Lotus Elan 1970 - Cylinder Head

Cvlinder Heod
Moteriol
Gosket
Cylinder
heod
identificqtion
-
Srnoll
vo!ve
-
Big
volve
Cylinder
heod
dePth
-
Smoll
volve
-
Big
volve
Mox.
permissoblemetot
removol
-
Smoll
volve'
-
Big
volve
Volve
timing
-
Inlet
oPens
Inlet
closes
Exhoust
oPens
Exhoust
closes
Angle
of
volve
seols
ond
foces
Volves:
Heod
diometer
-
Inlet
(except
Sprint)
-
Inlet
(Sprint)
-
Exhoust
Stem
diometer
-
Inlet
-
Exhoust
Stem
cleoronce
in
guide
-
Inlei
-?
it
-
Exhoust
Cleoronce
(cold)
-
Inlet
-
Exhoust
(to
Engine
9951
)
-
Exhoust
(from
Engine
9952)
Volve
sprinqs:
ffi
TyPe
Free
Length
-
lnner
Outer
i
Rote
-
Inner
@
.92
in-
(23.4
mm.)
-
Inner
@
'Sa
in.
(1
4.7
mrm.)
-
Outer
@
t.t7 in.
(29.7
mm')
-
Outer
@
,,83
in .
(21
.I
mm
')
Volve
guides:
'
Internol
cjio.
(to
reom
cfter
fitting)
Aluminium
Copper/osbestos
'S'(&Fed.
Big
volve)
'N'
or
'H'
(
&S/E
Stromberg)
4.638/4.643
in .
(11
.78/11
-79
cm.)
4.s98/4.603
in.
(l
I
.68ll'l
.69
cm.)
.M5
in.
(1
.14
mm.)
.010
in.
(.254
mm.).
220
g.T.D.C.
)
A)
62- A.B
.D
.c.
j
sro,
620
B.B .D
.c.
)
220
A.T.D.c,)
450
1
.526/1.530
in .
(38.760/38.thz
mm.)
1
.560/1.566
in .
(39.624/9.776
mm.)
|
.321/1,325
in .
(33
.553/33
.555
mm.)
.310/.311
in.
(7
.874fr
'899
mm.)
.310/.311
in.
(7.874n-899
mm.)
.00
f
3/.0023
in
.
(.cA7/
.058
mm.)
.0025/
.0030
in.
(
.063/.076
mm
')
.oO5/
.OO7
in.
(.127/
.177
mn.)
"006/.008
in.
(.152/
.203
mm.)
.OW/
.01'l
in,
(
.228/
.279
mm.)
Duol
I
.130
in .
(28
.70
mm
.)
1.450
in.
(36.83
mm.)
12.4
lbs.
(5.6
kg.)
33.5
lbs.
(15.2 kg.)
45 lbs.
(20.a
ks.)
'109
lbs.
(ae.a ks
-)
'!
.31'13/.3123
in.
(7
.932
mm.)
260 B.T.D.C.)
660 A.B.D.c
l
660
B.B.D.C.)
260 A.T.D.c.)
Ei
\-
r-'
:::.
I
1074
Elon
lt.