GENERAL DATA
(SERIES"
TO
")
ENGINE
TYPE
First
overs
ize
bore
Second oversize
bore
Radiator hose bottom
Gudgeon
pin
diameter
Centre
main
bearing-end
clearance
Marn
bearings-diametrical
clearance '"
Crankshaft-end
thrust
taken
on
Number
of camshaft bearings
Type
of
camshaft bearings
XPAG/TD
up
to
Engine No. 9407.
XPAGfTDf2
from
Engine No. 9408.
Four.
1250
c,c, (761 cu. ln.).
54·4
at
5,200 r.p.m.
66
'·5
mm. (2,618 in.).
9Q
mm.
(3,543
ln.).
10·97 h.p,
7·25
to
J.
Thermo-slphcn-e-pump and fan assisted.
Length
4 in.
(10,16
cm.),
Diameter
2-&
in. (5·56 cm.),
Length
21
in. (5'71 cm.),
Diameter
Ii In. (2·86 crn.).
+·020
In. (,50 rnm.).
Actual
bore
2·6381
in. (67 rnrn.].
+·040
in. (1,00
rnrn.),
Actual
bore
2·6581
in. (67,5 mm.).
1-3-4-2.
·0021
In.
to
·0029 in. (,056 mm.
to
·071 rnm.].
·006 in. to ·0
10
in. (,152 mm. to ·254 mrn.),
Two.
2·25 mm.
(·0885
ln.).
One.
4·0 mm. (·1575
rn
.).
50
to
70 lb.
per
sq. in. ,(3·5
to
5·0 kg./cm.
2
) .
40
to
45 lb.
per
sq. in. (2·8
to
3·2 kg./cm.
2
) .
Clamped.
. [+·0004 in.
·7087
Ill
. +.0006 in.
18
[+
'010 mm.
mm. -1,015 mm.
Fit in piston
Double
thumb
press.
Fit in connecting
rod
Clamped.
Crankpin
diameter
(standard)
l·n2
in. (45 rnrn.].
Crankpin
minimum
diameter
for
regrind
1·722 in. (43,75 mm.),
ConnectIng
rod-length
between
centres
7·008 in. (178 mm.).
Connecting
rod-type
of
bearing Shimless, steel-backed, white-metal-lined.
Connecting
rod-side
clearance
...
·004 in.
to
·006 in. (·10 mm.
to
·ISmm.).
Connecting
rod-diametrical
clearance ... ·0005
in.to
·002 in. ('011 mm.
to
·056 mm.).
Number
of crankshaft
bear
ings ...
Three.
Type
of
main bearings Shlrnless, steel-backed.
whlte
-rnetal-llned.
Standard
main journal
diameter
.. , 2·047 in. (52
rnm
.),
Main journals first
regrind
diameter
2·027 in. (51-49 rnm.),
Main journals second
regrind
diameter
(minimum) 2·007 in. (50·98 mm.).
Main -bearings- len
gt
h
Front
1-496
in. (38 mm.).
Centre
1-496
in. (38
rnm.},
Rear 1·575 in. (40 mm.],
·0014 in.
to
·0037 in. (·035 mm.
to
,095 mrn.).
·0008 in.
to
·003 in. (·020 mm.
to
·075 rnm.).
Centre
bearing.
Three
.
White
metal (front).
Zinc alloy
(rear
and
centre).
Firing
order
Piston clearance
at
pressure face
below
011
rlng ...
Ring gap
Number
of compression rings
Width
of compression rings
Number
of
oil rings
Width
of oil ring .. ,
all
pressure
relief valve
operates
Oil
pressure
(normal)
Gudgeon
pin
type
.. ,
Number
of
cylinders
Capacity
B.H.P.
Bore
...
Stroke
R.A,c; rating
Compression
ratio
...
System
of
cooling
Radiator hose
top
...
4
M.G. Midget. Issue 3 (H & E)
82966-1
1'54
Wishvilles Classic
Automobile Library
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