PROCEDURE
REPLACE STUD BOLT
Note
If a stud bolt is deformed or threads are damaged, replace it.
Using E6 and E8 "TORX" socket wrenches, install the stud bolts.
| *a | for Bank 2 Intake Side | *b | for Bank 1 Intake Side |
| *c | for Bank 2 Exhaust Side | *d | for Bank 1 Exhaust Side |
| *e | for Bank 2 Front Side | *f | for Bank 1 Front Side |
| *g | 24 mm (0.945 in.) | *h | 52 mm (2.05 in.) |
| *i | 12 mm (0.472 in.) | *j | 45 mm (1.77 in.) |
| *k | 20 mm (0.787 in.) | *l | 14 mm (0.551 in.) |
| *m | 35 mm (1.38 in.) | *n | 13 mm (0.512 in.) |
| *o | 29 mm (1.14 in.) | - | - |
INSTALL NO. 2 STRAIGHT SCREW PLUG
| *1 | for Bank 2: |
| *2 | for Bank 1: |
Using a 14 mm hexagon wrench, install 2 new gaskets and the 2 straight screw plugs.
INSTALL NO. 1 STRAIGHT SCREW PLUG
| *1 | for Bank 2: |
| *2 | for Bank 1: |
Using a 10 mm hexagon wrench, install 6 new gaskets and the 6 straight screw plugs.
INSTALL VALVE SPRING SEAT
Install the valve spring seats to the cylinder head.
INSTALL VALVE STEM OIL SEAL
| *1 | Gray |
| *2 | Brown |
| *3 | Intake Side |
| *4 | Exhaust Side |
Apply a light coat of engine oil to new oil seals.
Note
Pay attention when installing the intake and exhaust oil seals. For example, installing the intake oil seal into the exhaust side or installing the exhaust oil seal to the intake side can cause installation problems later.
Tech Tips
The intake valve oil seals are gray and the exhaust valve oil seals are black.
| *1 | CORRECT |
| *2 | INCORRECT |
Using SST, push in the oil seals.
Note
Failure to use SST will cause the seal to be damaged or improperly seated.
INSTALL INTAKE VALVE
| *1 | 40 mm or more |
Apply plenty of engine oil to the tip area of the intake valve shown in the illustration.
| *1 | Narrow |
| *2 | Wide |
Install the valve, compression spring and spring retainer to the cylinder head.
Note
Install the same parts in the same combination to their original locations.
Install the inner compression spring to the wide end of the cylinder head sub-assembly.
Using SST and wooden blocks, compress the spring and install the retainer lock.
Using a plastic-faced hammer, lightly tap the valve stem tip to ensure a proper fit.
Note
Do not damage the valve stem tip.
Be careful not to damage the retainer.
INSTALL EXHAUST VALVE
| *1 | 40 mm or more |
Apply plenty of engine oil to the tip area of the exhaust valve shown in the illustration.
| *1 | Narrow |
| *2 | Wide |
Install the valve, compression spring and spring retainer to the cylinder head.
Note
Install the same parts in the same combination to their original locations.
Install the inner compression spring to the wide end of the cylinder head sub-assembly.
Using SST and wooden blocks, compress the spring and install the retainer lock.
Using a plastic-faced hammer, lightly tap the valve stem tip to ensure a proper fit.
Note
Do not damage the valve stem tip.
Be careful not to damage the retainer.