Lotus TURBO ESPRIT Service Manual page 17

SECTION TD A
'
Piston (cont.)
Page
7 7
-Piston ring to groove clearance
907/912 Std
-
Compression0.038/0.089 mm (0.0015/0.0035 in)
-
O i l control 0.038/0.064 mm (0.001 5/O.OO25 in)
91 2
H
C
-
compression O.O4O/O. 072 mm (0.001 6/O. 0028 i n)
-
O i l control 0.020/0.052 mm (0.0008/0.0020 in)
Cyl
i
nder Liner
-
Type Wet, slip f i t
-
Material
-
907/912 Std
Cast Iron
-91 2 HC
Nikosil coated, forged aluminium alloy
-
Internal diameter
-
907/912 Std
Measured 50mm from top across thrust axis
Grade 'A'
95.275/95.288
mm
(3.751 0/3 .751 5 in)
Grade 'B'
95.288/95.308
mm
(3.7515/3.7520 in)
-
912 HC
Measured 70mm from top across thrust axis
..
a
Grade 'A'
95.255/95.269 nim (3.7502/3 .7507 i n)
Grade 'B'
95.267/95.281
mm
(3.7507/3.7512 in)
-
Fitted height above block
-
907/912 Std
0.1 O/O.l5
mm
(0.004/0.006 i n 1
('nip')
up
to engine number 12477
0.025/0.13 mrn (0.001/0.005 in)
O O I / Q ~ ~
from engine number 12478
-
912 HC
minus 0.025 to
+
0.050mm
(minus 0.001 to
+
0.002 in)
-
Permissable variation between linen 0.03
mm
(0.001 in)
J
-
Piston clearance in cylinder liner 907 0.?8[0.13mm (0.004/0.005 in)
912 Std 0.11/0.15mm (0.005/0.006 in)
912 HC 0.05/0.08mm (0.002/0.003 in)
Lubrication System
a
Oil
pressure under normal running condition (hot)
a).
Not below 5 Ib/sq .in. (0.35 kg
./sq
.cm .) at idle speed
b),
N 0 t b e l 0 ~ 3 5 I b / s ~ . i n . ( 2 . 5 k g . / s ~ . c m . ) a t 3 , 5 0 0 r p m
C)
;
Not below 45 Ib/sq .in. (3.2 kg
./sq
.cm
.)
at 6,500 rpm
Filter Full-flow, disposable canister
type with anti-flow back valve)
Pump
-
type Eccentric rotor
-
Drive Toothed belt
-
Rotor /annulus tip clearance
0.05
-
0.15 mm (0.002
-
0.006 in)
-
Annulus end float
0.03
-
0.08 mm (0.001
-
0.003 i n )
,-
a
-
Rotor end float
0.06
-
0.09 mm (0.0025
-
0.0035 in)
-
Annulus to housing clearance
0.18
-
0.30
mm
(0.007
-
0.012 in)
APR 1987
Dips tick tube standout from M. B
.
P
.