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Bentley racing car "Mother Gun", built 1927, 4.5 L engine. Bentley 4½ Litre No. 10 took third at the 1929 24 Hours of Le Mans. Between 1927 and 1931 the Bentley 4½ Litre competed in several competitions, primarily the 24 Hours of Le Mans. The first was the Old Mother Gun at the 1927 24 Hours of Le Mans, driven as a prototype before production ...
The 4-litre chassis was conceived and built in a failed attempt to restore Bentley to a good financial state. Announced 15 May 1931, [ 6 ] it used a modified 4-litre Ricardo IOE engine in a shortened 8 Litre chassis at two-thirds of the price of the 8 Litre in an attempt to compete with the Rolls-Royce 20/25 .
Bentley adhered strictly to his own assertion that increasing displacement is always preferable to forced induction: [5] To supercharge a Bentley engine was to pervert its design and corrupt its performance. However, in the winter of 1926/7, chassis FR5189, a 3-litre car, was the first car fitted with a supercharger at the factory.
He was planning to install an unsupercharged geared Napier Lion racing engine and remove the floats for an attempt to break the world air speed record, but the plans did not come to fruition. [ 3 ] In 1936 Villiers developed a 120/130 hp four-cylinder aero engine, the Amherst Villiers Maya I (named after his wife). [ 4 ]
This engine is Bentley's first diesel and only offered in the Bentayga. Included are a badge on the front wing and the trapezoid quad exhaust tips. Bentley claims performance of the 4.0 L, twin-turbo diesel of 0–60 mph (0–97 km/h) in 4.6 seconds, 0–100 km/h (0–62 mph) in 4.8 s, and a top speed of 168 mph (270 km/h). [26]
3½-litre coupé de ville by Thrupp & Maberly 1934. The Bentley 3½ Litre (later enlarged to 4¼ Litre) was a luxury car produced by Bentley from 1933 to 1939. It was presented to the public in September 1933, shortly after the death of Henry Royce, and was the first new Bentley model following Rolls-Royce's acquisition of the Bentley brand in 1931.
In August 1938 the engine bore was increased to 77.47 mm (3.050 in) and the engine was renamed E 4. [13] The increase in bore increased the following: Cubic capacity to 3,960 cc (241.7 cu in) [14] Power output to 95 bhp (71 kW; 96 PS) [14] @3,600 rpm, [4] and; Tax rating to 29.77 hp [4] 4-litre Thirty 1939 example for the Lord Mayor of London
Power came from a new 4.5-litre air-cooled engine designed by Mezger, which was a combination of 2 of Porsche's 2.25L flat-6 engines used in previous racing cars. The 'Type 912' engine featured a 180° flat-12 cylinder layout, twin overhead camshafts driven from centrally mounted gears and twin spark plugs fed from two distributors. [10]