Mazda MX-3 silhouetteMX-3

ON-VEHICLE MAINTENANCE — Installation Note

B2-29prose procedure

Cylinder head gaskets are bank-specific: gasket marked L on the left bank, marked R on the right bank (V6).

Continued from B2-28

Installation Note

Cylinder head

  1. 1
    Measure the amount of oil control plug projection from the deck of the cylinder block.
    Projection: 8.0-9.0 mm {0.315-0.354 in}
    Cylinder block deck view showing the oil control plugs; a callout labelled O-RING NEW with a leader points to the oil control plug O-ring locations to be replaced with new O-rings.
  2. 2
    Apply clean engine oil to new O-rings and install them to the oil control plugs.
  3. 3
    Thoroughly remove all dirt, oil, and other material from the decks of the cylinder block.
  4. 4
    Turn the crankshaft clockwise and apply engine oil to the cylinder walls.
  5. 5
    Place a new cylinder head gasket (marked L) on the left bank.
    Two cylinder head gaskets shown for the RH and LH banks; the RH gasket has a curved arrow with 'R' marking and the LH gasket a curved arrow with 'L' marking, indicating gasket orientation/identification per bank.
  6. 6
    Place a new cylinder head gasket (marked R) on the right bank.
  7. 7
    Install the cylinder heads to the cylinder block.
  8. 8
    Tighten the cylinder head bolts as described below.
    1. 1
      Before installation, measure the length of each bolt. Replace the bolt if it exceeds the maximum length.
      Cylinder head bolt with a dimension line indicating the measured length 133.7-134.3 mm {5.264-5.287 in}.
    2. 2
      Apply clean engine oil to the threads and the seat face of each bolt, and install them and the washers.
    3. 3
      Tighten the bolts in two or three steps in the order shown.
      Top view of the cylinder head showing the bolt tightening order; numbered callouts top row 6, 2, 3, 7 and bottom row 5, 1, 4, 8.
    4. 4
      Put a paint mark on each bolt head.
      Cylinder head bolt head detail with leader to PAINT MARKS and annotations '85°-95°' indicating the angle each bolt is to be turned using the paint mark as a reference.
    5. 5
      Using the marks as a reference, tighten the bolts by turning each 85°-95° in the sequence shown.
    6. 6
      Further tighten each bolt by turning another 85°-95°.
Oil control plug projectionstep 1
8.0-9.0mm {0.315-0.354 in}
Cylinder head bolt lengthmeasured before installation
133.7-134.3mm {5.264-5.287 in}
Cylinder head bolt maximum lengthreplace if exceeded
135.0mm {5.315 in}
Tightening torque (cylinder head bolts)step 8-(3)
227 - 254N·m
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