Porsche 928 Workshop Manual page 161

a
928
Engine, Crankshaft Drive, Pistons
13
Machining cylinders with SUNNEN - 10 / CV 616
honer
E.g.
Cylinder diameter
Standard 100.00 ma
Cylinder diameter
1st
oversize
100.50 mm
Cylinder length
145 mm
Type of honing
head
Lift scale for
stone length
Reading on scale
Speed in rpm
Strokes per min.
Advance
Stone protruding
by at top
Roughing stone
Finishing stone
Polishing stone
Felt stone
Display %
Material removed
Advance wheel
setting
Surface roughness
A=lst roughing to
A
100.40 mm
CK-3000 or
CK-2600
70 mm
160 mm
125 CK/CV
49 CK/57 CV
5
21 mm
C 30
- J 55
30 - 40
0.07 mm/
10 strokes
Approx.
7- 8my
a. B=finishinS
B
100.48 mm
dto.
70 mm
160 mm
1.25 CK/CV
49 CK/57 CV
4
21 mm
C 30 - J 84
30 - 40
0.03 mm/
10 strokes
Approx.
2
my
o dia. C=poli:
C
100.50 mm
dto.
70 mm
160 mm
125 CK/CV
49 CK/57CV
3
21 mm
C 30-CO3-81
20 - 30
0.01 mm/
10 strokes
Approx.
0.6 - 0.8 m
ing to dia. D
00.50 ml
to.
70 mm
25 mm
85 CK
30 cv
3CK/80CV
2
2 mm
C30-F 85
20 - 30
approx.
20
strokes
80 sec.
running
time
Approx.
l-2 my
win9
Printed in Germany -
XII, 1986
Remachining Cylinder Bores 13 - 29