Porsche 912 E - Page 51

15
Engine, Cylinder Head, Valves
Description
Qty.
Note when
Remarks
No.
Removing
Installing
21
Cylinder head
2
Check
for cracks in
combustion chambers
and exhaust ports, also
for leaks along cylinder
mating surfaces. Check
spark plug threads
for
damage or tightness.
Install
heli -coil inserts
if necessary.
Left cylinder head has
threaded bore
for
temperature sensor.
22
Screw M 5 x 10
2
23
washer
2
24
Screw M 6
4
25
Washer
4
26
Baffle
2
Left and right different.
27
Valve keeper
16
Replace worn valve
keeper.
28
Valve spring retainer
8
29
Valve spring
8
-
30
Not applicable
31
Intake valve
4
Use VW 31ls. Check
Coat valve
stem with
See page
seat
for burnt spots or
molybdenum disulfide
15 - 5
wear,
reface if
paste.
necessary.
Remove burrs from
keeper bearing sur-
faces.
33
Intake valve guide
4
Check for wear.
See page
15 - 8
34
Exhaust valve guide
4
15-4
Cylinder Head and Valves Exploded View
Printed
in Germanv