Rolls-Royce Silver Cloud - Page 7

Rolls-Royce
Silver
Cloud,
Silver Cloud ll and
Phontom
V
d
Bentley
Sl,
Bentley
52 ond Bentley Continentol
52
Workshop
Monuol
CHAPTER A
GENERAL
INFORMATION
SECTION
AI
SPECIFICATION
_
SI
CARS
Engine
Type
Six cylinders, in line, with overhead
inlet
and side exhaust
valves.
Bore
3.750
in.
(95.3
mm.)
Stroke
4'500
in.
(114'3
mm.)
Cubic capacity
(piston
displacement) 298 cu. in.
(4887
c.c.)
Compression
ratio
Standard
Sl and
Long Wheelbase Sl cars 6'6 : I
(early)
8.0:
I
(late)
Bentley Continental Sl
cars
7'25:
|
(early)
8'00:
1
(late)
Suspension ofthe
engine and
gearbox
The
engine
and
gearbox
are
of unit
construction. The
unit
is
flexibly mounted
on rubber at three
points.
Cylinder
Block
Type
Monobloc
casting,
integral
with
crankcase.
Material
Cast iron with full
length,
high
phosphorus
iron
cylinder liners.
Phosphor-bronze
exhaust
valve
guides.
Cylinder
Head
Type
Detachable, 6-port
type
Material
Aluminium alloy, with nickel chrome
steel
inlet valve
seat inserts
F
and cast iron
inlet valve
guides.
A
Crankshaft
F
Material
Nitride hardened chrome
Molybdenum steel. Dynamically
balanced.
Number
of
Journals
Seven
Balance weights
Integral with shaft
Crankshaft
vibration damper
Internal. Combined spring-drive
and
friction-type damper.
A1