecting rod bolts, make sure that crankshaft rotates smoothly.

Check the connecting rod side clearance. Refer to EM-125, "CONNECTING ROD SIDE CLEARANCE" .
16. Install baffle plate.
17. Install new rear oil seal. Refer to EM-86, "
OIL SEAL" .
18. Install pilot bushing (M/T models) or pilot converter (A/T mod-
els).

With drift of the following outer diameter, press-fit as far as it
will go.
A: Sample code
B : Bearing stopper groove
C : Small-end diameter grade
D : Big end diameter grade
E : Weight grade
F : Cylinder No.
G : Management code
I : Management code
: 28.4 N·m (2.9 kg-m, 21 ft-lb)
: 0 N·m (0 kg-m, 0 ft-lb)
: 24.5 N·m (2.5 kg-m, 18 ft-lb)
Pilot bushing : Approx. 17 mm (0.67 in)
Pilot converter : Approx. 33 mm (1.30 in)
PBIC5046E
PBIC5021E
PBIC2947E

CYLINDER BLOCK
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Press-fit pilot bushing as the dimension in the figure. (M/T
models)

Press-fit pilot converter with its chamfer facing crankshaft as
shown in the figure. (A/T models)
19. Install cylinder head. Refer to EM-89, "
CYLINDER HEAD" .
20. Install rear timing chain case. Refer to EM-53, "
TIMING CHAIN" .
21. Install oil pan (upper). Refer to EM-26, "
OIL PAN AND OIL STRAINER" .
22. Install knock sensors.

Install knock sensor so that connector faces rear of engine.

After installing knock sensor, connect harness connector, and
lay it out to rear of engine.
CAUTION:

Do not tighten mounting bolts while holding connector.

If any impact by dropping is applied to knock sensor,
replace it with new one.
NOTE:

Make sure that there is no foreign material on the cylinder
block mating surface and the back surface of knock sensor.

Make sure that knock sensor does not interfere with other
parts.
23. Note the following, assemble in the reverse order of disassembly after this step.
PBIC2068E
SEM537E
A : Right bank
B : Left bank
: Engine front
PBIC5022E

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Revision: 2006 November2007 350Z
Flywheel (M/T models)

When installing flywheel to crankshaft, be sure to correctly
align crankshaft side dowel pin and flywheel side dowel pin
hole.
CAUTION:
If these are not aligned correctly, engine runs roughly
and “MIL” turns on.

There is a mating mark on the clutch cover side of flywheel.
Refer it during installation.

Holding ring gear with ring gear stopper [SST: KV11018600 (J-48641)], tighten securing bolts with
TORX socket (size: T55, commercial service tool).

Tighten the mounting bolts crosswise over several times.
Drive plate (A/T models)

When installing drive plate to crankshaft, be sure to correctly align crankshaft side dowel pin and drive
plate side dowel pin hole.
CAUTION:
If these are not aligned correctly, engine runs roughly and “MIL” turns on.

Install drive plate and reinforcement plate as shown in the fig-
ure.

Holding ring gear with ring gear stopper [SST: KV10118600
(J-48641)].

Tighten the mounting bolts crosswise over several times.
PBIC1110E
PBIC1112E
PBIC0910E

CYLINDER BLOCK
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How to Select Piston and Bearing NBS00014
DESCRIPTION
*: For the service parts, the grade for fitting cannot be selected between piston pin and connecting rod. (Only “0” grade is available.) The
information at the shipment from the plant is described as a reference.

The identification grade stamped on each part is the grade for the dimension measured in new condition.
This grade cannot apply to reused parts.

For reused or repaired parts, measure the dimension accurately. Determine the grade by comparing the
measurement with the values of each selection table.

For details of the measurement method of each part, the reuse standards and the selection method of the
selective fitting parts, refer to the text.
HOW TO SELECT PISTON
When New Cylinder Block is Used
Check the cylinder bore grade (“1”, “2” or “3”) on rear side of cylinder
block, and select piston of the same grade.
NOTE:
Piston is available with piston pin as a set for the service part. (Only
“0” grade piston pin is available.)
When Cylinder Block is Reused
1. Measure the cylinder bore inner diameter. Refer to EM-129, "Cylinder Bore Inner Diameter" .
Selection points Selection parts Selection items Selection methods
Between cylinder block to
crankshaftMain bearingMain bearing grade
(bearing thickness)Determined by match of cylin-
der block bearing housing
grade (inner diameter of hous-
ing) and crankshaft journal
grade (outer diameter of jour-
nal)
Between crankshaft to connect-
ing rodConnecting rod bearingConnecting rod bearing grade
(bearing thickness)Combining service grades for
connecting rod big end diame-
ter and crankshaft pin outer
diameter determine connecting
rod bearing selection.
Between cylinder block to pis-
tonPiston and piston pin assembly
(Piston is available together
with piston pin as assembly.)Piston grade
(piston skirt diameter)Piston grade = cylinder bore
grade (inner diameter of bore)
Between piston to connecting
rod*———
A : Bearing housing grade No. 1
B : Bearing housing grade No. 2
C : Bearing housing grade No. 3
D : Bearing housing grade No. 4
E : Cylinder bore grade No. 1
F : Cylinder bore grade No. 2
G : Cylinder bore grade No. 3
H : Cylinder bore grade No. 4
I : Cylinder bore grade No. 5
J : Cylinder bore grade No. 6
K : Identification code
: Engine front
PBIC4995E

EM-120
CYLINDER BLOCK
Revision: 2006 November2007 350Z
2. Determine the bore grade by comparing the measurement with
the values under the cylinder bore inner diameter of the “Piston
Selection Table”.
3. Select piston of the same grade.
Piston Selection Table
Unit: mm (in)
NOTE:

Piston is available together with piston pin as assembly.

Piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts, no
piston pin grades can be selected. (Only “0” grade is available.)

No second grade mark is available on piston.
HOW TO SELECT CONNECTING ROD BEARING
When New Connecting Rod and Crankshaft are Used
1. “Connecting Rod Bearing Selection Table” rows correspond to
connecting rod big end diameter grade (D) stamped on side face
of connecting rod.
2. “Connecting Rod Bearing Selection Table” columns correspond
to pin journal diameter grade (E - J) on front side of crankshafts.
A : Piston grade number
B : Front mark
C : Piston pin grade number
PBIC4994E
Grade 1 2 3
Cylinder bore inner diameter95.500 - 95.510
(3.7598 - 3.7602)95.510 - 95.520
(3.7602 - 3.7606)95.520 - 95.530
(3.7606 - 3.7610)
Piston skirt diameter95.480 - 95.490
(3.7590 - 3.7594)95.490 - 95.500
(3.7594 - 3.7598)95.500 - 95.510
(3.7598 - 3.7602)
A : Sample code
B : Bearing stopper groove
C : Small end diameter grade
D : Big end diameter grade
E : Weight grade
F : Cylinder No.
G : Management code
H : Front mark
I : Management code
A : Main journal diameter grade No. 1
B : Main journal diameter grade No. 2
C : Main journal diameter grade No. 3
D : Main journal diameter grade No. 4
E : Pin diameter grade No. 1
F : Pin diameter grade No. 2
G : Pin diameter grade No. 3
H : Pin diameter grade No. 4
I : Pin diameter grade No. 5
J : Pin diameter grade No. 6
K : Identification code
PBIC5046E
PBIC4996E