Porsche 912 E - Page 56

5. Drive .out drilled guides with a drift.
6. Coat 1st oversize valve guides with engine oil
and install them with the aid ofa press.
Printed in Germany
Engine, Cylinder Head, Valves
15
Caution
The pressure for installing should be between 1 and
2 tons.
7. Ream inside bores of valve guides. Always use
a cutting solution while
reaming.
8. Check dimensions of reamed valve guides.
9. Reface valve seats.
Replacing Valve Guides
15 - ·9