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Table m. Valve specifications
Table m. Valve specifications

Engine-Reconditioning
page 13
Specification 1982 - 1987 528e 1988 528e and all 325i 1983 - 1988 533i, 535i
Valve head diameter (a)
intake

exhaust
40 mm (1.575 in.)

34 mm(1.339 in.)
42 mm (1.654 in.)

36 mm(1.417 in.)
46 mm (1.811 in.)

38 mm(1.496 in.)
Minimum valve head thickness (b)
intake

exhaust
1.3 mm (0.051 in.)

2.0 mm(0.079 in.)
1.3 mm (0.051 in.)

2.0 mm(0.079 in.)
1.3 mm (0.051 in.)

2.0 mm(0.079 in.)
Valve face angle (c) 45░ 45░ 45░
Valve stem diameter (d)

standard
oversize 1
oversize 2
7.0 mm (0.275 in.)
7.1 mm (0.279 in.)
7.2 mm (0.283 in.)
7.0 mm (0.275 in.)
7.1 mm (0.279 in.)
7.2 mm (0.283 in.)
8.0 mm (0.315 in.)
8.1 mm (0.319 in.)
8.2 mm (0.323 in.)

EngineŚReconditioning
page 13

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