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COUPE
273
PM.S.
'-~
I
.
I
~,,-,,"'--o.:.~c--' I
11/1 Z
I
0
,,;,,1
/
.ISPIRAZIOHE
1
EXHAUST
INTAKE
.
,
·
,
,
·
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•
•
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~<Nj
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7'
•
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I-------.-
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• • •
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1
1
It;'
,
16
1
J
,
16,1
1
J
1
H
In
Fig. 428 - Diameters of intake and exhaust valve seats in head.
20 = 1.024" - 26,2 = 1.031" - 30
=
1.181"
+
23 = .905" - 23,2 = .!::13"-
21,5 = 1.083".
VALVE GEAR
Intake:
opens,
B.T.D.C.
eloses,
A.B.D.C.
25
0
51
0
P.M.!.
Fig. 429 - Valve timing diagram at increased tappet clearance
of
.0148" (0.375
mm).
loizia sea rico
=
EJilhaust opens
Fine aspirazione
=
Intake closes
Fine scarico
=
Exhaust closes
P.M.$.
=
T.D.C.
Inizia aspirazione
=
Intake opens
P.M.!.
=
B.D.C.
NOTE .
Rocker shaft stud nuts must be drawn
up with 36.2 It.lb. (5 kgm) of torque.
Exhaust:
- opens,
B.B.D.C
.
- closes, A.T.D.C
.
Tappet clearance for timing check
Tappet clearance, cold:
intake .
- exhaust
Fig. 430.
Power plant and differ-
ential unit.
. . . . .
64°
. . . . .
12°
.0148" (0.375
mm)
.OOS" (0.15
mm)
.OOS" (0.20
mm)
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