| 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 6° 46° 44° 8° |
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.