Bentley Mk VI — Leading Particulars of Chassis
From the Handbook for Bentley 4¼ Litre Mk. VI.
Engine
| Configuration |
Six cylinders, inline |
| Bore |
3½” (89 mm) |
| Stroke |
4½” (114 mm) |
| Cubic Capacity |
4,257 c.c. |
| Construction |
Mono-bloc casting, detachable cylinder head |
| Valve Layout |
Overhead inlet valves, side exhaust valves |
| Pistons |
Patented aluminium alloy |
Engine Lubrication
| Type |
Pressure feed to all crankshaft and connecting rod bearings |
| Valve Rocker Lubrication |
Positive low-pressure supply via pressure relief valve |
| Sump Capacity |
Two gallons |
Carburetter
| Type |
Two special type S.U. |
| Air Intake |
Silencer with incorporated air cleaner element |
Fuel System
| Tank Capacity |
Eighteen gallons |
| Tank Location |
Rear of chassis |
| Supply |
Electric pumps |
| Instruments |
Fuel level gauge and warning light on instrument board |
Cooling System
| Type |
Centrifugal pump circulation and fan |
| Control |
Thermostatically controlled |
| Instruments |
Coolant temperature thermometer on instrument board |
Electrical Equipment
| System |
Twelve-volt |
| Dynamo Regulation |
Automatic regulation by vibrator control |
| Starter Motor |
Separate, with reduction gear and pinion for gentle engagement |
| Battery |
55 ampere-hour capacity approximately |
Gearbox
| Speeds |
Four forward and reverse |
| Synchromesh |
On second, third and fourth speeds |
| Control |
Right-hand control lever |
Gear Ratios (Rear Axle Ratio 3.73:1)
| 1st Speed |
11.11:1 |
| 2nd Speed |
7.52:1 |
| 3rd Speed |
5.0:1 |
| 4th Speed (Direct) |
3.73:1 |
| Reverse |
11.76:1 |
Propeller Shaft
| Type |
Large diameter, open |
| Joints |
Grease-retaining needle-bearing universal joints |
Rear Axle
| Type |
Semi-floating |
| Gears |
Hypoid gears with differential |
| Reactions |
Torque and brake reactions taken by road springs |
Suspension
| Front |
Independent, open helical springs with hydraulic shock dampers |
| Rear |
Long semi-elliptic springs in leather gaiters, lubricated from centralised chassis system, controllable hydraulic shock dampers |
| Shock Dampers |
Bentley design, rear damper damping adjustable by hand control on steering wheel |
Steering
Brakes
| Type |
Internal expanding on all four wheels |
| Front Operation |
Hydraulic |
| Rear Operation |
Mechanical |
| Servo |
Mechanical servo, effective for both forward and reverse |
| Hand Brake |
Operates on rear wheels |
Chassis Lubrication
| Type |
Centralised chassis lubrication system |
| Supply |
Foot-operated pump and reservoir on dashboard |
Road Wheels & Tyres
| Wheels |
Detachable steel wheels |
| Tyres |
6.50 x 16 India Super Silent Rayon |
Dimensions
| Total Length (incl. bumpers) |
15′ 11½” |
| Width |
5′ 9″ |
| Wheelbase |
10′ 0″ |
| Track — Front |
4′ 8½” |
| Track — Rear |
4′ 10½” |
| Turning Circle (outside edge of tyre) |
41′ 2″ |
