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Showing posts with label torque specs. Show all posts
Showing posts with label torque specs. Show all posts

Sunday, October 14, 2012

Cylinder Head Torque Setting

2004 Mitsubishi Lancer Cylinder head bolt torque setting


Timing belt cylinder head torque setting

Once the cylinder head is removed out or to remove cylinder head the proper tool is required.

There is a proper order that the bolts need to be tightened,otherwise the cylinder head will be little loose or may be over-tight.


To install the cylinder head there are few several steps of tightening. 
Perform them in the following order properly,to complete the installation properly:----

  • Tighten bolts in sequence to 58 ft/lbs
  • Loosen all bolts in sequence and not randomly.
  • Tighten all bolts in sequence to 15 ft/lbs
  • Tighten all bolts in sequence an additional 90 degrees (Always keep a colorful markers ready to mark the heads of the bolt,so you can see your rotation in case you lose track)
  • Tighten all bolts in sequence a second 90 degrees

Once you follow these basics the cylinder head is now torqued properly.

If possible always use new bolts.But if old bolts are in good condition then you can re-use them.These bolts are stretch to yield bolts.These bolts loose there shape,gets bit expanded by time. If you are using new bolts, there is no issue; if you are reusing your old bolts, you need to measure them to make sure they are still in specification. From the end of the bolt to the bottom of the bolt head should be no more than 3.91 inches. If it exceeds that length, the bolt should be replaced to avoid any potential breaking/excess stretching on installation.If you still use the same bolt,which is out of its specs then the performance may show up.The cylinder head or timing belt may get damaged.

Please view to these help image/diagram for cylinder head bolt tightening sequence.
These is the correct sequence in which the bolts needs to be tightened.

torque specs

These details will help.
Thanks.

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How to Remove Cylinder Head on Toyota Previa?

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Posted by Hemant somaiya at 5:21 AM 0 comments
Labels: car head cylinder, cylinder head torque, torque specs

Thursday, December 15, 2011

2008 Honda odyssey cylinder head replacement?

Cylinder Head Replacement.

Removal & Installation

The details are as follows.
J35a6 Engine
Specific to:
Honda Odyssey 2007-2008

NOTE
The engine coolant temperature must be below 100°F (38°C) before removing the head bolts.

  1. Make sure that you have the anti-theft codes for the radio and navigation system.
  2. Relieve the fuel system pressure.
  3. Disconnect the battery ground.
  4. Remove the accessory drive belt.
  5. Drain the coolant.
  6. Remove the power steering pump and the hose bracket.
  7. Remove the alternator.
  8. Remove the timing belt.
  9. Remove the intake manifold.
  10. Remove the ignition coils.
  11. Tag and disconnect all wiring from the head.
  12. Remove the front and rear warm-up converters.
  13. Disconnect the fuel feed line.
  14. Remove the wiring harness bracket.
  15. Remove the upper and lower radiator hoses.
  16. Remove the heater and bypass hoses.
  17. Remove the EVAP canister hose joint bracket.
  18. Remove the harness brackets from the front and rear heads.
  19. Remove the fuel rail.
  20. Remove the water passage assembly.
  21. Remove the camshaft pulley.
  22. Remove the cylinder head cover.
  23. Remove the head bolts in the sequence shown 1 / 3 turn at a time. 

    Click image to see an enlarged view
    Fig. Cylinder head bolt removal sequence-J35A6 engine
  24. Remove the head.
To install:
  1. Clean all mating surfaces thoroughly.
  2. Clean and install the oil control orifices with new O-rings.
  3. Install the dowel pins and a new head gasket.
  4. Set the crankshaft pulley to TDC by aligning the TDC mark (A) with the pointer (B). See the Timing Belt Procedure.
  5. Set the camshaft pulley(s) to TDC by aligning the mark (A) with the pointer (B). See the Timing Belt Procedure.
  6. Coat the threads and flanges of head bolts with clean engine oil.
    WARNING
    There are 2 types of head bolts in service, 6-point and 12-point. Do not mix them on the same head.


    NOTE
    There are 2 different tightening methods based on which type of head bolt is used.


    WARNING
    When tightening the bolts, tighten them slowly. If any bolt makes a noise while tightening, loosen the bolt and retighten from Step 1.



    Click image to see an enlarged view
    Fig. Head bolt torque sequence-J35A6 engine
    1. Step 1: Torque all bolts in sequence to 22 ft. lbs.
    2. Step 2: Torque all bolts in sequence an additional 90°
    3. Step 3: Torque all bolts in sequence an additional 90°

      If new bolts are used, torque them in sequence an additional 90°
  7. The remainder of installation is the reverse of removal. Note the following torques:

    Water passage 8mm bolts: 16 ft. lbs. (22 Nm)
    Water passage 6mm bolts: 105 inch lbs. (12 Nm)
    Front head bracket 10mm bolt: 33 ft. lbs. (44 Nm)
    Rear head bracket 8mm bolt: 16 ft. lbs. (22 Nm)
    EVAP canister joint bracket: 105 inch lbs. (12 Nm)
    Power steering pump bolts: 16 ft. lbs. (22 Nm)
J35a7 Engine
Specific to:
Honda Odyssey 2007-2008

NOTE
The engine coolant temperature must be below 100°F (38°C) before removing the head bolts.

  1. Make sure that you have the anti-theft codes for the radio and navigation system.
  2. Relieve the fuel system pressure.
  3. Disconnect the battery ground.
  4. Remove the accessory drive belt.
  5. Drain the coolant.
  6. Remove the power steering pump and the hose bracket.
  7. Remove the alternator.
  8. Remove the timing belt.
  9. Remove the intake manifold.
  10. Remove the ignition coils.
  11. Tag and disconnect all wiring from the head.
  12. Remove the front and rear warm-up converters.
  13. Disconnect the fuel feed line.
  14. Remove the wiring harness bracket.
  15. Remove the upper and lower radiator hoses.
  16. Remove the heater and bypass hoses.
  17. Remove the EVAP canister hose joint bracket.
  18. Remove the harness brackets from the front and rear heads.
  19. Remove the fuel rail.
  20. Remove the water passage assembly.
  21. Remove the camshaft pulley.
  22. Remove the cylinder head cover.
  23. Remove the head bolts in the sequence shown 1 / 3 turn at a time. 

    Click image to see an enlarged view
    Fig. Front cylinder head bolt removal sequence-J35A7 engine


    Click image to see an enlarged view
    Fig. Rear cylinder head bolt removal sequence-J35A7 engine
  24. Remove the head.
To install:
  1. Clean all mating surfaces thoroughly.
  2. Clean and install the oil control orifices with new O-rings.
  3. Install the dowel pins and a new head gasket.
  4. Set the crankshaft pulley to TDC by aligning the TDC mark (A) with the pointer (B). See the Timing Belt Procedure.
  5. Set the camshaft pulley(s) to TDC by aligning the mark (A) with the pointer (B). See the Timing Belt Procedure.
  6. Coat the threads and flanges of head bolts with clean engine oil.
    WARNING
    When tightening the bolts, tighten them slowly. If any bolt makes a noise while tightening, loosen the bolt and retighten from Step 1.



    Click image to see an enlarged view
    Fig. Front head bolt torque sequence-J35A7 engine


    Click image to see an enlarged view
    Fig. Rear head bolt torque sequence-J35A7 engine
  7. Tighten the bolts, in sequence, in 3 steps. Perform each step twice.
    1. Step 1: 22 ft. lbs. (29 Nm)
    2. Step 2: Torque all bolts in sequence an additional 90°
    3. Step 3: Torque all bolts in sequence an additional 90°
  8. The remainder of installation is the reverse of removal. Note the following torques:

    Water passage 8mm bolts: 16 ft. lbs. (22 Nm)
    Water passage 6mm bolts: 105 inch lbs. (12 Nm)
    Front head bracket 10mm bolt: 33 ft. lbs. (44 Nm)
    Rear head bracket 8mm bolt: 16 ft. lbs. (22 Nm)
    EVAP canister joint bracket: 105 inch lbs. (12 Nm)
    Power steering pump bolts: 16 ft. lbs. (22 Nm)


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This details will help you.
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If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

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Posted by Hemant somaiya at 9:27 AM 1 comments
Labels: cylinder head gasket failure, honda cylinder head, honda odyssey, replace cylinder head, torque specs
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