Toyota Cressida/Corona/Crown/MarkII 1970-1982 Repair Guide

Exhaust Manifold

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REMOVAL & INSTALLATION




WARNING
Do not perform this operation on a warm or hot engine.

20R and 22R Engines


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Fig. Fig. 1 View of the exhaust manifold-20R and 22R engine



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Fig. Fig. 2 To remove the exhaust manifold, first disengage the heat shield retaining nuts-20R engine shown



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Fig. Fig. 3 1. Outer heat shield



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Fig. Fig. 4 Loosen and remove the exhaust manifold mounting bolts



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Fig. Fig. 5 Remove the air injection tube mounting bolts ...



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Fig. Fig. 6 ... and separate the injection tube from the manifold



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Fig. Fig. 7 Lift the exhaust manifold from the engine



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Fig. Fig. 8 During installation, remove the old heat shield gasket and replace it with a new one

  1. Remove the three exhaust pipe flange bolts and disconnect the exhaust pipe from the manifold. It may be necessary to remove the outer heat shield first on some models.
  2.  
  3. Mark and disconnect the spark plug leads.
  4.  
  5. Remove the air cleaner tube from the heat stove.
  6.  
  7. Use a 14mm wrench to remove the manifold securing nuts.
  8.  
  9. Remove the manifold, complete with air injection tubes and the inner portion of the heat stove.
  10.  
  11. Separate the inner portion of the heat stove from the manifold.
  12.  
  13. Installation is the reverse of removal. Tighten the retaining nuts to 29-36 ft. lb., working from the inside out, and in several stages. Tighten the exhaust pipe flange nuts to 25-32 ft. lb.
  14.  

M Series
  1. Raise the front and the rear of the car and support it with jackstands.
  2.  


CAUTION
Be sure that the car is securely supported.

  1. Remove the right-hand gravel shield from beneath the engine.
  2.  
  3. Remove the downpipe support bracket.
  4.  
  5. Unfasten the bolts from the flange and detach the downpipe from the manifold. It may be necessary to remove the outer heat shield first.
  6.  
  7. Remove the automatic choke and air cleaner stove hoses from the exhaust manifold.
  8.  
  9. Remove or move aside, any of the air injection system components which may be in the way when removing the manifold. Unfasten the EGR valve and pipes.
  10.  
  11. In order to remove the manifold, unfasten the manifold retaining bolts.
  12.  


WARNING
Remove and tighten the bolts in two or three stages and, starting from the inside, working out.

  1. Installation is performed in the reverse order of removal. Always use a new gasket. Tighten the retaining bolts to the specifications given in two or three stages.
  2.  

 
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