940 L4-2.3L SOHC VIN 88 B230F (1992)
Valve Seat Measurement Step #2
7. Measure new valve seat:
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New valve seats are not marked for size and must be measured. Two oversizes are available.
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Valve seat should be 0.17 mm (0.0067 in) larger than recess in cylinder head.
Valve Seat Cutter
8. If grip is less than 0.17 mm (0.0067 in):
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Recut valve seat to oversize.
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Use valve seat cutter, for instance MIRA P/N 998 6045-5. Follow manufacturer's instructions.
Valve seat diameter:
Standard
Intake: 46.00 mm (1.8110 in)
Exhaust: 38.00 mm (1.4960 in)
Oversize 1
Intake: 46.25 mm (1.8209 in)
Exhaust: 38.25 mm (1.5059 in)
Oversize 2
Intake: 46.50 mm (1.8307 in)
Exhaust: 38.50 mm (1.5157 in)
