RENAULT CLIO 1997 X57 / 1.G Petrol Engines User Guide

ENGINE AND PERIPHERALS
Lubrication circuit dia
gram10
92130
10-9
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ENGINE AND PERIPHERALS
S
pecifications10
CYLINDER HEAD
All the cylinder head bolts must be replaced systematically after removal.
Lubricate the threads and under all the bolt heads with engine oil.
90775S
METHOD OF TIGHTENING CYLINDER HEAD
Preseating the gasket
Initial tightening to 2 daN.m followed by angular tightening of 97° ±
2°
in the recommended order :
- tightening of
bolts 1-2,
- tightening of bolts 3-4-5-6,
- tightening of bolts 7-8-9-10.
Seatin
g of the gasket
Wait 3 minutes for the seal to settle.
Tightening
- Slacken bolts 1-2.
Re-tighten bolts 1-2 to 2 daN.m, then angle tighten to 97°
± 2°.
- Slacken
bolts 3-4-5-6.
Re-tighten
bolts 3-4-5-6 to 2 daN.m, then angle tighten to 97°
± 2°.
- Slacken bolts
7-8-9-10.
Re-tighten
bolts 7-8-9-10 to 2 daN.m , then angle tighten to 97°
± 2°.
No retightening of cylinder head.
Cylinder head gasket
Thickness of cylinder head gasket (mm): 1.3± 0.06(value for a compressed gasket)
10-10
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ENGINE AND PERIPHERALS
S
pecifications10
VALVE CLEARANCES (in mm)
- Inlet0.10
- Exhaus
t0.25
Hei
ght of cylinder head
10032R
H = 113 ±
0.05 mm
Maximum deformation of
gasket face: 0.05 mm.
No re
grinding is permitted.
C
ylinder volume with valves
and s
park plugs:
26.25 ±
0,6 cm3
Spark plug tightening torque: 2.5 to 3 daN.m
VALVES
Diameter of the stem (mm) :
7
Port an
gle
- Inle
t120°- Exhaust90°
Head diameter (mm)
- Inlet37.5 ±
0,1
- Exhaust33.5 ±
0,1
WARNING: When valves are re
placed, it is essen-
tial to refit
(new) valves with the same part num-
ber
(1) as the previous ones, in order to prevent
an
y damage to the valve and seat.
10030R
The same part number can cover several mar-
kin
gs, and in this case the valves are fully inter-
chan
geable.
Sim
ply check that the new valves with a different
markin
g do indeed correspond to the same part
number.
10-11
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ENGINE AND PERIPHERALS
S
pecifications10
87428R91881R
VALVE GUIDES
Inside diameter ( mm)
Normal7
Outside diameter in the cylinder head (mm)
Normal12
The inlet and exhaust guides are fitted with valve
stem seals. They must be replaced whenever the
valves are removed.
Inclination of the guides:
- Inletβ
= 17°
- Exhaus
tβ
= 17°Position of the guide in relation to the bottom of
the valve spring (without lower cup) (mm) :
- Inlet:
A = 12.34
- Exhaust:E = 12.34
91881-1R
VALVE SEAT
Seat angle
∝- Inlet 120°- Exhaust90°
Width of the seats (mm) X
- Inlet1.7 ± 0,1- Exhaust1.7 ± 0,1
Outside diameter (mm) D
- Inlet38.5
- Exhaust34.5
10-12
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ENGINE AND PERIPHERALS
S
pecifications10
VALVE SPRINGS
NOTE : The Parts Department only supplies 2nd
fitting springs.
CAMSHAFT
End play
( mm) :0.06 to 0.15
Number of bearings:5
Free length (mm)46.64 44.93
Length under load
(mm)
- 27 daN.m
- 53.6 daN.m
- 65 daN.m
37
27.5
-37
-
27.6
Length of spring
( mm)23.63 26.01
Wire diameter
(mm) 3.8 4
Inside diameter
(mm)21.5 21.5
1st
fittin
g
(black)
2nd
fittin
g
(orange)
10-13
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ENGINE AND PERIPHERALS
S
pecifications10
* Since the Inlet Opening Retard is negative,
the opening of the valve is located after TDC.
** Since the Exhaust Closing Advance is negative,
the closing of the valve is located before TDC.
11953S
Timing diagram: (cannot be checked)
1 - Fixed mark TDC cylinder block
2 - Mobile mark flywheel TDC
3 - Mobile mark flywheel BDC
4 - Inlet Opening Retard (IOR)
5 - Exhaust Closing Advance (ECA)
6 - Inlet Closing Retard (ICR)
7 - Exhaust Opening Advance (EOA)
8 - Engine rotation direction (flywheel end) Inlet Opening Retard (IOR) * - 2 - 6 - 4
Inlet Closing Retard (ICR) 39 43 30
Exhaust Opening Advance (EOA) 48 44 40
Exhaust Closing Advance (ECA) ** - 7 - 3 - 6
E5F 710 - 716
E7F 700 - 704 - 706 -
730
E7J 624 -718 - 719 -
720
E6J 700 - 701 - 706 -
712 - 713 - 718 - 734
738 - 760
E7J 601- 700 - 706 -
710 - 711 - 716 - 724
726 - 728 - 742 - 745
754 - 756 - 757 - 764
770 - 771 - 773
E7F 708 - 750
10-14
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ENGINE AND PERIPHERALS
S
pecifications10
PISTONS
The gudgeon pin is press fitted in the connecting
rod and fully floating in the piston.
Direction of mounting: arrow pointing towards
flywheel end.
Gud
geon pins (mm)
Length60
Outside diamete
r19
Inside diamete
r11
Piston markin
g
SMP piston
12618R
Direction of piston: arrow (1) pointing towards
the flywheel end.
The piston class is at (2) (piston class
A - B - C).
The marks (3) are intended for the supplier only.
MARKING OF THE PISTON DIAMETER IN
RELATION TO THE CYLINDER DIAMETER
Piston
markPiston
diameter
(mm)
Cylinder
diameter
(mm)
A75.765 -75.775
(exclusive)75.8 to 75.81
(exclusive)
B75.775 - 75.785
(incl.) (excl.)75.81 to 75.82
(incl.) (excl.)
C75.785 - 75,795
(inclusive)75.82 to 75.83
(inclusive)
Raised metal piston
12617R
10-15
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CYLINDER LINERS
The cylinder liners are the wet type.
They have an O-ring at the base (J).
Height of liners
(mm)H2 = 130
Inside diameter
(mm)75.8
Centring diameter
(mm)D = 80.6
Protrusion of liners
without seal
(mm)X = 0.02 to 0.09
Height of liners
(mm)H1 = 91.5
Cylinder bloc
k
depth (mm)K1 = 91.5
ENGINE AND PERIPHERALS
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pecifications10
Rings (thickness in mm)
Upper piston ring
1.5
Taper compression piston ring
1.75
Scraper ring
3
CONNECTING RODS (mm)
Side clearance of the
big end (mm)0.310 to 0.572
WARNING: Do not use a scriber tool for the mar-
kin
g, in order to avoid starting any cracks in the
connectin
g rods.
Use an indelible
pencil instead.
+0.03
0
+0.035
+0.005
- 0.015
- 0.055
75615R4
Measurement of piston diameter
The diameter must be measured at dimension
A
= 46 mm.
86928-4R
10-16
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ENGINE AND PERIPHERALS
S
pecifications10
CRANKSHAFT
Number of bearings5
Roll hardened
journals (mm):
- nominal diameter 54.795 ± 0.01
- repair diameter 54.550 ± 0.005
Roll hardened crankpins (mm)
:
- nominal diamete
r43.98
- repair diameter43.73
End float 0.045 - 0.852 worn
0.045 - 0.252 unworn
There are shims of various thicknesses.
If grinding is carried out, the roll hardening mus
t
remain intact over an angle of 140° in the areas
shown by the arrows.
These areas are defined on sections (A) and (B) ta-
ken as an example.
0
- 0.02
0
- 0.02
79260-1G1
OIL PUMP
Minimum oil pressure at 80
°C:
- Idle spee
d1 bar
- 4000 rpm3 bars
The pump is of the gear pump type.
Remove the cover and the valve of the oil pump.
92313S
Checking the oil pump
Check the clearances:
Clearance
A(in mm) :
- minimum
0.110
- maximum0.249
80142R1
10-17
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ENGINE AND PERIPHERALS
S
pecifications10
Clearance B (in mm) :
- minimum0.020
- maximum0.086
92362R
Securing engine on mounting Mot. 792-03
Rods
Mot. 1132 (
Q ;
S ;
R) are secured to the
cylinder block so that they fit into the holes (
12 ;
27 ;
7
) in the plate.
92668R10099-2R1
10-18
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