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COUPE
300
180
160
240
220
6
5
Fig. 437 _ Carburetor in place on engine.
22. Throttle slop screw. - 33. Volume control screw. - 61. Throttles
,
control rod.
E
J:'
-
: :E
279
ENGINE BENCH TEST
[V
\
-
50
-~
"' "
"-
/ '
45
'"
[I
--
--",
-
-
40
/
31
[V
30
25
1/
MT
--
..-
17
......
10
/
~
-
!/
15
/
10
Idling Adjustment.
Idling adjustment should be carried out with the
engine warm and running
by
first of
all
adjusting
the throttle stop screw (22, fig. 437) to a point 1JI!here
the engine does not falter and then adjusting the
volume control screw (33) to obtain the mixture
which gives the highest regular engine speed at
the selected degree of throttle restriction. Finally,
further narrow the throttle opening to the best idle
speed and control the rate of the mixture
with
the
screw (33).
1000
3000
4000
1000
6000
GIRl/MIN
Fig. 438 - Horsepower, consumption and torque curves of
100 GC.OOO engine.
Corrected horsepower curve shown in figure refers to a rebuilt
and run-In engine with fan, air cleaner and muffler.
CS
=
Consumption - CV
=
H.P. - MT
=
Torque - GIRl/MIN
=
r.p.m.
When bench testing a rebuilt engine, avoid
revving it up but comply with data tabulated on
page 70.
Fig. 439.
Power plant and differential unit.
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