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| Illustration 1 | g00819698 |
(1) Dowel pins
The dowel pins in the cylinder block hold the cylinder head gasket in the correct position when the cylinder head is installed.
(2) Cylinder head gasket
| Selection of Head Gasket for the C1.5 Engines | |
| Piston Height above Top Face of Cylinder Block | Gasket Thickness |
0.60 to 0.69 mm (0.0236 to 0.0272 inch) |
1.3 mm (0.051 inch) |
0.70 to 0.79 mm (0.0276 to 0.0311 inch) |
1.4 mm (0.055 inch) |
| Selection of Head Gasket for the C2.2 Engine | |
| Piston Height below Top Face of Cylinder Block | Gasket Thickness |
+0.35 to +0.50 mm (+0.0138 to +0.020 inch) |
1.2 mm (0.047 inch) |
+0.5 to + 0.6 mm (+0.020 to + 0.024 inch) |
1.3 mm (+0.051 inch) |
(3) The stamped marking on the cylinder head gasket must face upward. This ensures that the cylinder head gasket is installed correctly.
Tightening Procedure for the Cylinder Head
C1.5 Engine
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| Illustration 2 | g01317351 |
Use the following procedure in order to tighten the bolts for the cylinder head.
- Put clean engine oil on the threads of the bolts. The bolts are tightened in the numerical sequence that is shown in Illustration 2.
Torque for bolts
- C1.5 ... 101 N·m (74.5 lb ft)
- Repeat the procedure in step 1 to ensure that all of the bolts are tightened to the correct torque.
C2.2 Engines
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| Illustration 3 | g01309552 |
Use the following procedure in order to tighten the bolts for the cylinder head.
- Put clean engine oil on the threads of the bolts. The bolts are tightened in the numerical sequence that is shown in Illustration 3.
Torque for bolts
- C2.2 ... 101 N·m (74.5 lb ft)
- Repeat the procedure in step 1 to ensure that all of the bolts are tightened to the correct torque.
Measuring the Distortion of the Cylinder Head
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| Illustration 4 | g00900977 |
Typical example | |
Distortion of the cylinder head ... 0.00 to 0.05 mm (0.000 to 0.002 inch)
Maximum service limit ... 0.12 mm (0.005 inch)
Maximum limit for regrinding ... 0.15 mm (0.006 inch)
Note: Use a straight edge and a feeler gauge to check the six positions for distortion.
Refer to Systems Operation, Testing and Adjusting, "Cylinder Head - Inspect" for the procedures for measuring the cylinder head.
Note: If the cylinder head has been machined, check the valve depth below the cylinder head face. Refer to Specifications, "Cylinder Head Valves" for valve depth.