Porsche 928 Workshop Manual page 265

928 Engine, Cylinder Head, Valve Drive
15
a
928 $4 CLUB SPORT-Version
Identification, scope of modification, ted
and adjustment values
As from Model 88
Engine type M28.41 CLUB SPORT
Note
The identification code "SP" has been
embossed as a suffix to the serial number.
Scope of modification, engine
- New camshafts with different valve-timing
adjustment.
- EZK control unit (see Page 28 - 73),
- LH control unit (see Page 28 73),
- Idle speed: 775 rpm
Modified middle and rear silencer with 2
end pipes.
- Lighter air-conditioning compressor.
a
928 S4 CLUB SPORT-Version
Printed in Germany - XX, 1988
15 - 139