Saab 9000 User manual
Saab 9000
SERVICEMANUAL
2: I Basicengine B234
News supplement
M 1990-
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t
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
mm
kg
N
Nm
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
+
32
© Saab-Scania AB 1990
Equivalentunit and symbol
inch (in)
pound (lb)
pound-force (lbf)
pound-force foot (lbfft)
pound-force per square inch (lbf/in
2)
(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
2
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-
7
022- 9
. 022-10
mm(in)
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)
90 (3.54)
2290 (139.
7)
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°)
-
R
0
15
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:
AB
B
C
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-
3
AB/A mmx10-
3
AB/B mm x 10-
3
8/8
mmx 10-
3
0
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)
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)
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
mm
(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)
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
l5
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