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Bentley 4.25 litre (1936 - 1939) 'subdued elegance'


 


Bentley 4 1/4 Litre, 1937, Gurney Nutting 3-Position-Drophead Coupé

From the Rolls-Royce factory in Derby the second model to bear the Bentley label was the Bentley 4 1/4 Litre. For an extra £ 50 a 4 1/4 litre engine was offered from March 1936 as an option in the already well-received Bentley 3 1/2 Litre chassis. Within short period sales of the 3 1/2 Litre declined and in fact the Bentley 4 1/4 Litre had become its substitute. The MR and MX chassis series introduced in 1939 were the final development of this model. Features like over-drive top gear as standard and improved White Metal bearings made the car ideal, then and now, for unstressed long distance Continental touring. 1243 cars were built.


Bentley 4 1/4 Litre, 1939, H.J. Mulliner fixed head coupé

Wheelbase 3200 mm 126 in  
Track front 1422 mm 56 in  
rear 1422 mm 56 in  
Length 4420 mm 174 in  
Width 1753 mm 69 in  
Ground clearance 155 mm 6.1 in  
Kerb weight 1118 kg 2465 lb  
Fuel capacity 81.8
litres
18
UK Gal
21.6
US Gal
Type S-6
oise
12 valves total
2 valves per cylinder
Bore × stroke 88.89mm × 114.30mm
3.5 in × 4.5 in
Bore/Stroke ratio 0.78
Displacement 4256 cc
(259.717 cu in)
Unitary capacity 709.33 cc/cylinder
Compression ratio 6.40:1
Fuel system 2 SU carbs
Aspiration Normal
Coolant Water
chassis
Engine location Front
Engine alignment Longitudinal
Turning circle 12.50 m
Transmission 4M
Drive RWD
Top gear ratio 0.84
Final drive ratio 4.30