740 L4-2320cc 2.3L DOHC B234F (Can) (1992)
NOTE: Use heavy protective gloves when handling chilled assembly tool.
Insert valve seat in cylinder head
Operation must be carried out quickly to maintain maximum possible temperature difference between components.
Check that recess in cylinder head is clean.
Use hammer to tap seat fully home in recess.
Valve seat dimensions
Since seats are not marked dimensions must be measured.
Valve seat
diameter
Intake
Exhaust
Standard
35.98-36.14 mm
32.98-33.14 mm
(1.4222-1.4228 in)
(1.3041-1.3047 in)
Oversized
36.48-36.64 mm
33.48-33.64 mm
(1.4419-1.4425 in)
(1.3238-1.3244 in)
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Valve seats, machining
Machine valve seats to following angles:
Seating face, intake/exhaust
45°
Relief angle, upper
15°
Relief angle, lower
70°
Valve seat width (a)
Intake
1.3-1.9 mm (0.051-0.075 in)
Exhaust
1.7-2.3 mm (0.067-0.091 in)
NOTE: Check that milling cutter is clear of combustion chamber walls.