TIBURON(GK) >2004 > G 2.7 DOHC > Engine Mechanical System > General Information>General Information  
SPECIFICATIONS
Description
Specification
Limit
General
Type
Number of cylinders
Bore
Stroke
Total displacement
Compression ratio
Firing order
Valve timing
Intake valve
Opens (BTDC)
Closes (ABDC)
Exhaust valve
Opens (BBDC)
Closes (ATDC)

V-type, DOHC
6
86.7mm (3.4133in.)
75mm (2.9528in.)
2,656cc
10 : 1
1-2-3-4-5-6



46°

44°


Camshaft
Drive mechanism
Cam height
Intake
Exhaust
Journal diameter
Bearing oil clearance
End play

Cogged type belt

43.95 ~ 44.15mm (1.7303 ~ 1.7382in.)
43.95 ~ 44.15mm (1.7303 ~ 1.7382in.)
25.964 ~ 25.980mm (1.0222 ~ 1.0228in.)
0.02 ~ 0.61mm (0.0007 ~ 0.0024in.)
0.1 ~ 0.15mm (0.0039 ~ 0.0059in.)



43.45mm (1.7106in.)
43.45mm (1.7106in.)
25.914m(1.0202in.)
0.1mm (0.0039in.)

Cylinder head
Flatness of cylinder head surface
Flatness of manifold mounting surface
Intake
Exhaust
Valve guides hole diameter
0.05 (0.002) O.S.
0.25 (0.010) O.S.
0.50 (0.020) O.S.
Intake valve seat ring hole diameter
0.3 (0.012) O.S
Exhaust valve seat ring hole diameter
0.3 (0.012) O.S.

Max. 0.03mm (0.0012in.)

Max. 0.15mm (0.0059in.)
Max. 0.15mm (0.0059in.)

11.05 ~ 11.068mm (0.435 ~ 0.436in.)
11.25 ~ 11.268mm (0.443 ~ 0.444in.)
11.50 ~ 11.518mm (0.453 ~ 0.453in.)

33.300 ~ 33.325mm (1.311 ~ 1.312in.)

28.600 ~ 28.621mm (1.126 ~ 1.127in.)

0.05mm (0.0020in.)

0.15mm (0.0059in.)
0.15mm (0.0059in.)
Valve
Overall length
Intake
Exhaust
Stem diameter
Intake
Exhaust
Face angle
Margin
Intake
Exhaust
Clearance (Stem-to-guide)
Intake
Exhaust


96.1mm (3.783in.)
97.15mm (3.825in.)

5.965 ~ 5.98mm (0.235 ~ 0.2354in.)
5.95 ~ 5.965mm (0.234 ~ 0.235in.)
45° ~ 45.5°

1.0mm (0.0394in.)
1.3mm (0.0512in.)

0.02 ~ 0.05mm (0.0008 ~ 0.0020in.)
0.035 ~ 0.065mm (0.0014 ~ 0.0026in.)
0.5mm (0.0197in.)
0.8mm (0.0315in.)

0.10mm (0.0039in.)
0.15mm (0.0059in.)
Valve spring
Free height
Load

Out of squareness

42.5mm (1.6732in.)
21kg/35mm (48.4lb/1.3780in.)

Max 1.5°

41.5mm (1.6339in.)
21.9kg/34mm
(48.4lb/1.3386in.)
Max. 3°
Piston
Diameter (Standard)
Clearance (Piston-to-cylinder)
Ring groove width
No. 1
No. 2
Oil
Piston for service

86.68 ~ 86.71mm (3.413 ~ 3.414in.)
0.01 ~ 0.03mm (0.0004 ~ 0.0012in.)

1.230 ~ 1.250mm (0.0484 ~ 0.0492in.)
1.220 ~ 1.250mm (0.0480 ~ 0.0488in.)
2.515 ~ 2.535mm (0.0990 ~ 0.0998in.)
0.25mm (0.010in.), 0.50mm (0.020in.)

Piston ring
Number of rings per piston
Compression ring
Oil ring
Compression ring type
No. 1
No. 2
Oil ring type
Ring end gap
No. 1
No. 2
Oil ring side rail
Ring side clearance
No.1
No.2
Rings for service

3
2
1

Inner bevel type
Under cut type
3-piece type

0.20 ~ 0.35mm (0.0079 ~ 0.0138in.)
0.37 ~ 0.52mm (0.0146 ~ 0.0205in.)
0.2 ~ 0.7mm (0.0079 ~ 0.0276in.)

0.04 ~ 0.08mm (0.0016 ~ 0.0031in.)
0.03 ~ 0.07mm (0.0012 ~ 0.0028in.)
0.25mm (0.010in.), 0.50mm (0.020in.)
0.8mm (0.031in.)
0.8mm (0.031in.)
1.0mm (0.039in.)

0.1mm (0.004in.)
0.1mm (0.004in.)

Connecting rod
Piston pin installation force

Side clearance (big end)
Bend

Bearing oil clearance

2,450 ~ 12,255N
(250 ~ 1,250kg, 551 ~ 2,755lb)
0.10 ~ 0.25mm (0.0039 ~ 0.0098in.)
0.05mm or less/100mm
(0.0020in. or less/3.937in.)
0.018 ~ 0.036mm (0.0007 ~ 0.0014in.)



0.4mm (0.016 in.)


0.1mm (0.004in.)
Crankshaft
Journal O.D.
Pin O.D.
Out-of-round of journal and pin
Taper of journal and pin
End play
Main bearing oil clearance

61.982 ~ 62.000 (2.4402 ~ 2.4409 in.)
47.982 ~ 48.000 (1.8891 ~ 1.8898in.)
Max. 0.003mm (0.00012in.)
Max. 0.005mm (0.00020in.)
0.070 ~ 0.250mm (0.0028 ~ 0.0098in.)
0.004 ~ 0.022mm (0.0002 ~ 0.0009in.)
0.4mm (0.016in.)
0.1mm (0.004in.)
Cylinder block
Cylinder bore
Flatness of gasket surface
Out-of-round of cylinder bore

86.7mm (3.4134in.)
Max. 0.03mm (0.0012in.)
Max. 0.02mm (0.0008in.)


0.05mm (0.002in.)

Oil pump
Side clearance
Body clearance
Side clearance


0.100 ~ 0.181mm (0.0039 ~ 0.0071 in.)
0.040 ~ 0.095mm (0.0016 ~ 0.0037in.)

Relief spring
Free length
Load

43.8,, (1.724in.)
4.6kg/39.3mm (10lb/1.547in.)

Oil filter
Type
Engine oil pressure


Cooling method

Cooling system quantity

Cartridge, full flow
50kPa (7.3psi) or more
[Conditions : Oil temperature is 75 to 90°C (167 to 194°C)]
Engine coolant cooling, forced circulation with electric fan
7.0lit (7.4U.S.qts., 6.1lmp.qts.) [For V6]

Theromstat
Type
Normal opening temperatrure
Opening temperature range
Wide open temperature

wax pellet type with jiggle valve
82 ± 2.0°C (179.6 ± 35.6°F)
80 ~ 84°C (176 ~ 183.2°F)
95°C (203°F)

Radiator cap
Main valve opening pressure

Main valve closing pressure
Vacuum valve opening pressure

107.9 ± 14.7kPa (1.1 ± 0.15kg/cm², 15.65 ± 2.13psi)
83.4kPa (0.85kg/cm², 12.1psi)
-6.86kPa (-0.07kg/cm², -1.00psi)

Air cleaner
Type
Element

Dry
Paper type

Exhaust pipe
Muffler
Suspension system

Expansion reaonance type
Rubber hangers


SERVICE STANDARD
Standard value
Coolant concentration
Tropical areas
40%
Other areas
50%

COOLANT
Engine coolant
Ethylence glycol base for aluminum radiator

SEALANT
Engine coolant temperature sensor
LOCTITE 262 or equivalent, Three bond No. 1324 or equivalent.
Oil pressure switch
3M ATD No. 8660 or Three bond No. 1141E
PCV valve
LOCTITE 242 or equivalent

TIGHTENING TORQUE
Item
Nm
kg.cm
lb.ft
Camshaft sprocket bolt
90 ~ 110
900 ~ 1,100
65 ~ 80
Cylinder head cover bolt
8 ~ 10
80 ~ 100
5.8 ~ 7.2
Main bearing cap bolt
M10
M8

27~33 + (90°~94°)
13~19 + (90°~94°)

270~330 + (90°~94°)
130~190 + (90°~94°)

19.5 ~24 + (90° ~ 94°
10~14 + (90°~94°)
Connecting rod bolt
16~20 + (90°~94°)
160~200 + (90°~94°)
12~15 + (90°~94°)
Cylinder head bolt (Cold engine)
25 + (58°~92°) + (43°~47°)
250 + (58°~92°) + (43°~47°)
18 + (58°~92°) + (43°~47°)
Oil pan drain plug
35 ~ 45
350 ~ 450
25 ~ 33
Lower oil pan bolt
10 ~ 12
100 ~ 120
7 ~ 9
Upper oil pan bolt
[10×38mm (0.937×1.4961in.)]
[8×22mm (0.3150×0.8661in.)]
[161.5mm(6.3582in.)]
[152.5mm (6.0039in.)]

30 ~ 42
19 ~ 28
5 ~ 7
5 ~ 7

300 ~ 420
190 ~ 280
50 ~ 70
50 ~ 70

22 ~ 30
14 ~ 20
4 ~ 5
4 ~ 5
Oil screen bolt
15 ~ 22
150 ~ 220
11 ~ 16
Oil pump case bolt
12 ~ 15
120 ~ 150
9 ~ 11
Oil relief valve plug
40 ~ 50
400 ~ 500
29 ~ 36
Oil pressure switch
15 ~ 22
150 ~ 220
11 ~ 16
Oil pump cover screw
8 ~ 12
80 ~ 120
6 ~ 9
Oil filter
12 ~ 16
12 ~ 160
9 ~ 12
Fly wheel bolt
73 ~ 77
730 ~ 770
53 ~ 56
Drive plate and adaptor plate bolt
73 ~ 77
730 ~ 770
53 ~ 56
Air cleaner body installation bolt
8 ~ 12
80 ~ 120
6 ~ 9
Surge tank stay
15 ~ 20
150 ~ 200
11 ~ 14
Air intake surge tank to intake manifold (bolt)
15 ~ 20
150 ~ 200
11 ~ 14
Air intake surge tank to intake manifold (nut)
15 ~ 20
150 ~ 210
11 ~ 14
Intake manifold to cylinder head
19 ~ 21
190 ~ 150
14 ~ 15
Heat protector to exhaust manifold
12 ~ 15
120 ~ 350
9 ~ 11
Exhaust manifold to cylinder head (Self-locking nut)
30 ~ 35
300 ~ 150
22 ~ 26
Oil level gauge guide to engine
12 ~ 15
120 ~ 200
9 ~ 11
Water outlet fitting bolt
17 ~ 20
170 ~ 260
12 ~ 14
Power steering oil pump bracket to cylinder head
17 ~ 26
170 ~ 260
12 ~ 19
Power steering oil pump bracket
17 ~ 26
170 ~ 260
12 ~ 19
Crank position sensor wheel screw
5 ~ 6
50 ~ 60
3.6 ~ 4.3
Engine mounting insulator bolt
40 ~ 55
400 ~ 550
29 ~ 40
Engine mounting bracket nut
60 ~ 80
600 ~ 800
43 ~ 58
Engine mounting bracket bolt
60 ~ 80
600 ~ 800
43 ~ 58
Engine support bracket stud
30 ~ 40
300 ~ 400
22 ~ 59
Front roll stopper bracket to sub cross member bolt
40 ~ 55
400 ~ 550
29 ~ 40
Front roll stopper insulator bolt and nut
50 ~ 65
500 ~ 650
36 ~ 47
Rear roll stopper bracket to cross member bolt
40 ~ 55
400 ~ 550
29 ~ 40
Rear roll stopper insulator bolt and nut
50 ~ 65
500 ~ 650
36 ~ 47
Transaxle mounting bracket bolt
40 ~ 55
400 ~ 550
29 ~ 40
Transaxle mounting insulator bolt
90 ~ 110
900 ~ 1,100
65 ~ 80
Fuel hose clamp to rear cylinder head assembly
12 ~ 15
120 ~ 150
9 ~ 11
Transaxle mounting plate
10 ~ 12
100 ~ 120
7 ~ 9
Rear plate
10 ~ 12
100 ~ 120
7 ~ 9
Oil seal case
10 ~ 12
100 ~ 120
7 ~ 9
Crankshaft pulley bolt
180 ~ 190
1,800 ~ 1,900
130 ~138
Timing belt cover bolt
10 ~ 12
100 ~ 120
7 ~ 9
Engine hanger bracket to engine
20 ~ 27
200 ~ 270
14 ~ 20
Alternator mounting bracket to engine
20 ~ 30
200 ~ 300
14 ~ 22
Alternator mounting nut (Engine front case side)
20 ~ 30
200 ~ 300
14 ~ 22
Alternator mounting bolt (Alternator mounting bracket side)
20 ~ 30
200 ~ 300
14 ~ 22
Starter to transmission (Nut)
20 ~ 30
200 ~ 300
14 ~ 22
Starter to transmission (Bolt)
27 ~ 34
270 ~ 340
20 ~ 25
Driver belt pulley bolt
35 ~ 55
350 ~ 550
25 ~ 40
Driver belt tensioner bolt
20 ~ 27
200 ~ 270
14 ~ 20
Engine coolant pump to cylinder block bolt (Head mark "7" mark)
15 ~ 22
150 ~ 220
11 ~ 16
Engine coolant temperature sensor
20 ~ 40
200 ~ 400
14 ~ 29
Engine coolant inlet fitting attaching bolt
17 ~ 20
170 ~ 200
12 ~ 14
Throttle body to surge tank bolt
15 ~ 20
150 ~ 200
11 ~ 14
Oxygen sensor to exhaust manifold
40 ~ 50
400 ~ 500
29 ~ 36
Front exhaust pipe to exhaust manifold nut
30 ~ 40
300 ~ 400
22 ~ 29
Front exhaust pipe to catalytic converter bolt
40 ~ 60
400 ~ 600
29 ~ 43
Catalytic converter to center exhaust pipe nut
30 ~ 40
300 ~ 400
22 ~ 29
Center exhaust pipe to main muffler nut
30 ~ 40
300 ~ 400
22 ~ 29
Main muffler hanger support bracket bolt
10 ~ 15
100 ~ 150
7 ~ 11
Delivery pipe installation boly
10 ~ 15
100 ~ 150
7 ~ 11
Timing belt tensioner pulley bolt
43 ~ 55
430 ~ 550
31 ~ 40
Timing belt idler pulley bolt
50 ~ 60
500 ~ 600
36 ~ 43
Timing belt tensioner arm fixed bolt
35 ~ 55
350 ~ 550
25 ~ 40
Auto tensioner fixed bolt
20 ~ 27
200 ~ 270
14 ~ 20
Accelerator cable bracket
4 ~ 6
40 ~ 60
3 ~ 4
Spark plug
20 ~ 30
200 ~ 300
14 ~ 22

CHECKING ENGINE OIL
1.
Position a vehicle on a level surface.
2.
Turn off the engine.
In the case of a vehicle that has not been used for a prolonged period, run the engine for several minutes.
Turn off the engine and wait for 5 minutes at least, then check the oil level.
3.
Check that the engine oil level is within the level range indicated on the oil dipstick. If the oil level is found to have fallen to the lowerlimit (the "L" mark), refill to the "F" mark.
When refilling, use the proper grade of engine oil.
4.
Check that the oil is not dirty or mixed with coolant or gasoline, and that it has the proper viscosity.

SELECTION OF ENGINE OIL
Recommended API classification: SH OR ABOVE
Recommended SAE viscosity grades :

1.
Satisfy the requirements of the API classification.
2.
Have the proper SAE grade number for expected ambient temperature range.
CHANGE ENGINE OIL
1.
Run the engine until it reaches normal operating temperature.
2.
Turn off the engine.
3.
Remove the oil filler cap and oil filter and then drain plug.
Drain the engine oil.
4.
Tighten the drain plug to the specified torque.

Tightening torque
Oil pan drain plug :
35 ~ 45Nm (350 ~ 450kg.cm, 25 ~ 33lb.ft)

Whenever tightening the oil drain plug, use a new drain plug gasket.
5.
Fill the new engine oil through the oil filler cap.

Drain and Refill
Oil quantity : 4.5lit (4.74U.S.qts., 3.95lmp.qts.)

Do not over fill. This will cause oil aeration and loss of oil pressure.
6.
Install the oil filler cap.
7.
Start and run the engine.
8.
Turn off the engine and then check the oil level. Add oil if necessary.

REPLACEMENT OIL FILTER
High quality of replacement filters should be used to assure the most efficient service. Make sure that the rubber gasket from the old oil filter is completely removed from the contact surface on the engine block beforeinstalling a new filter.

Procedure for Replacing Oil Filter
1.
Use a filter wrench to remove the oil filter.
2.
Before installing a new oil filter on the engine, apply clean engine oil to the surface of the rubber gasket.
3.
Tighten the oil filter of the specified torque.

Tightening torque
Oil filter : 12 ~ 16Nm (120 ~ 160kg.cm, 9 ~ 12lb.ft)

4.
Start and run the engine and check engine oil leaks.
5.
After stopping the engine, check the oil level and add oil as necessary.

CHECKING COOLANT LEAK CHECK
1.
Loosen the radiator cap.
2.
Confirm that the coolant level is up to the filler neck.
3.
Install a radiator cap tester to the radiator filler neck and apply 150 KPa (21psi, 1.53 kg/cm²) pressure. Hold for two minutes, then checkfor leakage from the radiator, hoses or connections.
1.
Radiator coolant may be extremely hot. Do not open the system while hot, or scalding engine coolant could gush out, causing personal injury. Allowthe vehicle to cool before servicing this system.
2.
When the tester is removed, be careful not to spill any coolant from it.
3.
Be sure to clean away completely any coolant from the area.
4.
Be careful, when installing and removing the tester and when testing, not to deform the filler neck of the radiator.
4.
If there is leakage, repair or replace with the apropriate part.

RADIATOR CAP PRESSURE TEST
1.
Use an adapter to attach the cap to the tester.
2.
Increase the pressure until the indicator of the gauge stops moving.

Main valve opening pressure :
107.9 ± 14.7kPa (1.1 ± 0.15kg/cm² , 15.64 ± 2.13psi)
Main valve closing pressure :
83.4 kPa (0.85 kg/cm², 12.1 psi

3.
Check that the pressure level is maintained at or above the limit.
4.
Replace the radiator cap if the reading does not remain at or above the limit.
Be sure that the cap is clean before testing, since rust or other foreign material on the cap seal will cause an incorrect reading.

SPECIFIC GRAVITY TEST
1.
Measure the specific gravity of the coolant with a hydrometer.
2.
Measure the coolant temperature and calculate the concentration from the relation between the specific gravity and temperature. Use the followingtable for reference.

RELATION BETWEEN COOLANT CONCENTRATION AND SPECIFIC GRAVITY
Coolant temperature °C (°F) and specific gravity
Freezing
temperature
°C(°F)
Safe
operating
temperature
°C(°F)
Coolant
concentration
(Specific volume)
10 (50)
20 (68)
30 (86)
40 (104)
50 (122)
1.054
1.050
1.046
1.042
1.036
-16 (3.2)
-11 (12.2)
30%
1.063
1.058
1.054
1.049
1.044
-20 (-4)
-15 (5)
35%
1.071
1.067
1.062
1.057
1.052
-25 (-13)
-20 (-4)
40%
1.079
1.074
1.069
1.064
1.058
-30 (-22)
-25 (-13)
45%
1.087
1.082
1.076
1.070
1.064
-36 (-32.8)
-31 (-23.8)
50%
1.095
1.090
1.084
1.077
1.070
-42 (-44)
-37 (-35)
55%
1.103
1.098
1.092
1.084
1.076
-50 (-58)
-45 (-49)
60%

The safe operating temperature is -15°C (5°F) when the measured specific gravity is 1.058 at coolant temperature of 20°C (68°F).
If the concentration of the coolant is below 30%, its anti-corrosion property will be adversely affected.
If the concentration is above 60%, the engine cooling property will decrease, affecting the engine adversely. For these reasons, be sure to maintainthe concentration level within the specified range.
Do not mix types of anti - freeze.
RECOMMENDED COOLANT
Antifreeze
Mixture ratio of antifreeze in coolant
ETHYLENE GLYCOL BASE FOR ALUMINUM
50% [Except tropical areas]
40% [Tropical areas]

CHECKING COMPRESSION PRESSURE
1.
Before checking the engine compression, check the engine oil level. Also check that the starter motor and battery are all in normal operatingcondition.
2.
Start the engine and wait until the engine coolant temperature reaches 80 ~ 95°C (176 ~ 205°F).
3.
Stop the engine and disconnect the spark plug cables.
4.
Remove the spark plugs.
5.
Crank the engine to remove any foreign material in the cylinders.
6.
Insert the compression gauge into the spark plug hole.
7.
Depress the accelerator pedal to open the throttle fully.
8.
Crank the engine and read the gauge.

Standard value : 1,200kpa (12.2 kg/cm² , 170psi)
Limit : 1,050kpa (10.7kg/cm² , 149psi)

9.
Repeat steps 6 to 8 for all cylinders, making sure that the pressure difference for each of the cylinders is within the specified limit.

Limit
Max. 100kpa (1.0 kg/cm², 14psi) between cylinders

10.
If a cylinder's compression or pressure differential is outside the specification, add a small amount of oil through the spark plug hole, andrepeat steps 6 to 9.
(1)
If the addition of oil causes the compression to rise, it is possible that the piston ring is worn.
(2)
If the compression remains the same, valve seizure, poor valve seating or a compression leak in the cylinder head gasket are all possible causes.

Tightening torque
Spark plug : 20 ~ 30Nm (200 ~ 300kg.cm, 14 ~ 22 lb.ft)

TIGHTENING CYLINDER HEAD BOLTS
1.
First loosen slightly and then tighten to the specified torque.

Tightening torque
Cylinder head bolts cold [Engine temperature approximately 20°C (68°F)] :
25Nm (250kg.cm, 18lb.ft) + (58° ~ 62°) + (43° ~ 47°)

2.
Use the torque - angle method to torque the head bolts.
3.
Be sure to follow the specific torque sequence as shown in the illustration.
Run the engine to normal operating temperature and let it cool, then re-torque the bolts to specifications.

ADJUSTING VALVE CLEARANCE
As the intake and exhaust valves are equipped with hydraulic lash adjusters, there is no need to adjust the valve clearance. The proper function of the hydraulic lash mechanism may be determined by checking for tappet noise. When there is a tappet noise or any unusual noise, check the hydraulic lash adjusterby removing and bleeding or replacing it.
ADJUSTING DRIVE BELT AND TENSIONER
1.
Hang the belt on the pulley of the tensioner and install the tensioner.
(If the tensioner is already installed, loosen its mounting bolts to allow belt installation.)

Tightening torque
Tensioner assembly bolt :
20 ~ 27 Nm (200 ~ 270 kg.cm, 14 ~ 20 lb.ft)

2.
Install the belt in the fllowing order.
[Alternator → Power steering → Crankshaft pulley → Air conditioner pulley.]

3.
Rotate the tensioner arm clockwise (about 14°) with a spaner (16 mm ) and fit the belt to the idler pulley.

4.
When installing the belt on the pulley, make sure it is centered on the pulley.

5.
The tensioner mark should be between the "MIN" and "MAX" position. If not, replace the belt.