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lubrication system is provided with (1) full
to main
bearings, connecting
rod
bearings,
cam-
bearings,
(2)
metered pressure to valve mechanism
timing
gear,
(3) pressure jet to cylinder walls, (4)
cooling system provides adequate cooling to the
high output
engine.
Notable cooling system fea-
are an 18 inch fan, new larger water pump, aDd full
waler jackets in the
engine.
filter is provided as standard
equipment
in the
This filler
should
be
checked
if fuel system trouble
I,mooulllo'ed and
the filter clement replaced if necessary.
Corvette o'wner may be
able
.
to improve the per-
Irmance and
economy of
his
vehicle
substantially by
"fonnin",
a
few important minor engine service adjust-
required.
The
operations
described below are
to
be
within the scope
of
Owner
maintenance
tbey
may
be performed
without resort to
costly
tools
or equipment.
It
is
recommended that
your
JhM()letdcaler
be
consulted regarding
engine
conditions re-
Frinl~
a,Jju."oelotsorscrvicing other than described herein.
1ro~'IPRjf:SSlION CHECK
making any
checks
on an engine it should
be
run
several minutes
and
allowed to warm up. Lubricate the
mechanism.
The compression
of
c:ach~ylinder
should
be checked first because
AN ENGINE WITH UNEVEN
COMPRESSION CANNOT BE TUNED SUCCESS-
FULLY.
1. Tum the ignition off and block the throttle in an open
position.
Fig.
57-Up,,"
1,lIition
Shi~ld
2.
Remove upper
ignition
shield
(fig.
61) to
expose
spark
plugs (fig. 62).
3. Remove all spark plugs from
engine.
4.
Insert compression
gauge in a spark plug hole
and
hold
it tightly in position. Crank the
engine
with the
starting
motor until gauge reaches its highest reading, which
requires only a few turns of the
engine.
5. Repeat this test on
all
cylinders and make
a
note
of
the:: compression reading on each
cylinder.
39
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