Camshafts And Valve Timing; Valves; Valve Seat Inserts - Lotus TURBO ESPRIT Service Manual

SECTION TD A
CAMSHAFTS AND
VALVE
TIMING
cam
Type
Designation
Spec.No.
1 groove 1270" 10.350" (110' (red
I$II;-I
between
pulley
cam
hsg.
plain
1
272"
(
0 .34011
(
110"
1
red
plain
2 groove
plain
777..
. .
444....
E ; ~
1
; l e t M.O.P.
degrees ATDC*
Lift
*
All cams are symnetrical opening closing
VALVES
~ a r n
Pulley
Tirning
Dot
Angle of valve seats and faces
Head
diameter
-
lnlet
-
Exhaust
Stem diameter
-
lnlet
&
Exhaust
Stem clearance in guide
-
lnlet
&
exhaust
100"
1023"
1023"
104"
104"
Valve clearance (cold)
Spec. 1
.
(ID'
Cams)
-
lnlet
-
Exhaust
Spec 2,3,4,5,6,7,8,9
-
lnlet
1 b
-
Exhaust
blue
yellw
yellw
green
green
Page
5
l3xhi3ust
1
M.0.P Cam
BTDC*
Pulley
Timing
D o t
110" red
110°
red
110" red
1023" yellow
110" red
45O
35.47
-
35.65
mrn
(1 .396
-
1 .404 in .)
30.73 -30.91
rnm
(1 .210
-
1 .217
i n . )
7.125
-
7.137
mm
(0,2805
-
0.2810
i n .
0.008
-
0.046
mm
(0.0003
-
0.0018
in.
0.10
-
0 . 1 5
mm
(0.004
-
0.006
in.)
0.20
-
0.25
mm
(0.008
-
0.010
in.)
0 . 1 3
-
0.18
mm
(0.005
-
0.007
in.)
0 . 2 5
-
0 . 3 1
mm
(0.010
-
0.012
in.)
Valve Seat lrserts
Bare
in head:
S
ta nda rd
-
Inlet
-
Exhaust
37.235/37.260
mm
.
( 1
. & / I
.467
in.
)
34.290/34.315
mm.
( 1 . 3 5 0 / 1 . 3 5 1
in.)