How to Replace the Cylinder Head on All 1999 - 2005 Toyota Corolla / Celica / Echo / MR2 1.8L 4 Cyl Engines
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How to Replace the Cylinder Head on All 1999 - 2005 Toyota Corolla / Celica / Echo / MR2 1.8L 4 Cyl Engines

How to Replace the Cylinder Head on All 1999 - 2005 Toyota Corolla / Celica / Echo / MR2 1.8L 4 Cyl Engines.

Removal & Installation

1NZ-FE Engines

  • Before servicing the vehicle, refer to the Precautions section.
  • Drain the cooling system.
  • Remove or disconnect the following:
  1. Negative battery cable
  2. Water filler
  3. Outer front cowl top panel
  4. Alternator
  5. Air cleaner
  6. Accelerator cable
  7. Center exhaust pipe
  8. Exhaust manifold support
  9. Exhaust manifold
  10. Ignition coil
  11. Spark plugs
  12. PCV hoses
  13. Throttle body
  14. Engine wiring harness at the head
  15. Intake manifold
  16. Camshaft position sensor
  17. ECT sensor
  18. Oil control valve
  19. PCV valve
  20. Oil filer cap
  21. Cylinder head cover
  22. Fuel injectors
  23. Timing chain cover
  24. Camshaft sprockets and valve timing control assembly
  25. Camshafts
  26. Cylinder head. Remove the bolts in a circular pattern, in several stages, starting from the ends and working toward the center

To install:

  • Install or connect the following:
  1. Cylinder head, using a new gasket. Make sure to properly orient the gasket based on the instructions printing on the gasket.
  • Torque the cylinder head bolts, in sequence, in 3 steps:

     

  1. 22 ft. lbs. (29 Nm).
  2. Plus a 90 degree turn.
  3. Plus a 90 degree turn.
  • Install or connect the following:
  1. Water bypass pipe. Torque the bolt to 80 inch lbs. (9 Nm).
  2. Camshafts
  • Camshaft bearing caps in 2 stages:

     

  1. 10 ft. lbs. (13 Nm).
  2. 17 ft. lbs. (23 Nm).
  • Install or connect the following:
  1. Sprockets and valve timing controller assembly, aligning the knock pin and hole.
  2. Torque the bolts to 47 ft. lbs. (64 Nm).
  3. Check and adjust the valves
  4. Cylinder head cover
  5. Oil filler cap
  6. PCV valve
  7. ECT sensor
  8. Camshaft position sensor
  9. Timing chain cover Intake manifold
  10. Engine wiring harness
  11. Throttle body
  12. PCV hoses
  13. Spark plugs Ignition coils
  14. Exhaust manifold
  15. Exhaust manifold support.
  16. Torque the bolts to 27 ft. lbs. (37 Nm).
  17. Front exhaust pipe.
  18. Torque the nuts to 46 ft. lbs. (62 Nm).
  19. Accelerator cable
  20. Air cleaner
  21. Alternator
  22. Water filler
  23. Negative battery cable
  • Fill the cooling system to the proper level.
  • Start the vehicle, check for leaks and repair if necessary.

1zz-FE Engines

  • Before servicing the vehicle, refer to the Precautions section.
  • Drain the cooling system.
  • Remove or disconnect the following:
  1. Battery ECU box
  2. Coolant reservoir
  3. Air cleaner assembly
  4. Accelerator cable
  5. Alternator
  6. Exhaust pipe
  7. Exhaust manifold
  8. Coils
  9. Spark plugs
  10. PCV hoses
  11. Throttle body
  12. Injectors
  13. Wiring harness
  14. Intake manifold
  15. Camshaft position sensor
  16. ECT sensor
  17. PCV valve
  18. Oil filler cap
  19. Camshaft sprockets
  20. Camshafts
  21. Hoses
  22. Cylinder head bolts in sequence. To prevent damage to the cylinder head, loosen each bolt about 1 / 4 of a turn during each pass until the bolts are loose.
  23. Cylinder head

To install:

  • Clean and degrease the surface of the cylinder head and engine block.
  • Install or connect the following:
  1. New gasket on the engine block with the Lod No. stamp facing up.
  2. Cylinder head
  3. Apply a light coat of oil to cylinder head bolt threads and tighten in sequence.
  4. Replace any bolt that appears deformed.
  5. Bolts: 36 ft. lbs. (49 Nm).
  6. Tighten each bolt in sequence an additional 90 degree turn.
  7. Camshafts
  8. Sprockets
  9. Oil filler cap
  10. PCV valve
  11. ECT sensor Intake manifold
  12. Wiring harness
  13. Exhaust manifold
  14. Exhaust pipe
  15. Alternator accelerator cable
  16. Air cleaner
  17. ECM box
  18. Battery
  • Fill the cooling system to the proper level.
  • Start the vehicle, check for leaks and repair if necessary.

2zz-Ge & 2zz-FE Engines

  • Before servicing the vehicle, refer to the Precautions section.
  • Drain the cooling system.
  • Remove or disconnect the following:
  1. Battery
  2. ECU box
  3. Coolant reservoir
  4. Air cleaner assembly
  5. Accelerator cable
  6. Alternator
  7. Exhaust pipe
  8. Exhaust manifold
  9. Coils
  10. Spark plugs
  11. PCV hoses
  12. Throttle body
  13. Injectors
  14. Wiring harness
  15. Intake manifold
  16. Camshaft position sensor
  17. ECT sensor
  18. PCV valve
  19. Oil filler cap
  20. Camshaft sprockets
  21. Camshafts
  22. Hoses
  23. Cylinder head bolts in sequence. To prevent damage to the cylinder head, loosen each bolt about 1 / 4 of a turn during each pass until the bolts are loose.
  24. Cylinder head

To install:

  • Clean and degrease the surface of the cylinder head and engine block.
  • Install or connect the following:
  1. New gasket on the engine block with the Lod No. stamp facing up.
  2. Cylinder head
  3. Apply a light coat of oil to cylinder head bolt threads and tighten in sequence.
  4. Replace any bolt that appears deformed.
  5. Bolts: 26 ft. lbs. (49 Nm).
  6. Torque each bolt in sequence an additional 180 degree turn.
  7. Camshafts
  8. Sprockets
  9. Oil filler cap
  10. PCV valve
  11. ECT sensor
  12. Intake manifold
  13. Wiring harness
  14. Exhaust manifold
  15. Exhaust pipe
  16. Alternator accelerator cable
  17. Air cleaner
  18. ECM box
  19. Battery
  • Fill the cooling system to the proper level.
  • Start the vehicle, check for leaks and repair if necessary.

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Comments (1)

I'm not good at car reparing, but thanks for such a good information in this book report. I shall make sense of all these facts!

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