Sidekick JSS 4D Hard Top 2WD L4-1.8L (1997)
1. Exhaust Valve Seat: Use valve seat cutters to make two cuts as illustrated in figure. Two cutters must be used: the first for making 15° angle,
and the second for making 45° angle. The second cut must be made to produce desired seat width.
Seat Width For Valve Seat: 1.1 - 1.3 mm (0.0433 - 0.0512 inch)
2. Intake Valve Seat: Use valve seat cutters to make three cuts as illustrated in figure. Three cutters must be used: the 1st for making 15° angle,
the 2nd for making 60° angle, and 3rd for making 45° angle. The 3rd cut (45°) must be made to produce desired seat width.
Seat Width For Intake Valve Seat: 1.1 - 1.3 mm (0.0433 - 0.0512 inch)
3. Valve Lapping: Lap valve on seat in two steps, first with coarse size lapping compound applied to face and the second with fine-size
compound, each time using valve lapper according to usual lapping method.
Cylinder Head
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Remove all carbon from combustion chambers.
NOTE: Do not use any sharp-edged tool to scrape off carbon. Be careful not to scuff or nick metal surfaces when decarboning. The same applies
to valves and valve seats, too.
