BENTLEY 1930-1959
   
Mark VI (1946-50)
Engine
Bore & Stroke 89mm x 114mm
Displacement 4257cc
Firing order 1,4,2,6,3,5
Oil pressure (hot) 25 lb./sq. in.


Fuel Supply
Carburetor Twin SU H6
Needles LBI (with Bentley Air Cleaners);
8C (with AC Air Cleaners)


Valving
Intake tappet clearance 0.006" (cold)
Exhaust tappet clearance 0.012" (cold)
Valve-timing indication Flywheel (tappets at 0.030")
Intake valve opens 3½° ATDC


Ignition
Breaker gap 0.019" - 0.021"
Plug gap 0.025"
Ignition timing indication Flywheel
Ignition timing TDC (fully retarded)


Clutch
Clutch type Borg & Beck Single Dry Plate
Clutch linings Mintex


Brakes
Brake type Rolls-Royce Hydraulic (Mechanical Servo-assisted)
Brake linings Ferodo


Wheel Alignment
Toe-In 1⁄16" to 5⁄32"
Camber 0° - 1° out (no adjustment)
Caster angle +½° to -½°
King pin angle 4¼° (3¼° on early models)

Mark VI (1951-52)
Engine
Bore & Stroke 92mm x 114mm
Displacement 4566cc
Firing order 1,4,2,6,3,5
Oil pressure (hot) 25 lb./sq. in.


Fuel Supply
Carburetor Twin SU H6
Needles LBI (with Bentley Air Cleaners);
8C (with AC Air Cleaners)


Valving
Intake tappet clearance 0.006" (cold)
Exhaust tappet clearance 0.012" (cold)
Valve-timing indication Flywheel (tappets at 0.030")
Intake valve opens 3½° ATDC


Ignition
Breaker gap 0.019" - 0.021"
Plug gap 0.025"
Ignition timing indication Flywheel
Ignition timing TDC (fully retarded)


Clutch
Clutch type Borg & Beck Single Dry Plate
Clutch linings Mintex


Brakes
Brake type Rolls-Royce Hydraulic (Mechanical Servo-assisted)
Brake linings Ferodo


Wheel Alignment
Toe-In 1⁄16" to 5⁄32"
Camber 0° - 1° out (no adjustment)
Caster angle +½° to -½°
King pin angle 4¼° (3¼° on early models)

B Type and Continental (1952 onward)
Engine
Bore & Stroke 92mm x 114mm
Displacement 4566cc
Firing order 1,4,2,6,3,5
Oil pressure (hot) 20-25 lb./sq. in.


Fuel Supply
Carburetor Twin SU H6
Needles SH


Valving
Intake tappet clearance 0.006" (cold)
Exhaust tappet clearance 0.012" (cold)
Valve-timing indication Flywheel mark (tappets at 0.030" clearance)
Intake valve opens At TDC


Ignition
Breaker gap 0.020"
Plug gap 0.025"
Ignition timing indication Flywheel mark
Ignition timing At TDC (full retard)


Clutch
Clutch type Borg & Beck
Clutch linings Mintex


Brakes
Brake type Rolls-Royce Hydraulic (Mechanical Servo-assisted)
Brake linings Ferodo


Wheel Alignment
Toe-In 1⁄16" to 5⁄32"
Camber 0° - 1° out (no adjustment)
Caster angle +½° to -½°
King pin angle 4¼°


Series S2 (1960)
Engine
Bore & Stroke 104mm x 91.5mm
Displacement 6230cc
Firing order A1,B1,A4,B4,B2,A3,B3,A2
Oil pressure (hot) 37 lb./sq. in.


Fuel Supply
Carburetor Twin SU HD6
Choke 1¾"
Main 0.100"
Needles SH


Valving
Intake tappet clearance Hydraulic
Exhaust tappet clearance Hydraulic
Valve-timing indication Marks on timing gears
Intake valve opens 5° ATDC


Ignition
Breaker gap 0.019" - 0.021"
Plug gap 0.024" - 0.027"
Ignition timing indication Flywheel
Ignition timing 2°BTDC


Clutch
Clutch type Bentley Automatic transmission
Clutch linings -


Brakes
Brake type Bentley Hydraulic (Mechanical Servo-assisted)
Brake linings Ferodo or Mintex


Wheel Alignment
Toe-In 1⁄16" to 1⁄8"
Camber 0° - ½° out
Caster angle 0°
King pin angle 4½°


Series S and Continental (1956-59)
Engine
Bore & Stroke 95.3mm x 114.3mm
Displacement 4887cc
Firing order 1,4,2,6,3,5
Oil pressure (hot) 25 lb./sq. in.


Fuel Supply
Carburetor Twin SU HD8
Choke 2"
Main 0.125"
Needles UC


Valving
Intake tappet clearance 0.006" (cold)
Exhaust tappet clearance 0.012" (cold)
Valve-timing indication Flywheel
Intake valve opens TDC at 0.030" clearance


Ignition
Breaker gap 0.019" - 0.021"
Plug gap 0.025"
Ignition timing indication Flywheel
Ignition timing 2°BTDC


Clutch
Clutch type Bentley Automatic transmission
Clutch linings -


Brakes
Brake type Rolls-Royce Hydraulic (Mechanical Servo-assisted)
Brake linings Ferodo or Mintex


Wheel Alignment
Toe-In 1⁄16" to 5⁄32"
Camber 0° - ½° out (power assisted steering or manual steering)
Caster angle 1° neg. (Manual steering)
0° (power assisted steering)
King pin angle 4½° at 0° camber