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Before servicing the vehicle, refer to the Precautions Section.
Drain the cooling system.
Properly relieve the fuel system pressure.
Remove or disconnect the following:
Negative battery cableExhaust manifoldAlternatorWater crossoverIntake manifoldValve coverTiming coverSecondary camshaft drive chainPower steering return hose retaining bolt from the cylinder head3 M6 external drive bolts from the front portion of the cylinder head10 M11 internal drive cylinder head boltsCylinder head and gasket.
Clean the head mating surfaces.
To install:
Fig. Left cylinder head bolt torque sequence-4.6L engine
Install the cylinder head with a new gasket. Lubricate the bolts with engine oil prior to installation.
Torque the M11 bolts in sequence as follows:
Step 1: 30 ft. lbs. (40 Nm), plus an additional 70 degrees
Step 2: Turn an additional 60 degrees
Step 3: Turn an additional 60 degrees (total 190 degrees)
Torque the M6 bolts to 106 inch lbs. (12 Nm)
Install or connect the following:
Power steering return hose retaining bolt to the cylinder head and tighten to 37 ft. lbs. (50 Nm)Secondary camshaft drive chainTiming coverValve coverIntake manifoldWater crossoverExhaust manifoldNegative battery cable
Change the oil and filter.
Fill the cooling system.
Right Side
Before servicing the vehicle, refer to the Precautions Section.
Drain the cooling system.
Properly relieve the fuel system pressure.
Remove or disconnect the following:
Negative battery cableExhaust manifoldWater crossoverIntake manifoldValve coverTiming coverSecondary camshaft drive chainElectrical connector from the Engine Coolant Temperature (ECT) sensorNut attaching the coil cassette ground wire to the cylinder headBolt attaching the exhaust crossover pipe to the cylinder headBolt attaching the right transaxle mount bracket to the cylinder headBolt attaching the rear transaxle brace to the transaxleNuts attaching the rear transaxle brace to the cylinder headRear transaxle brace3 M6 external drive bolts from the front portion of the cylinder head10 M11 internal drive cylinder head boltsCylinder head and gasket
Clean the head mating surfaces.
To install:
Fig. Right cylinder head bolt torque sequence- 4.6L engine
Install the cylinder head with a new gasket. Lubricate the bolts with engine oil prior to installation.
Torque the M11 bolts in sequence as follows:
Step 1: 30 ft. lbs. (40 Nm), plus an additional 70 degrees.
Step 2: Turn an additional 60 degrees.
Step 3: Turn an additional 60 degrees (total 190 degrees).
Torque the M6 bolts to 106 inch lbs. (12 Nm).
Install or connect the following:
Rear transaxle brace over the studs located at the rear of the right cylinder headNuts attaching the rear transaxle brace to the cylinder head, looselyBolts attaching the rear transaxle braces to the transaxle and tighten to 37 ft. lbs. (50 Nm)Nuts attaching the rear transaxle brace to the cylinder head and tighten 37 ft. lbs. (50 Nm)Electrical connector to the ECT sensorBolt attaching the exhaust crossover pipe to the cylinder head and tighten to 18 ft. lbs. (25 Nm)Nut attaching the coil cassette ground wire to the cylinder head and tighten to 13 ft. lbs. (17 Nm)Secondary camshaft drive chainTiming coverValve coverIntake manifoldWater crossoverExhaust manifoldNegative battery cable
1. Drain the coolant and disconnect the upper radiator hose. 2. Remove the breather hose (between the air cleaner and the head cover). 3. Remove the air-intake hose. 4. Remove the vacuum hose, fuel hose and coolant hose. 5. Remove the cables from the spark plugs. The cables should be removed by holding the boot portion. 6. Remove the ignition coil. 7. Remove the power steering oil pump and bracket. 8. Remove the intake manifold. 9. Remove the heat protector and exhaust manifold assembly. 10. Remove the coolant pump pulley and the crankshaft pulley. 11. Remove the timing belt cover. 12. Remove the timing belt tensioner pulley. 13. Remove the timing belt. 14. Remove the head cover.
15. Remove the cylinder head assembly. The cylinder head bolts should be removed by using Special Tool, Cylinder Head Bolt Wrench (09221-32001) or equivalent, in the sequence as shown in the illustration in two or three steps. 16. Remove the gasket pieces from the cylinder block top surface and cylinder head bottom surface. NOTE: Make sure that the gasket pieces do not fall in the engine.
INSTALLATION
1. Clean all gasket surfaces of the cylinder block and the cylinder head. 2. Install a new cylinder head gasket onto the cylinder head assembly. Apply sealant to the gasket and do not reuse the old cylinder head gasket.
3. Install the cylinder head bolts. Starting at top center, tighten all cylinder head bolts in sequence as shown in illustration, using the Cylinder Head Bolt Wrench (09221 - 32001) or equivalent. Repeat the procedure, re-tightening all cylinder head bolt to the specified torque. (torque spec is Cold Engine 105-115 Nm (76-83 ft lb) ) 4. Install the timing belt tensioner pulley. 5. Install the timing belt on the camshaft sprocket, making sure that the tension side is tightened by turning the camshaft sprocket in reverse, all timing marks are in alignment. 6. Adjust the timing according to "Timing Belt" 7. Install the rocker cover and tighten the bolts to the specified torque. Tightening torque: Rocker cover belt:
2.5-3.5 Nm (25-35 kg.cm, 2-3 ft. lbs.)
8. Install the timing belt cover. 9. Install the new intake manifold gasket and the intake manifold. Tighten the nuts and bolts to the specified torque. 10. Install the new exhaust manifold gasket and the exhaust manifold. Tighten the exhaust manifold attaching nuts to the specified torque. 11. Install the surge tank and tighten the nuts bolts to the specified torque. 12. Install the power steering oil pump and bracket. 13. Install the ignition coil. 14. Install the air intake hose. 15. Connect the vacuum hose, fuel hose and water hose. 16. Install breather hose.
If you change the head bolts that's the safest bet for trouble free operation. But, I've changed head bolts on Hondas for years and they never stretched. I know this is for a Kia. My best guess is that it's not necessary since the Chilton based manuals don't say to do this.
If the head is torqued down to specifications and it leaks, then I would say, otherwise. Even torque is more important than bolt stretch, especially if the bolts don't stretch so much that the head gasket can't be tight against the head and block.
Install the cylinder head bolts. Starting at top center, tighten all
cylinder head bolts in sequence as shown in illustration, using the
Cylinder Head Bolt Wrench (09221 - 32001) or equivalent. Repeat the
procedure, re-tightening all cylinder head bolt to the specified torque.
(torque spec is Cold Engine 105-115 Nm (76-83 ft lb) )
. Install the timing belt tensioner pulley.
. Install the timing belt on the camshaft sprocket, making sure that
the tension side is tightened by turning the camshaft sprocket in
reverse, all timing marks are in alignment.
. Adjust the timing according to "Timing Belt"
. Install the rocker cover and tighten the bolts to the specified torque. Tightening torque: Rocker cover belt:
2.5-3.5 Nm (25-35 kg.cm, 2-3 ft. lbs.)
. Install the timing belt cover.
Install the new intake manifold gasket and the intake manifold. Tighten the nuts and bolts to the specified torque.
Install the new exhaust manifold gasket and the exhaust manifold.
Tighten the exhaust manifold attaching nuts to the specified torque.
. Install the surge tank and tighten the nuts bolts to the specified torque.
. Install the power steering oil pump and bracket.
. Install the ignition coil.
. Install the air intake hose.
Connect the vacuum hose, fuel hose and water hose.
. Install breather hose.
Disconnect the Oxygen (O2) sensor electrical connector.
Remove the (O2) sensor.
Raise and safely support the vehicle.
Exhaust brace 2.4L
Remove the exhaust manifold brace-to-manifold bolt and the oil pan nuts, if necessary.
Exhaust heat shield 2.4L
Remove the upper heat shield.
NOTE: Do NOT bend the exhaust flex decoupler more than necessary to remove it. Excessive movement will damage the flex decoupler
Exhaust flex decoupler
Remove the manifold-to-exhaust flex decoupler fasteners.
Remove the exhaust pipe.
Carefully lower the vehicle.
Remove the exhaust manifold-to-cylinder head mounting nuts/bolts. Remove the exhaust manifold.
Discard the gaskets and/or seals. Clean the mating surfaces.
To Install:
Exhaust manifold 2.4L
Install new exhaust manifold gaskets. Position the exhaust manifold on the cylinder head. Tighten the mounting bolts in sequence to 110 in lbs (12.5 Nm).
Raise and safely support the vehicle.
Install the exhaust manifold heat shield. Tighten the mounting bolts to 10 ft. lbs (14 Nm).
Install the exhaust manifold brace-to-manifold bolt and the oil pan nuts. Tighten the mounting bolts to 41 ft lbs (56 Nm) and the nuts to 18 ft lbs (24 Nm).
Position the exhaust pipe to the manifold. Install the manifold-to-flex decoupler mounting bolts. Tighten to 26 ft lbs (35 Nm).
Lower the vehicle.
Coat the threads with a suitable anti-seize compound and install the O2 sensor.
Connect the O2 sensor electrical connector.
Connect the battery ground cable and check for leaks.
On the 80 inch evolution engine, the heads torque in three steps and in a certain pattern. There are four studs with special "nuts" on them and the torque in a circular pattern in a certain numerical order.
They also torque in three steps. The first step is torqed to 84-108 inch pounds. The second step brings the torque up to 12-14 foot pounds. Then you mark each "nut" and tighten them 1/4 turn more.
Removal Procedure
1. Disconnect the negative battery cable.
2. Drain the engine oil from the engine crankcase.
3. Remove the exhaust flex pipe retaining nuts from
the exhaust manifold.
4. Remove the exhaust flex pipe retaining nuts from
the catalytic converter or the connecting pipe.
5. Remove the exhaust flex pipe.
6. Remove the oil pan flange–to–transaxle retaining
bolts.
7. Remove the oil pan retaining bolts.
8. Remove the oil pan from the engine block.
Cleaning Procedure
1. Clean the oil pan sealing surface.
2. Clean the engine block sealing surface.
3. Clean the oil pan retaining bolts.
4. Clean the oil pan attaching bolt holes in the engine
block.
5. Clean the oil pan scraper.
Installation Procedure
1. Coat the new oil pan gasket with sealant.
Important : Install the oil pan within 5 minutes after applying
the liquid gasket to the oil pan.
2. Install the oil pan to the engine block.
3. Install the oil pan retaining bolts.
Tighten
Tighten the oil pan retaining bolts to 10 NSm (89 lb–in).
4. Install the oil pan flange–to–transaxle retaining
bolts.
Tighten
Tighten the oil pan flange–to–transaxle bolts to 40
NSm (30 lb–ft).
5. Install the exhaust flex pipe.
6. Install the exhaust flex pipe retaining nuts to the
exhaust manifold.
Tighten
Tighten the exhaust flex pipe–to–exhaust manifold
retaining nuts to 35 NSm (26 lb–ft).
7. Install the exhaust flex pipe retaining nuts to the
catalytic converter or the connecting pipe.
Tighten
Tighten the exhaust flex pipe–to–catalytic converter
or connecting pipe retaining nuts to 35 NSm (26 lb–ft).
8. Connect the negative battery cable.
9. Install the oil pan drain plug.
Tighten
Tighten the oil pan drain plug to 35 NSm (26 lb–ft).
10. Refill the engine crankcase with engine oil.
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