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1928 Bentley 6 ½-Litre

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W.O. Bentley unveiled the new 3-litre car bearing his name on Stand 126 at the 1919 Olympia Motor Exhibition. Amazingly, the prototype engine had only fired up for the first time just a few weeks earlier. Bentley's four-cylinder 'fixed head' engine incorporated a single overhead camshaft, four-valves per cylinder and a bore/stroke of 80x149mm. Twin ML magnetos provided the ignition and power was transmitted via a four-speed gearbox with right-hand change. The pressed-steel chassis started off with a wheelbase of 9-feet and 9.5 inches. In 1923, they adopted a dimension of 10-feet and 10-inchs as the 'Standard Long.' The shorter frame was used for the TT Replica and subsequent Speed Model. Rear wheel brakes only were employed up to 1924 when four-wheel Perrot-type brakes were introduced.

The team enjoyed success in the 1922 Isle of Man Tourist Trophy, when Bentleys finished second, fourth, and fifth to take the Team Prize. This led to the introduction of the TT Replica - later known as the Speed Model - on the 9-foot, 9.5-inch wheelbase, short standard chassis.

By the mid-1920s, the 3-Liter was becoming less competitive and its performance was crippled when ladened with heavy coachwork. More was needed. In 1926, Bentley introduced the 6½-Litre, known as the 'Silent Six'.

The Silent Six had been conceived as a touring car to compete with Rolls-Royce's New Phantom. The competition form was known as the Speed Six, and in this guise Barnato/Birkin's Speed Six won the 1929 Le Mans 24 Hour Race ahead of a trio of 4½-Litre Bentleys, and Barnato/Kidston repeated the feat in the following year's Grand Prix d'Endurance at the Sarthe circuit ahead of similarly-mounted Clement/Watney.

Production of the 6.5-Litre Bentley lasted four years, during which time 544 chassis were completed, 182 of these were built to Speed Six specification.

Of the 544 cars built, just 10-percent were delivered with open touring bodies.


by Daniel Vaughan | Nov 2019

Related Reading : Bentley 6½ Litre History

The Bentley 6.5 Litre was a continuation of the Litre series Walter Owen Bentley had created. The four-cylinder 4.5-liter unit used in the 4½ Litre was used for the 6½ Litre Bentley but the 6½ Litre Bentley had two extra cylinders. The Bentley stright-6 had a cast-iron block and head with an overhead camshaft having four-valves per cylinder. There were two spark-plugs per cylinder. The 100 mm bore....
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Related Reading : Bentley 6½ Litre History

The Bentley Company was created by Walter Owen and Henry Bentley in 1919. Within a few years they had their first 24 Hours of LeMans victory. The company prospered for a number of years before going into receivership in 1931. The company had created a total of 3033 cars and had won victories at LeMans five times. The litre series engines began in 1919 with the four-cylinder 3-litre unit.....
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1928 Vehicle Profiles

1928 Bentley 6 ½-Litre vehicle information
Open Sports Tourer
Coachwork: Barker

Chassis Num: BR2354
Engine Num: BR2361

Performance and Specification Comparison

6½ Litre

Year
Production
Wheelbase
Engine
Prices
132.00 in.
6 cyl., 402.57 CID., 180.00hp
132.00 in.
6 cyl., 402.57 CID., 180.00hp
132.00 in.
6 cyl., 402.57 CID., 180.00hp
132.00 in.
6 cyl., 400.74 CID., 147.00hp

Industry Production

#1#2#3Bentley
1933Chevrolet (486,261)Ford (334,969)Plymouth (298,557)
1932Chevrolet (313,404)Ford (210,824)Miller (210,824)
1931Chevrolet (619,554)Ford (615,455)Buick (138,965)
1930Ford (1,140,710)Chevrolet (640,980)Buick (181,743)
1929Ford (1,507,132)Chevrolet (1,328,605)Buick (196,104)
1928Chevrolet (1,193,212)Ford (607,592)Willys Knight (231,360)
1927Chevrolet (1,001,820)Ford (367,213)Buick (255,160)
1926Ford (1,669,847)Chevrolet (547,724)Buick (266,753)
1925Ford (1,669,847)Chevrolet (306,479)Dodge (201,000)
1924Ford (1,922,048)Chevrolet (264,868)Dodge (193,861)
1923Ford (1,831,128)Chevrolet (323,182)Buick (210,572)

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