Toyota Pick-ups/Land Cruiser/4Runner 1970-1988

Exhaust Manifold

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REMOVAL & INSTALLATION



See Figures 1, 2, 3, 4, 5, 6, 7, 8 and 9

20R, 22R, 22R-E, 22R-TE and 3VZ-E Engines
  1. Remove the three exhaust pipe flange bolts (turbocharger flange bolts on the 22R-TE) and disconnect the exhaust pipe from the manifold.
  2.  
  3. Tag and disconnect the spark plug leads.
  4.  
  5. Position the spark plug wires out of the way. It may be best to tie them so they don't flop back in your way.
  6.  
  7. Remove the air cleaner tube from the heat stove on carbureted engines, and remove the outer part of the heat stove.
  8.  
  9. Use a 14mm wrench to remove the manifold securing nuts.
  10.  
  11. Remove the manifold(s), complete with air injection tubes and the inner portion of the heat stove.
  12.  

To install:
  1. Separate the inner portion of the heat stove from the manifold.
  2.  
  3. When installing the manifold(s), tighten the retaining nuts to 29-36 ft. lbs., working from the inside out, and in several stages. Install the distributor and set the timing as previously outlined. Tighten the exhaust pipe flange nuts to 25-32 ft. lbs.
  4.  



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Fig. Fig. 1: Exhaust manifold-20R and 22R engines



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Fig. Fig. 2: Right side exhaust manifold-3Z-E engine



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Fig. Fig. 3: Left side exhaust manifold-3Z-E engine



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Fig. Fig. 4: Removing the exhaust manifold heat shield



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Fig. Fig. 5: Removing the exhaust manifold emission connections



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Fig. Fig. 6: Removing the emission air pipes (inner mounting bolts)



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Fig. Fig. 7: Removing the emission air pipes (outer mounting bolts)



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Fig. Fig. 8: Removing the emission air pipe assembly



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Fig. Fig. 9: Removing the exhaust manifold assembly--always replace all gaskets

 
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