Table of Contents
Advertisement
274
FIAT· 850 PASSENGER CARS
SPECIFICATIONS AND FITS OF NEW PARTS
CONNECTING RODS
DESCRIPTION
BEARING INSERTS
in
nun
Thickness of standard con rod shells
Connecting rod bearing shell-la-journal:
- clearance of new parts
. . . . . .
. I
.0711 to .0713
.0010 to .0028
1.807 to 1.813
0.026 to 0.071
PISTONS
DESCRIPTION
Standard piston diameter
I
at right angle to pin:
i
Class A
-
.197" (5 nun) apart from skirt top
Class C
Class E
\
Class A
-
.787" (20
mm) apart from skirt
bottom
I
Class C
Class·E
)
first groove
Width of piston ring grooves . . . . ,
second groove
third groove
Piston fit in cylinder, at right angle to pin:
-
.197" (5 mm) apart from skirt top . .
-
.787" (20 mm) apart from skirt bottom .
Piston ring fit to groove land (vertically):
first compression ring: clearance of new parts
second step-cut oil ring: clearance of new parts
.
third radial-slotted oil ring: clearance of new parts
in
2.5563 to 2.5567
2.5571 to 2.5575
2.5579 to 2.5583
2.5567 to 2.5571
2.5575 to 2.5S79
2.5583 to 2.5587
.0703 to .0709
.0793 to .0799
.1558 to .1564
.0024 to .0031
.0020 to .0028
.0018 to .0028
.0010 to .0020
.0011 to .0028
nun
64.930 to 64.940
64.950 to 64.960
64.970 to 64.980
64.940 to 64.950
64.960 to 64.970
64.980 to 64.990
I.
785 to 1.800
2.015 to 2.030
3.957 to 3.972
0.060 to 0.080
0.050 to 0.070
0.045 to 0.072
0.025 to 0.052
0.027 to 0.072
CYLINDER HEAD - VALVES - GUIDES· SPRINGS
DESCRIPTION
in
nun
Bore of valve guides fitted in head
.
.
.
.2768 to .2775
7.030 to 7.048
Valve stem-to guide fit:
-
clearance of new parts
.
.
.0012 to .0025
0.030 to 0.063
Valve head diameter
I
intake
1.142
29
exhaust
1.024
26
1
intake
.
.
1.024
26
Valve seat I. D.
exhaust
.905
23
.
.
.
(continued)
Advertisement
Table of Contents
