ENGINE
Page
E24
after milling to assist the removal by inserting a suitable drift through the
appropriate port and gently tapping the seat frorn its recess. Ensure that the
recess in the cylinder head
is
ENTIRELY
FREE
OF
FOREIGN
MATTER,
otherwise the new insert will
NOT
seat fully in the recess.
Fig.
l6
Location of valve seat oversize stamping
To Replace
1.
Check the combustion chamber adjacent to the respective seat for a
'C', 'D'
or
'E'
stamping, this indicating that that valve seat was fitted oversize in
Production.
If
this stamping
is
visible, then that size (or larger) seat MUST
be used as replacements. The letters
'C,
D
and
E'
referto the prefix letters
of
the respective part numbers.
ESPRIT
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