Saab 9000 Manuale utente

Saab 9000

SERVICEMANUAL

2: I Basicengine B234

News supplement

M 1990-

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Saab9000

SERVICE

MANUAL

2:1 Basic engine B234

News supplement

M 1990-

022 Technical data

102 Special tools

200 Technical description

201 Powertrain

210 Engine

211 Cylinder head

Pistons, connecting rods and cylinder

212 bores

214 Valve gear

215 Timing chain

216 Crankshaft assembly

220 Lubricating system

232 Induction system

234 Fuel pump and fuel tank

LH 2.4.1 fuel-injection system,

240 diagnostics

254 Exhaust emission control

321 Alternator

331 Starter motor

340 Ignition system

400 Transmission

299 Alphabetical section guide

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Units

The basic and derived units used throughout the Service Manual

are in accordance with the SI system.

For users not familiar with the SI units, some non-Continental units

are given in brackets after the respective SI unit.

The following symbols and abbreviations are used:

SI unit

bar

I (liter)

ºC

Conversionfactors

1in=25.4mm

1Ibf = 4.45N

1 lbfft = 1.36 Nm

1 psi= 0.07 bar

11iq qt = 0. 95 I

1 USliq qt= 0.83 UKqt

°F = °Cx 9/5

Equivalentunit and symbol

inch (in)

pound (lb)

pound-force (lbf)

pound-force foot (lbfft)

pound-force per square inch (lbf/in

(Also abbreviated: psi)

US liquid quart (liq qt)

(Also abbreviated: qts)

USgallon (USgal)

ºF

1 mm= 0.039 in

1N=0.23Ibf

1Nm=0.741bfft

1 bar= 14.5 lbf/in

11 = 1.05 Iiq qt

1 USgal

0.83 UKgal

°C = (°F- 32) x 5/9

Production: Technical Publications. Saab-Scania. Trollhattan , Sweden

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Block and cylinder head

Pistons

Crankshaft

Valve gear

Camshafts

Balance shafts

General data

Engine type

Cylinder bore

Stroke

Swept volume

Firing border

Approximate weight

Technical data 022-1

Technicaldata

. 022- 2

022- 3

022- 6

022-

022- 9

. 022-10

mm(in)

kg (lb)

Tightening torques

Belt tension

Lubricating system

Engine performancegraph

Engine number . . . . .

Transverse 4-cyl inder, 4-stroke

16-va Iveengine with twin overhead

camshafts and twin balance shafts.

90 (3.54)

2290 (139.

1-3-4-2

160 (350)

Saab 9000

022-11

022-12

022-13

022-14

022-15

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022-2 Technical data

Performance, compression ratio, fuel

octane number, etc.

Engine Model

variant year

B234i 1990

* AKI = (MON

+ RON)/2

Octane Suitable

requirement, for

RON(AKI)* unleaded

fuel

Min: 91 (87) Yes

Recommended:

95 (91)

Premium= 91AKI

Regular= 87 AKI

Blockand cylinderhead

Cylinder head

Cylinder bores

Standard (A) mm (in)

Standard (B) mm(in)

First oversize mm(in)

Second oversize mm (in)

Cylinder head

Height of new cylinder head mm(in)

Minimum after regrinding mm (in)

Compression DIN Torque.

ratio rating, Nm (lbfft).

kW (bhp) at at 3,800 rpm

5,500 rpm

10.1 110 (150) 212 (156)

90.000- 90.012 (3.5433- 3.5438)

90.003- 90.020 (3.5434- 3.5441)

90.500- 90.512 (3.5630-3.5635)

91.000- 91.012 (3.5827 - 3.5831)

140.5 ± 0.1 (5.53 ± 0.004)

140.1 ± 0.1 (5.52 ± 0.004)

Saab 9000

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Tightening torques

The specified torques apply to lubricated bolts

and washers and when a new head gasket is fit-

ted.

Stage I Nm (lbf ft)

Stage II Nm (lbfft)

Stage Ill

Tightening sequence

Pistons

Piston speed at 5,000 rpm

Different makes of piston must not

be fitted in the same engine

Piston dimensions

Engine Model year

8234i 1990

mis

mm(in)

Technical data 022-3

60 (44)

80 (59)

Tighten a further quarter-turn (90°)

Radius (R) 0 A

257 (10.12) 75 (2.95) 3.05 (0.120)

Saab9000

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022-4 Technical data

Pistondiameter

This is measured at right angles to the piston

boss, 13 mm (0.52 in) from the bottom of the

skirt.

Classificationof pistonsand cylinder

bores

The piston classification code is stamped on the

piston crown. The codes for servicing are:

The cylinder classification code is stamped on

the block adjacent to each cylinder.

Cylinders are either class A or class B, both of

which may occur in the same block.

Pistonsizes

Standard A (not spare part) mm (in)

Standard AB mm (in)

Standard B mm (in)

Standard C mm (in)

First oversize (0.5 mm) mm (in)

Second oversize (1.0 mm) mm (in)

Piston clearance (nominal) mm (in)

Classlflcatlon,

Piston/cylinder

A/A mmx10-

AB/A mmx10-

AB/B mm x 10-

8/8

mmx 10-

89.971-89.980 (3.5422-3.5425)

89.980- 89.989 (3.5425-3.5429)

89.989-89.997 (3.5429-3.5432)

89.997 -90.013 (3.5432-3.5438)

90.4 72- 90.488 (3.5619-3.5625)

90.972-90.988 (3.5816-3.5822)

0.007 - 0.037 (0.0003- 0.0015)

Clearance

20-41

11-32

14-40

6-31

13mm

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Piston rings

Width

(thickness)

Side

clearance in groove

Working gap in new

cylinder

mm (in)

mm(in)

mm (in)

* Segment width (thickness): 0.51 mm (0.020)

** Applies to segment

Gudgeon pins

Diameter

Fit

Connecting rods

Diameter of big-end

Diameter of small-end bush

(bush fitted)

Maximum permissible weight

variation per set

Length

mm(in)

mm (in)

g (oz)

mm (in)

Technical data 022-5

Top

compression

ring

Second

compression

ring

Oil-scraper

ring

1.728-1.740 1.98-1.996 2.934-3.052*

(0.0680-0.0685) 0.078- 0.0779) (0.1155-0.1202)

0.040-0.072 0.040-0.072

(0.0016-0.0028) (0.0016-0.0028)

0.3-0.5 0.30- 0.45 0.38-1.40**

(0.0118-0.0197) 0.0118 - 0.0177) 0.0149- 0.0551)

23.996- 24.000 (0.944 7 -0.9449)

0.001-0.010 (0.0001-0.0004)

(sliding fit under gentle thumb pressure)

56.000- 56.019 (2.204 7 - 2.2055)

24.005 - 24.010 (0.9451-0.9453)

6 (0.21)

14 7 (5. 79)

Saab 9000

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022-6 Technical data

Crankshaft

Alignment- max variation

in straightness mm (in)

Endfloat mm (in)

Maximum journal

out-of-round mm (in)

Maximum taper of journals mm (in)

Radius main journalfillet mm (in)

Main bearing clearance mm(in)

Length mm (in)

Colour markings of main-bearing and

big-end bearing shells

Standard

First undersize

Second undersize

Crankpin diameter

Standard mm (in)

First undersize mm (in)

Second undersize mm (in)

Third undersize mm (in)

Fourth undersize mm (in)

Big-end bearing clearance mm (in)

Main Journaldiameter

Standard mm (in)

First undersize mm (in)

Second undersize mm (in)

Third undersize mm (in)

Fourth undersize mm (in)

0.10 (0.004)

0.06- 0.31 (0.002- 0.012)

0.05- (0.002)

1.65-1.85 (0.065-0.073)

0.020-0.062 (0.0008- 0.0024)

543 (21.4)

Thin Thick

Red Blue

Yellow Green

White Brown

51.981- 52.000 (2.0465-2.0472)

51 .731- 51. 750 (2.0366-2 .0374)

51.481-51.500 (2.0268-2.0276)

51.237 - 51.250 (2.0172-2.0177)

50.987 - 51.000 (2.007 4-2.0079)

0.026- 0.062 (0.0010- 0.0024)

57 .981-58 .000 (2.2827 -2.2835)

57. 731- 57. 750 (2.2729- 2.2736)

57 .481-57 .500 (2.2630-2.2638)

57 .237 -57.250 (2.2534- 2.2539)

56.987 -57.000 (2.2436-2 .2441)

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Technical data 022- 7

Valvegear

29mm

(1.15 in)

980 mm

(0.2738--0 .2748 in)

Exhaust valve

(0.2740--0.2746

in)

32mm

(1.26

in)

Inlet valve

Caution

The exhaust valves are stellited and should

therefore not be machined. Grinding using valve-

grinding (lapping) paste is the only recommen-

ded method.

Valveguides

Length

Outside diameter

Bore for vaIve guides in

cylinder head

Maximum clearance between

valve stem and valve guide

mm(in)

mm (in)

mm(in)

45.0 (1. 77)

12.039-12.050 (0.4740-0.4744)

12.000-12.018 (0.4 724-0.4731)

0.5 (0.02) Measured on valve head

raised 3 mm (0.12 in) above seat

Saab 9000

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