Porsche 924 Workshop Manual page 93

15
Engine
I
Cylinder Head , Valves
CHECK I NG AND ADJUSTING VALVE
CL EA RANCE
Valve clearances are checked and adjusted on
a warm engine: about 80° C (176°F) oil tempera-
ture .
Intake valve:
Exhaust valve:
0 , 20 mm
0 , 45 mm
Basic Valve Clearance Setting
(when reconditioning engines etc. )
Cold Engine
Intake valve:
Exhaust valve:
0 ,10 mm
0 . 40 mm
ADJUSTING VALVE CLEARANCE
1 . Remove cylinder head cover .
2 . Turn crankshaft until the cam lobes of the
cylinder to be adjusted point upward .
15 - 16
Checking and Adjusting Valve Clearance
CAUTION
Do not turn camshaft by sprocket mounting
boll, since this will stretch drive belt .
Arrangement of valves
1 =exhaust 2 =intake
3 . Check valve clearance, if necessary correct
with complete turns of the adjusting screw
(one turn of the adjusting screw will change
valve clearance by 0 , 05 mm) ,
VIIl, 1080 - Pr inted in Germany