Question about 1994 Jeep Grand Cherokee

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What are the torque specs for replacing the exhaust manifold and intake manifold gasket?

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Check the diagram below it is all there, different bolt positions have different torque settings, do this exactly as shown or you will have problems again.


what are the torque specs - emissionwiz_15.jpg

Posted on Nov 11, 2010

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HOW TO FIX A BLOWN HEAD GASKIT?


Buy a gasket kit for the upper end. Remove the valve cover intake and exhaust manifolds. Remove the head bolts. Remove head and clean up block from old gasket material. Take the head to a machinist and make sure that it is not warped. If it is warped either replace the head with a new one or have it machined true. Install new gasket and get torque specs with new head bolts and follow torque sequence using the correct torque specs. Clean exhaust, intake and valve cover of old gaskets. install new gaskets and torque according to specifications.

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6a7ecad.jpg

Fig. Intake manifold torque sequence-3.7 & 4.7L engines


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What is the torque specs for a 1998 jeep Cherokee classic straight 6 4.0 liter? I am replacing the head gasket and need to find the lbs of torque. Thank you for any advice, pictures, etc.


Torque sequence ------------------ front | 12 8 4 1 5 9 13 | of | | engine | 11 7 3 2 6 10 14 | ------------------ Final torque must be reached in 3 equal steps Step 1: torque all bolts (except bolt 11) to 110 Ft/Lbs Step 2: torque bolt 11 to 100 Ft/Lbs Recheck final torque in sequence.

  1. Disconnect the negative battery cable.
  2. Drain the cooling system.
  3. Disconnect the hoses at the thermostat housing.
  4. Properly relieve the fuel system pressure.
  5. Remove the cylinder head cover.
  6. Loosen the rocker arms.
  7. Remove the pushrods.

The valvetrain components must be replaced in their original positions.
  1. Remove the intake and exhaust manifold from the cylinder head.
  2. Disconnect the spark plug wires and remove the spark plugs.
  3. Disconnect the temperature sending unit wire, ignition coil and bracket assembly from the engine.
  4. Remove the accessory drive belt(s).
  5. Unbolt and set aside the power steering pump and bracket. Do not disconnect the hoses.
  6. Remove the intake and exhaust manifold assembly.
  7. If equipped with A/C, perform the following:
    1. Remove the compressor and position it aside with the lines attached.
    2. Remove the compressor bracket bolts from the cylinder head.
    3. Loosen the through bolt at the bottom of the bracket.

  8. Remove the alternator.
  9. Remove the cylinder head bolts, the cylinder head and gasket from the block.

Bolt No. 14 cannot be removed until the head is moved forward. Pull the bolt out as far as it will go and suspend in place by wrapping with tape.
  1. Discard the gasket. Thoroughly clean the head-to-block mating surface.
  2. Clean and inspect the cylinder head thoroughly. Refer to the engine reconditioning portion outlined later in this section.

To install:
  1. Coat a new head gasket with suitable sealing compound and place it on the block. Most replacement gaskets will have the word TOP stamped on them.

Apply sealing compound only to the cylinder head gasket. Do not allow sealing compound to enter the cylinder bore.

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