Bentley Speed 6 group S (1929)

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Source

Specifications

182 units built (3 works cars)
6.5 lt: 362 unit built

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Bentley, straight 6 cyl, 4 stroke, petrol engine
100 x 140 mm
6597 cc
5.3:1, works 6.1:1
180 hp (130 kW) @ 3500 RPM, works 200 hp (144 kW) @ 3500 RPM
cast iron block in a single piece with cylinder head
SOHC, 4 valves/cyl - 24 valves total
aspiration, 2 x SU HVG5 carburettors
2 x ignition magnetos, twin spark plugs per cylinder
water cooled
dry sump
Bentley C-Type 4 speed Manual gearbox
final drive, 3.84/1
single dry plate clutch
steel ladder type rolling chassis, Vanden Plas bodyshell (also Gurney Nutting, Hooper, Mulliner, Corsica)
Front suspension: dead solid I-beam axle with semi-elliptical leaf springs and friction dumpers
Rear suspension: live Solid axle with semi-elliptical leaf springs and friction dumpers
finned 400mm drum brakes all around with 4 leading shoes per drum, power assistance
length, 4420 mm (174")
width, 1740 mm (68.5")
wheelbase, 3353 mm (132")
wheels, front 6 x 21, rear 7 x 21
2200 kg
fuel tank, 114 lt

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Results in Endurance Races

1929Season

Car entry, chassis number	Car number/ result
	Mille Miglia	Targa Florio	Brooklands	Le Mans	Brooklands	Spa	DE	Guipo zcoa	Tourist Trophy
Date	14/4	5/5	11/5	16/6	30/6	7/7	14/7	28/7	17/8
Team	1600km	540km	2x12h	24h	6h	24h	GP	12h	750km
Bentley Motors Ltd, LB2332			#2, dqf	#1, 1st	#3, 1st			#5, in entry list	#73, acci dent
Total points 20				10	10
Statistics
Starts/finishes 4/2			1/0	1/1	1/1				1/0
Drivers	Team entries and car number
Bentley Motors Ltd
Woolf Barnato			2	1	3			5
Dudley Benjafield			2
Jack Dunfee					3
Glen Kidston									73

1930Season

Car entry, chassis number	Car number/ result
	Mille Miglia	Targa Florio	Brooklands	Le Mans	Spa	Tourist Trophy	Brooklands
Date	13/4	4/5	10/5	22/6	6/7	23/8	4/10
Team	1600km	540km	2x12h	24h	24h	750km	500mil
Bentley Motors Ltd, HM2868			#2, 1st	#2, 2nd
Bentley Motors Ltd, HM2869			#3, 2nd	#3, acci dent
Bentley Motors Ltd, LB2332				#4, 1st
Total points 38			19	19
Statistics
Starts/finishes 5/4			2/2	3/2
Drivers	Team entries and car number
Bentley Motors Ltd
Frank Clement			2	2
Woolf Barnato			2	4
Sammy Davis			3	3
Clive Dunfee			3	3
Dick Watney				2
Glen Kidston				4

1931Season

Car entry, chassis number	Car number/ result
	Mille Miglia	Brooklands	Targa Florio	Le Mans	Tourist Trophy	Brooklands
Date	12/4	9/5	10/5	14/6	22/8	3/10
Team	1600km	2x12h	584km	24h	750km	500mil
Henry Birkin/ Jack Barclay, HM2869		eng ine
Wolf Barnato, LB2332 (Gurney Nutting body)						#46, 1st
Total points 10						10
Statistics
Starts/finishes 2/1		1/0				1/1
Drivers	Team entries and car number
Wolf Barnato
Clive Dunfee						46
Cyril Paul						46

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Source
Le Mans '30
Source
Chassis LB2332 with '31 Gurney Nutting streamlined bodyshell with tail

Drawings

Source
Source
Tim Birkin's Speed 6