M20 Engines

323i

320/6

Production dates:

11/77 - 01/82

08/77 - 08/82

Type:

inline watercooled 6

inline watercooled 6

Bore x Stroke mm

80 x 76.8

80 x 66

Displacement cc

2315

1990

Valve Operation

SOHC

SOHC

Valves / cyl

2

2

Compression Ratio

9.5 : 1

9.2 : 1

Injection / Carburetor:

Bosch K-Jetronic

Solex 4A1

Max Torque

190Nm @ 4500

160Nm @ 4000

BHP (DIN)

143 @ 5800

122 @ 6000

Max rev count (RPM)

6400

6400

Engine type code

M 20

M 20

Timing by:

belt

belt

CO %

1-2

1.5

Idle speed (RPM)

850-950

800-900

M10 Engines

320i

320

318i

318

316

316

315

Production dates:

11/75 - 03/77

08/75 - 03/77

08/80 - 12/82

08/75 - 07/80

08/80 - 12/81

08/75 - 07/80

02/81 - 08/82

Type:

inline watercooled 4

inline watercooled 4

inline watercooled 4

inline watercooled 4

inline watercooled 4

inline watercooled 4

inline watercooled 4

Bore x Stroke mm

89 x 80

89 x 80

89x71

89 x 71

89 x 71

84 x 71

84 x 71

Displacement cc

1990

1990

1766

1766

1766

1573

1573

Valve Operation

SOHC

SOHC

SOHC

SOHC

SOHC

SOHC

SOHC

Valves / cyl

2

2

2

2

2

2

2

Compression Ratio

9.3 : 1

8.1 : 1

10 : 1

8.3 : 1

9.5 : 1

8.3 : 1

9.5 : 1

Injection / Carburetor:

Bosch K-Jetronic

Solex DIDTA 32/32

Bosch K-Jetronic

Solex DIDTA 32/32

Solex 2B4

Solex DIDTA 32/32

Solex 1B2

Max Torque

175Nm @ 4350

160Nm @ 3700

148Nm @ 4500

145Nm @ 4000

143Nm @ 4000

125Nm @ 4000

110Nm @ 3200

BHP (DIN)

125 @ 5700

109 @ 5800

105 @ 5800

98 @ 5800

90 @ 5500

90 @ 6000

75 @ 5800

Engine type code

M 10

M 10

6400

M 10

6400

M 10

6400

Timing by:

chain

chain

M 10

chain

M 10

chain

M 10

CO %

3.0 (max)

1.5

chain

1.5

chain

1.5

chain

Idle speed (RPM)

850-950

850-950

1.1

850-950

1.0

850-950

1.5