Sunbeam ALPINE I SERIES: APLINE II SERIES, Workshop Manual

Page: 46 / 413

6th
re-issue
Page8
WSM, 124
Section B (Engine)
ENGINE
ENGINE (See Figs. I to 4)
Details and differences
Full particulars are given In the Data Section of the
engine power output, compression ratio, com­
pression pressure, valve rocker clearance, torque
spanner settings, ignition timing and all other
necessary settings and dimensions.
Some parts of the engine are Interchangeable with
other engines made by the Rootes Group. Other
parts may look rather similar but are quite different
and It Is most Important to ensure that the correct
part is titted. Reference should always be made to
the appropriate parts list when ordering replace­
ments.
These engines have an aluminium head with
shrunk-In valve seat inserts. The valves are inclined
at an angle of 4½ 0 from the vertical.
A crankshaft damper consisting of a heavy metal
ring suitably rubber bonded to the crankshaft
pulley is used. This must never be replaced by
another type of pulley.
1592c.c. engine differences from 1494c.c. engine
These are as follows and are given dimensionally in
the Data Sectton.
I. Cylinder bore and piston size increased.
2. Crankshaft big end journal diameters Increased.
3. Big and little end bearing bore diameters
increased.
4. Gudgeon pin bore offset in piston towards the
maximum thrust side.
5. New water pump to give increased water flow.
For details of water pump See Section A.
6. Oil pump rotors and body lengthened to
Increase oil pump output.
1592 cc engine changes
From chassis number
B3062665
and
B9117425
Lighter flywheels and larger Inlet valves are used
with suitably enlarged inlet ports and seat inserts.
From chassis number
B3062757
and
B9117862
Inlet and exhaust valve stems are chrome plated.
Engines fitted to GT cars
These engines have cast Iron exhaust manifolds.
From
chassis
number
B.3053209, B.9106448 HC,
B.9107189 LC
and
B.9106535 ME.*
A non return ball valve was titted In the timing
chain oil feed pipe union, to ensure rapid building
up of oil pressure when starting.
From chassis
B.30Sn7o HC, B.3057825 LC, B.9110982
HC
and
B.9111021 HC-ME.*
•Micro element air cleaner.
Rubber rubbing block titted on timing chain
tensioning blade.
On Alpine Serles IV onwards
Improved type piston with closer running �learance
and twin outlet cast iron exhaust manifold titted.
ENGINE-To remove
The engine is removed with the gearbox attached
using a lifting sling that will allow the gearbox
end to be lowered while r�islng the engine end.
Engine removal-Underneath work
Drain sump and gearbox. Remove propeller shaft.
Disconnect exhaust at' iy• junction
(Alpine)
or at
exhaust manifold flange
(Rapier).
Unbolt clutch operating cylinder. Do not dis­
connect fluid pipe. Disconnect speedometer cable.
If necessary disconnect overdrive solenoid wire.
Remove rear mounting crossmember after taking
engine weight.
Work inside car
Remove carpets, gearbox cover and gear lever
taking care not to lose peg in the gear lever ball.
If titted, disconnect overdrive operating switch on
top of gearbox.
Work under bonnet
Remove bonnet, drain and remove radiator.
Offs/de-Disconnect thermometer lead at element
terminal, fuel pipe at fuel pump intake union,
tachometer drive cable at drive below distributor
if titted, oil pressure pipe connection, and L.T. feed
wire at coil S.W. terminal.
Nears/de-Disconnect heater water feed pipes at
cylinder and water pump connections, dynamo and
starter leads, throttle control, and choke control.
Remove outer exhaust manifold and scuttle bracing
tube
(Alpine only).
Unbolt oil tiller from rocker cover.
Disconnect engine front mountings and lift out
engine unit.
Engine-To refit
Refitting is a reversal of the removal procedure.
The engine and gearbox should be tilled with the
correct grade of oil.
;
J