Cylinder Head Installation
Install the cylinder head in the reverse order of removal:NOTE:
- Always use a new head and manifold gasket.
- The cylinder head gasket is a metal gasket. Take care not to bend it.
- Rotate the crankshaft, set the No. 1 piston at TDC . Do not use the middle cover and lower cover for storing removed items.
- Clean the middle cover and lower cover before installation.
- Replace the washer when damaged or deteriorated.
1. Install the cylinder head gasket, dowel pins and the head oil control orifice on the cylinder block.
NOTE: Clean the oil control orifice when installing.
Cylinder Head Bolt Torque Sequence:
2. Tighten cylinder head bolts in two steps. In the first step, tighten all bolts in sequence to about 29 Nm (3.0 kgf.m, 22 ft. lbs.). In the final step, tighten in same sequence to 85 Nm (8.7 kgf.m, 63 ft. lbs.).
NOTE: Apply clean engine oil to the bolt threads and under the bolt head.
B18C1 Engine:
B18C5 Engine:
3. Install the intake manifold and tighten the nuts in a crisscross pattern in two or three steps, beginning with the inner nuts.
B18C1 Engine:
B18C5 Engine:
4. Install the exhaust manifold and tighten the new self-locking nuts in a crisscross pattern in two or three steps, beginning with the inner nuts.
- Use new self-locking nuts.
5. Install the camshafts and camshaft oil seals.
NOTE:
- Install the camshafts with keyway facing up.
- Install the oil seal with the spring side facing in.
- The oil seal housing surface should be dry.
- Set the O-ring and dowel pin in the oil passage of the No. 3 camshaft holder.
6. Apply liquid gasket to the head mating surface of the No. 1 and No. 5 camshaft holders on both the intake and exhaust side. Confirm that the camshaft keyways face up, then place those holders, together with the No. 2, No. 3 and No. 4 camshaft holders, on the cylinder head.
NOTE:
- The arrows marked on the camshaft holders should point to the timing belt.
- Clean and dry the cylinder head mating surfaces before applying liquid gasket.
7. Temporarily tighten the bolts of the camshaft holders and the camshaft holder plates.
Torque Sequence:
8. Tighten the bolts in the sequence shown below.
NOTE: Wipe off the excess of liquid gasket from No. 1 and No. 5 camshaft holder with a shop towel.
9. Align the marks on the cylinder head plug to the cylinder head upper surface, then install the cylinder head plug in the cylinder head to the end.
10. Install the back cover and camshaft pulleys.
11. Install the timing belt.
12. Adjust the valve clearance.
13. Install the rubber seal in the groove of the cylinder head cover. Seat the seal in the recesses for the camshaft first, then work it into the groove around the outside edges.
NOTE:
- Before installing the rubber seal, thoroughly clean the seal and the groove.
- When installing, make sure the seal is seated securely in the corners of the recesses with no gap.
14. Apply liquid gasket to the rubber seal at the eight corners of the recesses.
NOTE:
- Use liquid gasket, Part No. 08718 - 0001 or 08718 - 0003.
- Check that the mating surfaces are clean and dry before applying liquid gasket.
- Do not install the parts if 5 minutes or more have elapsed since applying liquid gasket. Instead, reapply liquid gasket after removing old residue.
- After assembly, wait at least 30 minutes before filling the engine with oil.
15. When installing the cylinder head cover, hold the rubber seal in the groove by placing your fingers on the camshaft contacting surfaces (top of the semicircles).
Once the cylinder head cover is on the cylinder head, slide the cover slightly back and forth to seat the rubber seal.
NOTE:
- Before installing the cylinder head cover, clean the cylinder head contacting surfaces using a shop towel.
- Do not touch the parts where liquid gasket was applied.
16. Tighten the nuts in 2 or 3 steps. In the final step, tighten all nuts, in sequence, to 9.8 Nm (1.0 kgf.m, 7.2 ft. lbs.).
17. After installing, check that all tubes, hoses and connectors are installed correctly.