1930 8 litre – gk 706

The 8 Litre is considered W.O. Bentley’s masterpiece; yet it also marked the end of a chapter for the first Bentley Motors. GK 706 was W.O’s personal ‘company car’, in which he enjoyed many fast, non-stop runs down to the South of France with his wife. He was reunited with it on his 80th birthday at a Bentley Drivers’ Club reunion. 

The 8 Litre

Bentley’s clientele included those looking for the ultimate in luxury and effortless power. The 8 Litre, launched in 1930, was W.O. Bentley’s flagship. Its 7,938cc capacity was achieved by extending the stroke of the 6½ Litre’s straight six engine and the crankcase was made of Elektron, a magnesium alloy, to save weight. Instead of the traditional race-bred mesh stoneguard, the 8 Litre’s radiator was tall, with vertical chromed vanes. Long wheelbases accommodated the formal coachwork clients wanted.

At the time of the 8 Litre’s launch, W.O. remarked, “I have always wanted to produce a dead silent 100mph car, and now I think that we have done it.” The company guaranteed that the 8 Litre would be capable of 100mph regardless of the chosen coachwork. When Autocar tested WO’s own HJ Mulliner saloon GK 706 it pronounced, “Motoring in its Very Highest Form… on performance alone it stands right in the forefront as an equal, at least, of any other car in existence.” Despite its performance, refinement and advanced technology, the 8 Litre’s launch coincided with the worldwide depression caused by the Wall Street Crash of 1929; unfortunate timing for a luxury flagship. At the time Bentley Motors was also in financial difficulty, leading to a change of ownership. Only 100 examples of the 8 Litre were built between 1930 and 1932. 

GK 706

W.O. Bentley’s personal 8 Litre was mounted on a 12’ wheelbase chassis with a Weymann fabric body, which gave him ‘my most memorable driving of all time’. After the liquidation of the original Bentley Motors, dealer Jack Barclay sold the car to L.W. Weldon in 1932, who kept it for a year before selling it to Eric Mackintosh in 1933. It changed hands four more times before being acquired by Bentley Motors in 2006 and sympathetically restored, preserving much of the original patina. It has since become a symbolic ‘company car’ for Bentley CEOs.

Date Produced1930
Number Built100
BodyWeymann style saloon by H.J. Mulliner; 4-door, 5-seat; weight 48 cwt (2,438.4 kg)
Engine4-valves, double springs; 8-bearing crankshaft, cast iron block and head integral, stainless steel jacket plates; Elektron crankcase and sump
Power200 bhp (149.1 kW) or 225 bhp (167.8 kW) @ 3,500 rpm, depending on compression ratio
TransmissionSingle dry plate clutch; 4–speed gearbox; final drive hypoid bevel 3.533, 3.3, or 4.07:1
ChassisPressed steel frame; semi-elliptic leaf springs; Bentley and Draper dampers, friction front, hydraulic lever arm rear; worm and sector steering
DimensionsWheelbase 144 in (365 cm), track 56 in (142 cm); length 201 in (511 cm); width 68 in (174 cm); height 71 in (182 cm)
PerformanceMaximum speed 101 mph (162 km/h)



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