torque NISSAN 350Z 2007 Z33 Engine Mechanical User Guide

EM-74
CAMSHAFT
Revision: 2006 November2007 350Z
INSPECTION AFTER REMOVAL
Camshaft Runout
1. Put V-block on precise flat table, and support No. 2 and 4 jour-
nals of camshaft.
CAUTION:
Do not support journal No. 1 (on the side of camshaft
sprocket) because it has a different diameter from the other
three locations.
2. Set dial indicator vertically to No. 3 journal.
3. Turn camshaft to one direction with hands, and measure the
camshaft runout on a dial indicator. (Total indicator reading)
4. If it exceeds the limit, replace camshaft.
Camshaft Cam Height
1. Measure the camshaft cam height with a micrometer.
2. If wear is beyond the limit, replace camshaft.
Camshaft Journal Oil Clearance
CAMSHAFT JOURNAL DIAMETER

Measure the outer diameter of camshaft journal with a microme-
ter.
CAMSHAFT BRACKET INNER DIAMETER

Tighten camshaft bracket bolt with the specified torque. Refer to EM-77, "INSTALLATION" for the tighten-
ing procedure.

Measure the inner diameter “A” of camshaft bracket with a bore
gauge.Standard : Less than 0.02 mm (0.0008 in)
Limit : 0.05 mm (0.0020 in)
PBIC0929E
Standard cam height:
Intake : 45.865 – 46.055 mm (1.8057 – 1.8132 in)
Exhaust : 45.875 – 46.065 mm (1.8061 – 1.8136 in)
Cam wear limit
: 0.2 mm (0.008 in)
EMQ0072D
Standard:
No. 1 : 25.935 - 25.955 mm (1.0211 - 1.0218 in)
No. 2, 3, 4 : 23.445 - 23.465 mm (0.9230 - 0.9238 in)
PBIC0040E
Standard:
No. 1 : 26.000 - 26.021 mm (1.0236 - 1.0244 in)
No. 2, 3, 4 : 23.500 - 23.521 mm (0.9252 - 0.9260 in)
PBIC1645E

ENGINE ASSEMBLY
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1. Remove passenger-side kicking plate inner, dash side finisher, and instrument passenger panel lower.
Refer to EI-35, "
BODY SIDE TRIM" and IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Disconnect engine room harness connectors at unit sides TCM
(A/T models), ECM and other.
3. Disengage intermediate fixing point. Pull out engine room harnesses to engine room side, and temporarily
secure them on engine.
CAUTION:

When pulling out harnesses, take care not to damage harnesses and connectors.

After temporarily securing, cover connectors with vinyl or similar material to protect against for-
eign material adhesion.
Vehicle Underbody
1. Remove exhaust front tube. Refer to EX-3, "EXHAUST SYSTEM" .
2. Disconnect steering lower joint at power steering gear assembly side, and release steering lower shaft.
Refer to PS-10, "
STEERING COLUMN" .
3. Remove propeller shaft. Refer to PR-5, "
REAR PROPELLER SHAFT" .
CAUTION:
Do not impact or damage propeller shaft tube.
4. Disengage shift lever and remove clutch tube (M/T models). Refer to MT-18, "
TRANSMISSION ASSEM-
BLY" and CL-15, "CLUTCH PIPING" .
5. Disengage A/T control rod at control device assembly side. Then, temporarily secure it on transmission,
so that it does not sag (A/T models). Refer to AT- 2 0 4 , "
SHIFT CONTROL SYSTEM" .
6. Remove rear plate cover from oil pan (upper). Then remove bolts fixing drive plate to torque converter
(A/T models). Refer to EM-26, "
OIL PAN AND OIL STRAINER" and AT- 2 4 2 , "TRANSMISSION ASSEM-
BLY" .
7. Remove bolts fixing transmission to lower rear side of oil pan (upper). Refer to MT-18, "
TRANSMISSION
ASSEMBLY" (M/T models) or AT- 2 4 2 , "TRANSMISSION ASSEMBLY" (A/T models).
8. Remove front stabilizer. Refer to FSU-18, "
STABILIZER BAR" .
9. Separate steering outer sockets from steering knuckle. Refer to PS-17, "
POWER STEERING GEAR AND
LINKAGE" .
10. Separate transverse links from suspension member and vehicle body. Refer to FSU-13, "
TRANSVERSE
LINK" .
Removal Work
1. Use a manual lift table caddy (commercial service tool) or equiv-
alently rigid tool such as transmission jack. Securely support
bottom of suspension member and transmission.
CAUTION:
Put a piece of wood or something similar as the supporting
surface, secure a completely stable condition.
2. Remove front cross bar. Refer to FSU-5, "
FRONT SUSPENSION ASSEMBLY" .
PBIC0883E
PBIC0804E

EM-112
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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CONNECTING ROD BEND AND TORSION

Check with connecting rod aligner.

If it exceeds the limit, replace connecting rod assembly.
CONNECTING ROD BIG END DIAMETER

Install connecting rod bearing cap without installing connecting
rod bearing, and tightening connecting rod bolts to the specified
torque. Refer to E M - 111 , "
ASSEMBLY" for the tightening proce-
dure.

Measure the inner diameter of connecting rod big end with
inside micrometer.

If out of the standard, replace connecting rod assembly.
CONNECTING ROD BUSHING OIL CLEARANCE
Connecting Rod Bushing Inner Diameter
Measure the inner diameter of connecting rod bushing with inside
micrometer.Bend:
Limit: 0.15 mm (0.0059 in) per 100 mm (3.94 in) length
To r s i o n :
Limit: 0.30 mm (0.0120 in) per 100 mm (3.94 in) length
PBIC2077E
Standard : 57.000 - 57.013 mm (2.2441 - 2.2446 in)
PBIC1641E
Standard : 22.000 - 22.012 mm (0.8661 - 0.8666 in)
PBIC0120E

CYLINDER BLOCK
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Measure the distortion on the cylinder block upper face at some
different points in six directions with straightedge and feeler
gauge.

If it exceeds the limit, replace cylinder block.
MAIN BEARING HOUSING INNER DIAMETER

Install lower cylinder block (2) without installing main bearings,
and tighten lower cylinder block bolts to the specified torque.
Refer to E M - 111 , "
ASSEMBLY" for the tightening procedure.

Measure the inner diameter of main bearing housing with bore
gauge.

If out of the standard, replace cylinder block (1) and lower cylin-
der block (2) as assembly.
NOTE:
Cylinder block cannot be replaced as a single part, because it is
machined together with lower cylinder block.
PISTON TO CYLINDER BORE CLEARANCE
Cylinder Bore Inner Diameter

Using bore gauge, measure cylinder bore for wear, out-of-round
and taper at six different points on each cylinder. (“X” and “Y”
directions at “A”, “B” and “C”) (“X” is in longitudinal direction of
engine)

If the measured value exceeds the limit, or if there are scratches
and/or seizure on the cylinder inner wall, hone or re-bore the
inner wall.

Oversize piston is provided. When using oversize piston, re-
bore cylinder so that the clearance of the piston-to-cylinder bore
satisfies the standard.
CAUTION:
When using oversize piston, use over size pistons for all
cylinders with oversize piston rings.Limit : 0.1 mm (0.004 in)
SEM123C
Standard : 69.993 - 70.017 mm (2.7556 - 2.7566 in)
PBIC5125J
Standard inner diameter:
95.500 - 95.530 mm (3.7598 - 3.7610 in)
Wear limit:
0.2 mm (0.008 in)
Out-of-round (Difference between “X” and “Y”):
0.015 mm (0.0006 in)
Taper limit (Difference between “A” and “C”):
0.01 mm (0.0004 in)
Oversize (OS) : 0.2 mm (0.008 in)
PBIC0923E
SEM843E

EM-130
CYLINDER BLOCK
Revision: 2006 November2007 350Z
Piston Skirt Diameter
Measure the outer diameter of piston skirt with micrometer.
Piston to Cylinder Bore Clearance
Calculate by piston skirt diameter and cylinder bore inner diameter (direction “Y”, position “B”).
(Clearance) = (Cylinder bore inner diameter) – (Piston skirt diameter).

If calculated value exceeds the limit, replace piston and piston pin assembly. Refer to EM-119, "HOW TO
SELECT PISTON" .
Re-boring Cylinder Bore
1. Cylinder bore size is determined by adding piston to cylinder bore clearance to piston skirt diameter.
2. Install lower cylinder block, and tighten to the specified torque. Otherwise, cylinder bores may be distorted
in final assembly.
3. Cut cylinder bores.
NOTE:

When any cylinder needs boring, all other cylinders must also be bored.

Do not cut too much out of cylinder bore at a time. Cut only 0.05 mm (0.0020 in) or so in diameter at a
time.
4. Hone cylinders to obtain the specified piston to cylinder bore clearance.
5. Measure finished cylinder bore for the out-of-round and taper.
NOTE:
Measurement should be done after cylinder bore cools down.
CRANKSHAFT MAIN JOURNAL DIAMETER

Measure the outer diameter of crankshaft main journals with micrometer.

If out of the standard, measure the main bearing oil clearance. Then use undersize bearing. Refer to EM-
132, "MAIN BEARING OIL CLEARANCE" . Measure point
: Distance from the top 38.8 mm (1.528 in)
Standard
: 95.480 - 95.510 mm (3.7590 - 3.7602 in)
PBIC0125E
Standard : 0.010 - 0.030 mm (0.0004 - 0.0012 in)
Limit : 0.08 mm (0.0031 in)
Re-bored size calculation: D = A + B – C
where,
D: Bored diameter
A: Piston skirt diameter as measured
B: Piston to cylinder bore clearance (standard value)
C: Honing allowance 0.02 mm (0.0008 in)
Standard : 64.951 - 64.975 mm (2.5571 - 2.5581 in) dia.

CYLINDER BLOCK
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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-131,
"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-132, "
MAIN BEARING OIL CLEAR-
ANCE" and/or EM-131, "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.
CONNECTING ROD BEARING OIL CLEARANCE
Method by Calculation

Install connecting rod bearings to connecting rod and cap, and
tighten connecting rod bolts to the specified torque. Refer to
E M - 111 , "
ASSEMBLY" for the tightening procedure.

Measure the inner diameter of connecting rod bearing with
inside micrometer.
(Bearing oil clearance) = (Connecting rod bearing inner diameter) –
(Crankshaft pin journal diameter)Standard : 53.956 - 53.974 mm (2.1242 - 2.1250 in) dia.
PBIC0127E
Limit:
Out-of-round (Difference between “X” and “Y”)
: 0.0025 mm (0.0001 in)
Taper (Difference between “A” and “B”)
: 0.0025 mm (0.0001 in)
SBIA0535E
Standard : Less than 0.05 mm (0.0020 in)
Limit : 0.10 mm (0.004 in)
SEM346D
Standard : 0.040 - 0.053 mm (0.0016 - 0.0021 in)
(actual clearance)
Limit : 0.070 mm (0.0028 in)
PBIC1642E

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

CYLINDER BLOCK
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Remove lower cylinder block and bearings, 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”.
CRUSH HEIGHT OF MAIN BEARING

When lower cylinder block is removed after being tightened to
the specified torque with main bearings installed, the tip end of
bearing must protrude. Refer to E M - 111 , "
ASSEMBLY" for the
tightening procedure.

If the standard is not met, replace main bearings.
CRUSH HEIGHT OF CONNECTING ROD BEARING

When connecting rod bearing cap is removed after being tight-
ened to the specified torque with connecting rod bearings
installed, the tip end of bearing must protrude. Refer to E M - 111 ,
"ASSEMBLY" for the tightening procedure.

If the standard is not met, replace connecting rod bearings.
LOWER CYLINDER BLOCK BOLT OUTER DIAMETER

Measure the outer diameters (“d1 ”, “d2 ”) at two positions as
shown in the figure.

If reduction appears in “A” range, regard it as “d2 ”.

If it exceeds the limit (large difference in dimensions), replace
lower cylinder block bolt with new one.
PBIC1149E
Standard : There must be crush height.
SEM502G
Standard : There must be crush height.
PBIC1646E
Limit (“d1 ” – “d2 ”) : 0.11 mm (0.0043 in)
PBIC0911E

EM-134
CYLINDER BLOCK
Revision: 2006 November2007 350Z
CONNECTING ROD BOLT OUTER DIAMETER

Measure the outer diameter (“a”, “b” and “c”) at the position
shown in the figure.

Obtain a mean value (d) of (a) and (b).

Subtract (c) from (d).

If it exceeds the limit (large difference in dimensions), replace
the bolt with new one.
FLYWHEEL DEFLECTION (M/T MODELS)

Measure the deflection of flywheel contact surface to clutch with
dial indicator.

Measure the deflection at 210 mm (8.27 in) dia.

If the measured value is out of the standard, replace flywheel.
MOVEMENT AMOUNT OF FLYWHEEL (M/T MODELS)
CAUTION:
Do not disassemble double mass flywheel.
Movement Amount of Radial (Rotation) Direction
Check the movement amount of radial (rotation) direction as follows:
1. Install bolt to clutch cover mounting hole, and place a torque wrench on the extended line of the flywheel
center line.

Tighten bolt at a force of 9.8 N·m (1.0 kg-m, 87 in-lb) to keep it from loosening.
2. Put a mating mark on circumferences of the two flywheel
masses without applying any load (Measurement standard
points).
3. Apply a force of 9.8 N·m (1.0 kg-m, 87 in-lb) in each direction,
and mark the movement amount on the mass on the transmis-
sion side.
4. Measure dimensions of movement amounts “A” and “B” on cir-
cumference of flywheel on the transmission side.

If the measured value is out of the standard, replace flywheel.
a : Value at the end of the smaller diameter of the bolt
b : Value at the end of the smaller diameter of the bolt (opposite side “a”)
c : Value of the smallest diameter of the smaller of the bolt
Limit (“d” − “c”) : 0.09 mm (0.0035 in)
PBIC5025E
Standard : 0.45 mm (0.0177 in) or less
PBIC2168E
Standard : 24 mm (0.94 in) or less
PBIC1046E