BMW 3-series E21, 1980> European model

Standard specifications

 Engine

323i

320/6

318i

316

315

Production dates:

11/77 - 01/82

08/77 - 08/82

08/80 - 12/82

08/80 - 12/81

02/81 - 08/82

Type:

inline watercooled 6

inline watercooled 6

inline watercooled 4

inline watercooled 4

inline watercooled 4

Bore x Stroke mm

80 x 76.8

80 x 66

89x71

89 x 71

84 x 71

Displacement cc

2315

1990

1766

1766

1573

Valve Operation

SOHC

SOHC

SOHC

SOHC

SOHC

Valves / cyl

2

2

2

2

2

Compression Ratio

9.5 : 1

9.2 : 1

10 : 1

9.5 : 1

9.5 : 1

Injection / Carburetor:

Bosch K-Jetronic

Solex 4A1

Bosch K-Jetronic

Solex 2B4

Solex 1B2

Max Torque

190Nm @ 4500

160Nm @ 4000

148Nm @ 4500

143Nm @ 4000

110Nm @ 3200

BHP (DIN)

143 @ 5800

122 @ 6000

105 @ 5800

90 @ 5500

75 @ 5800

 

Max rev count (RPM)

6400

6400

6400

6400

6400

Engine type code

M 20

M 20

M 10

M 10

M 10

Timing by:

belt

belt

chain

chain

chain

CO %

1-2

1.5

1.1

1.0

1.5

Idle speed (RPM)

850-950

800-900

850-950

900

850-950

Oil pressure

0.5 to 1.2 bar at idle to over 4.0 bar running

Fan belt size (mm)

9.5 x 950

9.5 x 950

9.5 x 975 (auto 950)

9.5 x 875 (auto 850)

9.5 x 875

Alternator (Bosch)

0120489718 (65A)

0120489686 (55A)

0120489718 (65A)

0120489645 (45A)

with built in controller no.

0192052004

0192052004

0192052004

0192052004

Starter motor (Bosch)

0001311125

0001311100

 

E21 outside measures - click to enlarge

Chassis and Drivetrain

 

 

 

 

 

Transmission

5 speed manual

4 speed manual

4 speed manual

4 speed manual

4 speed manual

Front suspension

MacPherson struts, coil springs, anti-roll bar

MacPherson struts, coil springs, anti-roll bar

MacPherson struts, coil springs, anti-roll bar

MacPherson struts, coil springs, anti-roll bar

MacPherson struts, coil springs, anti-roll bar

Rear suspension

Semitrailing arms, coil springs, anti-roll bar

Semitrailing arms, coil springs, anti-roll bar

Semitrailing arms, coil springs, anti-roll bar

Semitrailing arms, coil springs, anti-roll bar

Semitrailing arms, coil springs, anti-roll bar

Axle Ratio

3.45

 3.64

 3.91

 3.91

4.10

 

 

 

 

 

 

General

 

 

 

 

 

Wheelbase (mm)

2563

2563

2563

2563

2563

Track front/rear (mm)

1388/1401

1387/1396

1366/1376

1366/1376

1366/1376

Alignment (front toe in-mm)

1.5 (+/- 0.5 mm)

Alignment (rear toe in -mm)

2.0 (+/- 0.8 mm)

Brakes front/rear

Vented disc / massive disc

Vented disc / Drum

Vented disc / Drum

Vented disc / Drum

Vented disc / Drum

Wheels/Tires

steel 13"x5.5J / 185/70HR13

steel 13"x5.5J / 185/70HR13

steel 13"x5.5J / 185/70HR13

steel 13"x5.5J / 185/70HR13

steel 13"x5J / 165SR13

Maximum Speed (kph)*

201

180

173

167

160

Acceleration 0-100 kph*

8.3

10.0

11.5 

12.5 

14.0

Weight (kgs)

1110

1090

1030

1020

1010

Battery (Ah)

55

44

44

44

44

Fuel consumption (DIN litres/100 km) - with standard 5 - gearbox

 

 

 

@ 90 km/h

6.8

7.2

6.3

6.2

6.0

@ 120 km/h

9.1

9.6

8.4

8.3

8.2

city

12.8

13.0

10.4

11.0

10.5

 *figures from tests in leading German car magazines

 

 

 

Standard Equipment

 (including equipment of lower range models)

 

 

Tinted glass

Model-badge in front grill

 

Chrome window frames

Heated rear window

 

Power mirrors L+R

Rev counter with integrated LED clock

 

Lighted glove compartment

Power mirror L

 

 

Luxury interior trim, w/cloth door panels

 

Toolbox

Bilux headlights

 

 

Dual halogen headlights H4

 

Halogen headlights H4

Quartz clock

 

 

Lighted hood & bonnet

 

Integrated rear fog light

Rear safelty belts: 2 auto, 1 manual

 

 

 

 

 

Electronic ignition

Options

 

 

 

 

 

Power steering rack

5-speed manual gearbox (eco or sports)

3-speed automatic gearbox

Tinted glass

Manual sunroof, metal

Leather 3-spoke sports steering wheel

Leather gear knob

Headlights wipers

Rev counter with integrated LED clock

Alloy wheels (13")

Rear headrests

Recaro and/or leather seats

Bavaria radio-cassette

Extended tool kit

Powered antenna

Power mirror R

Fog lights (mounted under front bumper)

Clearcoated metallic paint

 

 

 

 

 E21 gearbox types

 

 

 

 

 

 

 

 E21 fusebox

 

 

 

 

 

 

 

E21 paintwork and interior colors

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

All models

 

 

Valve clearances (cold)

in (mm)

out (mm)

Fuel tank (ltrs)

58 (51+7)

 

4 cyl. > 81 

.15

.20

Cylinder head

Aluminum

 

316 81>

.20

.20

Lubricant (motoroil)

SAE 10W40 SE

 

318i 81>

.20

.25

Change quantity 4 cyl.

3.75 litres

 

all 6-cyl.

.25

.25

Change quantity 6 cyl.

4.00 litres

 

 

 

 

Including oil filter add

0.25 litre

 

Min. Brake disc thickness - front solid

10.7 mm

Gearbox oil - manual

SAE 80

 

 

- front vented

20.0 mm

Change quantity 4 sp.

1 litre

 

 

- rear

  8.0 mm

Change quantity 5 sp.

1.4 litres

 

 

Handbr. lever travel 

5-8 clicks 

Gearbox oil - auto

Dexron ATF

 

 Firing order

 

 

Change quantity auto

2 litres

 

 4 cylinder

1 - 3 - 4 - 2

 

Diff oil

SAE 90 Transmission

 

 6 cylinder

1 - 5 - 3 - 6 - 2 - 4 

 

Change quantity diff

0.95 litres

 

 

 

 

Power steering

Dexron ATF 77

 

 Spark Plugs

 

 

Change quantity

1.2 litre

 

 Bosch

W 8 D or W 7 DC 

 

Coolant 4-cylinder

7.2 litres

 

 Champion

N 10 Y 

 

Coolant 6-cylinder

12 litres

 

 Gap:

0.6 +/- 0.1 mm

 

Brake / Clutch

ATE/Castrol/DOT 4

 

 

 

 

 Fuel

Leaded ROZ 98 

 

 

 

 

Units produced total for all E21 3-series 1978-1982: 1,001,521