Porsche 928 Workshop Manual page 513

928 Ignition System
28
a
Spark Plugs
a
a
Type/Model
.Version Remarks
Y28
Bosch WR 8 DS 0.7 + 0.1 mm
Beru RS 35
(0. 028 + 0. 004 in.)
-
Control Unit
Type/Model
928
1
Version
-
928 60270202
Bosch No.
A 227 010 123
Remarks
Transistor
coil ignition
The vacuum control of the distributor is changed from 140 - 240 range mbar to 360
470 mbar
beginning with 1981 models,
Part No. for distributor is 928. 602. 032. 04 (Bosch No. 0237 405 020).
a
Printed inGermany VII, 1983
Ignition Components 28 21