BMW 3-series E30 320iS S14

Standard specifications – Italy or Portugal

Engine

2 door

4 door

 

Production dates:

1987-1989

1987-1989

 

# cars produced

2540

1206*

 

Type:

inline watercooled 4

 

Bore x Stroke mm

93.4 x 72.6

 

Displacement cc

1990

 

Valve Operation

DOHC

 

Valves / cyl

4

 

Compression Ratio

10.8 : 1

 

Injection:

Motronic DME M1.3

 

Injection system pressure

2.3-2.7 Bar

 

Max Torque

210Nm @ 4900

 

BHP (DIN)

192 @ 6900

 

Max rev count (limiter-RPM)

7300

 

Engine type code

S14 B20

 

Timing by:

chain

 

CO % (without Cat!) at idle

1.0 % (+/- 0.5 %) ; 1.5% (my recommendation)

 

HC (ppm) at idle

< 600

 

Intake vacuum

300 mBar +/- 50 mBar

 

   Max difference between cil.

5 mBar

 

Idle speed (RPM)

880 (+/- 50)

 

Oil pressure

 0.5 to 2.0 Bar at idle

 

Oil temperature

80 – 120 deg. C.

 

Cooling fan

Electrical two speed only

 

Alternator (Bosch)

0120469804 (90A)

 

with built in controller no.

N/A

 

Alternator belt size (mm)

10 x 865

 

Power steering belt size (mm)

9.5 x 810

 

Air con belt size (mm)

12.5 x 810

 

Battery

12V 66Ah

 

Starter motor (Bosch)

0001108063 90A/1260W

 

 

 

 

 

Chassis and Drivetrain

 

 

 

Transmission

dogleg sports 5 speed manual

 

Front suspension

MacPherson struts, coil springs, anti-roll bar

 

Rear suspension

Semitrailing arms, coil springs, anti-roll bar

 

Axle Ratio (final drive)

3.46

 

 

 

 

 

General

 

 

 

Length x width x height (mm)

4325 x 1645 x 1380

 

Wheelbase (mm)

2570

 

Track front/rear (mm)

1407/1415

 

Alignment (front toe in-mm)

2.0 (+/- 0.6 mm)

 

Alignment (rear toe in -mm)

2.0 (+/- 0.8 mm)

 

Brakes front/rear

Vented disc / massive disc

 

Minimum thickness

22.5 mm (F) / 10.8 mm (R)

 

Wheels/Tires

alloy 14’’ x 6.5J ET 30 / 195/65R14H

alloy 14’’ x 6J ET35 / 195/65VR14

cross spoke 15’’ x 7J ET 24 / 205/55VR15 (optional)

 

Tyre pressure F/R regular

2.0 / 2.3 bar

 

Maximum Speed (kph)

231

227

 

Acceleration 0-100 kph

7.5

 

Weight (kgs)

1200

1190

 

Cw/Cx aerodynamics

0.34

0.37

 

 

 

 

Fuel consumption (DIN litres/100 km)

 

@ 90 km/h

6.3

 

@ 120 km/h

8.0

 

city

12.8

 

average

9.0

 

 

 

 

 

Engine electrical

 

 

 

Bosch part # / BMW part #

 

 

Alternator

0120469804 / 12 31 1 711 375 (90A)

 

 

Same as E30 316-316iM10-318iM10-M3 and

 

 

E28 518iM10

 

Starter motor

0001108063 / 12 41 1 312 130 (1.4 kW)

 

 

Same as E21 316-318-320M10-320i,

 

 

E12 518-520M10-520i, E30 316-M3

 

Motronic engine mgmt

0261200087 / 12 12 1 312 041 (ML 3.1)

 

 

Unique for 320iS

 

Air flow meter

0280203028 / 13 62 1 307 486

 

 

Same as M3

 

In tank fuel pump

0580453019 / 16 14 1 179 992

 

 

Same as E30 316iM40-318iM40-320i-325i-

 

 

325iX-325e-M3

 

Throttle position sensor

0280120301 / 13 62 1 273 277

 

 

Same as E30 320i-323i-325e-M3,

 

 

E23 745i, E28 520i-525e-528e-M5,

 

 

E24 M6-M635CSi, E34 M5(3.6)

 

Fuel pressure regulator

0280160249 / 13 53 1 711 040 (3.0 Bar)

 

 

Same as E30 316iM10-318iM10-325i-M3,

 

 

E28 518iM10-528i-535i-M5,

 

 

E34 525iM20-530iM30-535i,

 

 

E24 628CSi-635CSi-M6-M635CSi,

 

 

E23 728i-732i-735i, E32 730iM30-735i

 

Ignition coil

?? / 12 13 1 286 087

 

 

Sames as most other BMW’s,

 

 

especially E23-E24-E28-E30-E34

 

 

 

 

 

Standard Equipment

Dogleg 5-speed

Dogleg 5-speed

 

 

25% Limited Slip Diff

25% Limited Slip Diff

 

 

6.5x14 cross spoke alloys

6x14 bottlecap alloys

 

 

Oil temp indicator

Oil temp indicator

 

 

PAS

PAS

 

 

Central locking

Central locking

 

 

M-Tech II spoiler kit

Rear spoiler

 

 

ABS

ABS

 

 

Leather steering wheel & shifter

Shadowline

A/C

 

 

 

Lights in rear view mirror

 

 

 

Metallic paintwork

 

 

 

Sports seats

 

 

 

 

 

 

Valve clearance (cold-mm)

0.26-0.35

0.26-0.35

 

 

 

 

 

Spark Plugs

 

 

 

 Bosch

X5 DTC (Super-3)

 

 Electrode clearance

0.7 mm

 

 Firing order

1-3-4-2

 

 Mounting torque

15-25 Nm

 

 

 

 

 

Miscellaneous

 

 

 

Fuel tank (ltrs)

64 (55 + 9)

 

Cylinder head

Aluminum

 

Lubricant (motoroil)

SAE 10W40 15W40 15W50

(north-western Europe)

 

Change quantity (incl. oil cooler)

4.10 litres

 

Including oil filter add

0.30 litres

 

Oil cooler (separate)

0.55 litres

 

Operating oil temp.

80-120 deg.C.

 

Oil temp should never exceed

130 deg.C.

 

Gearbox oil - manual

SAE 80 / Dexron2

 

Change quantity

1.25 litres

 

Gearbox ratios:

1st 3.72

 

 

2nd 2.40

 

 

3rd 1.77

 

 

4th 1.26

 

 

5th 1.00

 

 

R  4.23

 

Diff oil (25% limited slip)

SAE 90 Transmission

 

Change quantity diff

1.70 litres

 

Power steering

Dexron ATF 77

 

Change quantity

1.2 litres

 

Coolant

9.0 litres (9.5 litres with A/C)

 

A/C change (R12)

875 gr. +/- 25 gr. (1.93 +/- 0.05 lbs)

 

Brake / Clutch

ATE/Castrol/DOT 4

 

Fuel

Unleaded ROZ 98

 

Catalytic converter

N/A

 

 * There seems to be some confusion about the production data for the four door version, but here’s the info I could find using ETK dealer software:

Chassis nos 0615001 u/i 0616074 = 1074 + nos AA98000 u/i AA98131 = 132, total four doors versions of the 320iS produced between 9/87 and 7/90: 1206

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