ARMSTRONG SIDDELEY 1930-1959
   
CA-14 HP (1937)
Engine
Bore & Stroke 60.96mm x 95.25mm
Displacement 1666cc
Firing order 1,5,3,6,2,4
Oil pressure (hot) 30 - 35 lb./sq. in.


Fuel Supply
Carburetor Claudel Hobson H30
Choke 23mm
Main 170
Power 40
Slow running 50


Valving
Intake tappet clearance 0.004" (cold)
Exhaust tappet clearance 0.008" (cold)
Valve-timing indication Camshaft and crankshaft sprockets
Intake valve opens 5° BTDC (Tappets at 0.0125")


Ignition
Breaker gap 0.015"
Plug gap 0.018"
Ignition timing indication Flywheel
Ignition timing ½" ATDC (flywheel rim)


Clutch
Clutch type ASM Centrifugal, Single Dry Plate Newton Disc


Brakes
Brake type Bendix (Equi-action)
Brake linings 10"d. x 1½" x 3⁄16"


Wheel Alignment
Toe-In 1⁄8"
Camber 2.5°
Caster angle 7.5°
King pin angle 7.5°


14 HP DA, EA, FA (1937-39)
Engine
Bore & Stroke 60.96mm x 95.25mm
Displacement 1666cc
Firing order 1,5,3,6,2,4
Oil pressure (hot) 30 - 35 lb./sq. in.


Fuel Supply
Carburetor Zenith VIG-2
Choke 24mm
Main 90
Compensating 70
Slow running 50


Valving
Intake tappet clearance 0.004" (cold)
Exhaust tappet clearance 0.008" (cold)
Valve-timing indication Camshaft and crankshaft sprockets
Intake valve opens 5° BTDC (Tappets at 0.0125")


Ignition
Breaker gap 0.015"
Plug gap 0.018"
Ignition timing indication Flywheel
Ignition timing ½" ATDC (flywheel rim)


Clutch
Clutch type ASM Centrifugal, Single dry plate
Clutch linings Newton Disc


Brakes
Brake type Bendix (Equi-action)
Brake linings 10"d. x 1½" x 3⁄16"


Wheel Alignment
Toe-In 1⁄8"
Camber 2.5°
Caster angle 7.5°
King pin angle 7.5°


16-HP ZA, ZB, ZC, ZD (1938-39)
Engine
Bore & Stroke 65mm x 100mm
Displacement 1991cc
Firing order 1,5,3,6,2,4
Oil pressure (hot) 30 - 35 lb./sq. in.


Fuel Supply
Carburetor Zenith 36 VEI-2
Choke 26
Main 120
Compensating 90
Economy 130
Slow running 60
Progression 140
Needle seating 2.5


Valving
Intake tappet clearance 0.006" (cold)
Exhaust tappet clearance 0.008" (cold)
Valve-timing indication Camshaft and crankshaft sprockets
Intake valve opens 5° BTDC (Tappets at 0.0125")


Ignition
Breaker gap 0.012"
Plug gap 0.020"
Ignition timing indication Flywheel
Ignition timing ½" ATDC (flywheel rim)


Clutch
Clutch type ASM Centrifugal, Single dry plate
Clutch linings Newton Disc


Brakes
Brake type Girling Mechanical
Brake linings 11"d. x 1½" x 3⁄16"


Wheel Alignment
Toe-In 1⁄8"
Camber 2.5°
Caster angle 3.5°
King pin angle 7.5°


16-HP ZG to ZO (1945-49)
Engine
Bore & Stroke 65mm x 100mm
Displacement 1991cc
Firing order 1,5,3,6,2,4
Oil pressure (hot) 40 lb./sq. in.


Fuel Supply
Carburetor Stromberg 36 DBVA or DAV
Choke 11⁄32"
Main 0.049"
Main D.J.EX 943
Hi-Speed bleed 68
Idle tube 68-75


Valving
Intake tappet clearance Hydraulic tappets
Exhaust tappet clearance Hydraulic tappets
Valve-timing indication Camshaft and crankshaft sprockets
Intake valve opens 10° BTDC


Ignition
Breaker gap 0.012"
Plug gap 0.018"
Ignition timing indication Flywheel
Ignition timing 10° BTDC


Clutch
Clutch type ASM Centrifugal, Single dry plate
Synchromesh model: Borg & Beck 8A6G
Single dry plate
Clutch linings 8½" x 5½" x 5⁄32"


Brakes
Brake type Girling
Brake linings 12"d. x 1.656" x 3⁄16"


Wheel Alignment
Toe-In 3⁄16"
Camber 2.5°
Caster angle 1°
King pin angle 7.5°


17-HP D, KA, LA, P (1937-39)
Engine
Bore & Stroke 66.67mm x 114.3mm
Displacement 2394.5cc
Firing order 1,5,3,6,2,4
Oil pressure (hot) 25 lb./sq. in.


Fuel Supply
Carburetor Zenith 36 VEI-2
Choke 26mm
Main 120
Compensating 80
Economy 135
Slow running 65


Valving
Intake tappet clearance 0.004"
Exhaust tappet clearance 0.012"
Valve-timing indication Camshaft and crankshaft sprockets
Intake valve opens 5° BTDC (Tappets at 0.0125")


Ignition
Breaker gap 0.015"
Plug gap 0.018"
Ignition timing indication Flywheel and bell housing
Ignition timing TDC


Clutch
Clutch type ASM Centrifugal, Single dry plate
Clutch linings Newton Disc


Brakes
Brake type Bendix (Cable-operated)
Brake linings 11"d. x 1½" x 3⁄16"


Wheel Alignment
Toe-In 1⁄16"
Camber 2°
Caster angle 3°11' (Series P = 3°)
King pin angle 5°


18-HP (1950-52)
Engine
Bore & Stroke 70mm x 100mm
Displacement 2309cc
Firing order 1,5,3,6,2,4
Oil pressure (hot) 40 lb./sq. in.


Fuel Supply
Carburetor Stromberg 36 DAA or DBA
Choke 1⁄32
Main 0.053" (with vacuum advance: 0.052")
Main Dis. L 1840
Hi-speed bleed 68
Idler 68-75


Valving
Intake tappet clearance Hydraulic tappets
(chassis 1812501~ =
solid tappets clear (hot)0.006")
Exhaust tappet clearance Hydraulic tappets
(chassis 1812501~ =
solid tappets clear (hot)0.006")
Valve-timing indication Camshaft and crankshaft sprockets
Intake valve opens 10° BTDC
(chassis 1812501~ =
inlet opens 4° BTDC; clear (cold)0.006")


Ignition
Breaker gap 0.012"
Plug gap 0.018" (vacuum advance=0.025")
Ignition timing indication -
Ignition timing 10° BTDC


Clutch
Clutch type ASM Centrifugal, Single dry plate
(Synchromesh: Borg & Beck 9A6G Single Dry Plate)
Clutch linings Newton Disc


Brakes
Brake type Girling (Lim.: Lockheed)
Brake linings 12"d. x 1.656" x 3⁄16"


Wheel Alignment
Toe-In 1⁄16"
Camber 2.5°
Caster angle 1°
King pin angle 7.5°


Short 20/25 HP, Series AA, BA, CA, DA, EA;
Long 20/25 HP Series S, T, U;
& 1st 15 cars in. V.rich KWR (1938-39)
Engine
Bore & Stroke 82.55mm x 114.3mm
Displacement 3670.5cc
Firing order 1,5,3,6,2,4
Oil pressure (hot) 25 lb./sq. in.


Fuel Supply
Carburetor Zenith 42 VEI (Series AA, BA, CA);
1st 98 cars in EDA, S, T, U;
1st 15 cars in VSU Type HV5HL;
std needle RJD, weak RK, rich KWR
Choke 32mm
Main 175
Compensating 100
Economy 185
Slow running 65


Valving
Intake tappet clearance 0.006" (cold)
Exhaust tappet clearance 0.012" (cold)
Valve-timing indication Camshaft and crankshaft sprockets
Intake valve opens 5° BTDC (Tappets at 0.0125")


Ignition
Breaker gap 0.015"
Plug gap 0.018"
Ignition timing indication Flywheel and bell housing casing
Ignition timing TDC


Clutch
Clutch type ASM Centrifugal, Single dry plate
(Series AA & S: Roper & Wreaks S.D.P)
Clutch linings Newton Disc


Brakes
Brake type Bendix (Cable-operated)
Brake linings 12"d. x 23⁄8" x 3⁄16"
(14": S,T,U & 1st 15 in V)


Wheel Alignment
Toe-In 3⁄16"
Camber 2°
Caster angle 6°30'
(Series AA,BA,CA: 4°40")
(Series S,T,U, & 1st 15 in V: 3°30')
King pin angle 5°


Long 20/25 HP, Series W, X, V (except 1st 15 cars) (1938-39)
Engine
Bore & Stroke 82.55mm x 114.3mm
Displacement 3670.5cc
Firing order 1,5,3,6,2,4
Oil pressure (hot) 25 lb./sq. in.


Fuel Supply
Carburetor Zenith 42 VEI
Choke 32mm
Main 175
Compensating 100
Economy 185
Slow running 65


Valving
Intake tappet clearance 0.006" (cold)
Exhaust tappet clearance 0.012" (cold)
Valve-timing indication Camshaft and crankshaft sprocket boss
Intake valve opens 5° BTDC (Tappets at 0.0125")


Ignition
Breaker gap 0.015"
Plug gap 0.018"
Ignition timing indication Flywheel and bell housing casing
Ignition timing TDC


Clutch
Clutch type ASM Centrifugal, Single dry plate
Clutch linings Newton Disc


Brakes
Brake type Bendix (Cable-operated)
Brake linings 14"d. x 2" x 3⁄16"
(14": S,T,U & 1st 15 in V)


Wheel Alignment
Toe-In 3⁄16"
Camber 2°
Caster angle 3°30'
King pin angle 5°


234 (1956-58)
Engine
Bore & Stroke 90mm x 90mm
Displacement 2290cc
Firing order 1,3,4,2
Oil pressure (hot) 40 lb./sq. in.


Fuel Supply
Carburetor Twin SU HD6
Needle KT Needle


Valving
Intake tappet clearance 0.006" (hot)
Exhaust tappet clearance 0.006"(hot)
Valve-timing indication On timing chain wheels
Intake valve opens 13° BTDC at 0.015" timing clearance


Ignition
Breaker gap 0.014" - 0.016"
Plug gap 0.025"
Ignition timing indication TDC notch on crankshaft pulley
Ignition timing 3.5°BTDC


Clutch
Clutch type Borg & Beck 9A6G
Clutch linings -


Brakes
Brake type Girling Vac-Hydro
Brake linings -


Wheel Alignment
Toe-In 1⁄16"
Camber 1° to 1.5° laden
Caster angle 1¾° to 2¼° laden
King pin angle 6.5°


236 (1955-58)
Engine
Bore & Stroke 70mm x 100mm
Displacement 2309cc
Firing order 1,5,3,6,2,4
Oil pressure (hot) 40 lb./sq. in.


Fuel Supply
Carburetor Stromberg DI 36
Choke 13⁄16
Main 0.056


Valving
Intake tappet clearance 0.006" (hot)
Exhaust tappet clearance 0.006"(hot)
Valve-timing indication Chain wheels
Intake valve opens 5° BTDC at 0.015" timing clearance


Ignition
Breaker gap 0.014" - 0.016"
Plug gap 0.025"
Ignition timing indication TDC mark on starter ring
Ignition timing 10°BTDC


Clutch
Clutch type Borg & Beck Manumatic 9MN/3
Clutch linings -


Brakes
Brake type Girling Vac-Hydro
Brake linings -


Wheel Alignment
Toe-In 1⁄16"
Camber 1° to 1.5° laden
Caster angle 1¾° to 2¼° laden
King pin angle 6.5°


Sapphire 346 (1952-58)
Engine
Bore & Stroke 90mm x 90mm
Displacement 3435.3cc
Firing order 1,5,3,6,2,4
Oil pressure (hot) 40 lb./sq. in.


Fuel Supply
Carburetor Stromberg DI 36
Choke Venturi 13⁄16"
Metering 0.060"
Note: Twin carbs, setting as single except as single except metering jet, 0.058"
When oil bath air cleaner is fitted to single-carb, cars, metering jet is 0.057"
Main Dis. Jet L 2111
Idle Dis. Top 0.060
Idle Dis. Bottom 0.068
High-speed bleed 0.068
Idle tube bottom 0.068
Idle tube top 0.075
Pump Dis. Jet 0.070


Valving
Intake tappet clearance 0.006" (hot)
Exhaust tappet clearance 0.006"(hot)
Valve-timing indication Camshaft and crankshaft chain sprockets
Intake valve opens 8° BTDC Rockers at 0.016" (cold)


Ignition
Breaker gap 0.014" - 0.016"
Plug gap 0.028" - 0.033"
Ignition timing indication Marks on flywheel and fan pulley
Ignition timing 5°BTDC


Clutch
Clutch type Single Dry Plate
(Automatic gearbox, fluid coupling)
Clutch linings -


Brakes
Brake type Girling hydraulic
(With Vac-Hydro unit after chassis 343751)
Brake linings 2LS (front)


Wheel Alignment
Toe-In 3⁄16"
Camber 2° straight ahead
Caster angle Laden 1° straight ahead
King pin angle 5.5° straight ahead

Sapphire 346 Limousine (1959)
Engine
Bore & Stroke 90mm x 90mm
Displacement 3435.3cc
Firing order 1,5,3,6,2,4
Oil pressure (hot) 40 lb./sq. in.


Fuel Supply
Carburetor Stromberg DAV 36
Choke 13⁄16"
Main 0.060"
By-Pass 0.054"
Main Discharge L2111
High-speed bleed 0.068"
Pump 0.070"


Valving
Intake tappet clearance 0.006" (hot)
Exhaust tappet clearance 0.006"(hot)
Valve-timing indication Timing wheels
Intake valve opens 8° BTDC at 0.014" - 0.016" clearance


Ignition
Breaker gap 0.014" - 0.016"
Plug gap 0.028" - 0.033"
Ignition timing indication Insert rod in plug hole
Ignition timing 5°BTDC


Clutch
Clutch type Borg & Beck 10AGG
Clutch linings Spring Borglite


Brakes
Brake type Girling hydraulic
Brake linings Ferodo DM8 (front); MSI (rear)


Wheel Alignment
Toe-In 3⁄16"
Camber 2° unladen
Caster angle ½° ± ¼° unladen
King pin angle 5.5° unladen

Star Sapphire (1959)
Engine
Bore & Stroke 97mm x 90mm
Displacement 3990cc
Firing order 1,5,3,6,2,4
Oil pressure (hot) 60 lb./sq. in.


Fuel Supply
Carburetor Twin Stromberg DIV 42 (alt. Zenith 42WIA)
Choke 1¼" (alt. Zenith=32mm)
Main 0.065" (alt. Zenith=157)
By-Pass 0.060" (alt. Zenith=120)
Main Discharge L1808 (alt. Zenith=N/A)
High-speed bleed 0.065" (alt. Zenith=N/A)
Pump 0.070" (alt. Zenith=N/A)


Valving
Intake tappet clearance 0.008" (hot)
Exhaust tappet clearance 0.008"(hot)
Valve-timing indication Timing wheels
Intake valve opens 8° BTDC at 0.008" clearance


Ignition
Breaker gap 0.015"
Plug gap 0.028"
Ignition timing indication Peg and hole in flywheel
Ignition timing 3°BTDC


Clutch
Clutch type Hydraulic torque converter
Clutch linings -


Brakes
Brake type Girling disc (front), drum (rear) with Vac-hydro
Brake linings Ferodo DS5 (front); MSI (rear)


Wheel Alignment
Toe-In 0" to 1⁄16"
Camber 1° ± ¼° unladen
Caster angle ½° ± ¼° unladen
King pin angle 5.5° unladen