Lotus 11 group S (1956)
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Home » Racing Sports Cars » Lotus 11

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Chassis numbers
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Specifications

270 units built
Click here and here and here
Click here and here and here for Climax 100
Click here and here for Climax 75
Click here and for Climax 85
Click here for Climax 150
Click here for production 1.1

Homologation number: GT 112
Homologation start: 9/5/1963

Coventry Climax FWA "75", straight 4 cyl, 4 stroke, petrol engine
1098cc, 72.4 x 66.68 mm
9.8 : 1
56 kW / 75 hp @ 6200 rpm
92 Nm / 68 ft-lb @ 5000 rpm
drop forged steel crankshaft with 3 main bearings
2 valves / cylinder, SOHC
aspiration, natural with 2 x 1-1/2" SU H4 horizontal carburetors, 2 x Weber 38 DOC3
distributor ignition
water cooled

Coventry Climax FWA "85", straight 4 cyl, 4 stroke, petrol engine
1098cc, 72.4 x 66.68 mm
9.8 : 1
63.5 kW / 85 hp @ 6250 rpm
100 Nm / 74 ft-lb @ 4400 rpm
drop forged steel crankshaft with 3 main bearings
2 valves / cylinder, SOHC
aspiration, natural with 2 x 1-1/2" SU H4 horizontal carburetors
distributor ignition
water cooled

Coventry Climax FWB "100", straight 4 cyl, 4 stroke, petrol engine
1459cc, 76.2 x 80.0 mm
8.6:1
101 bhp / 75 KW @ 6000 rpm
125 Nm / 92 ft-lb @ 4400 rpm
forged steel crankshaft with 3 main bearings
2 valves / cylinder, SOHC
aspiration, natural with 2 x SU horizontal carburetors
water cooled

Coventry Climax FWC, straight 4 cyl, 4 stroke, petrol engine
744cc, 72.4 x 45.2 mm
9.8 : 1
3 main bearings
2 valves / cylinder, SOHC
aspiration, natural with 2 x 1-1/2" SU H4 horizontal carburetors
distributor ignition
water cooled

Coventry Climax FPF "150", straight 4 cyl, 4 stroke, petrol engine
1475cc, 81.2 x 71.1 mm
8.6:1
109 kW / 146 hp @ 7000 rpm
aluminium alloy block and head
forged steel crankshaft with 3 main bearings
2 valves / cylinder, DOHC, gear driven
aspiration, natural with 2 x Weber DCO carburetors
water cooled
dry sump
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MG 4 speed Manual gearbox
1st: 2.50/1
2nd: 1.67/1
3rd: 1.23/1
4th: 1.00/1
R: 2.50/1
final drive, 4.22/1, 3.73/1, 4.875/1, 5.125/1, 4.55/1, 3.89/1, 5.375/1
aluminium body on steel tubular spaceframe chassis
Front suspension swing axles, coil springs over dampers
Rear suspension DeDion axle, coil springs over dampers
rack-and-pinion steering
discs, all-round, inboard rear
Length 3404 mm (134 in)
Width 1524 mm (60 in)
Height 940 mm (37 in)
Wheelbase 2159 mm (85 in)
Track (fr/r) 1194 mm (47 in) / 1194 mm (47 in)
tires, front 4.50 x 15", rear 5.00 x 15"
450kg
fuel tank, 40 lt
drag coefficient, 0.34


Results in WSCC

Season
Car entry, chassis number Car number/ result
Buenos Aires Sebring Mille Miglia Nurburgring Sverige
Team 1000km 12h 1600km 1000km GP
Lotus Engineering Co, 11-155 (Climax 1.5) #45, acci dent in practice
Ralph Miller/ Harold Fenner, 11-150 (Climax 1.1) #63, oil system
Mike Young (Climax 1.1) in entry list
Statistics
Works Starts/finishes 2/0 2/0
Drivers Team entries and car number
Lotus Engineering Co
Colin Chapman 45
Len Bastrup 45

Stewart_Smith_1957_Lotus_11.jpg Source
11.jpg Source
Eleven-01s.jpg Source
SUCarbKit.JPG Source

Drawings

lotus-11-drawing-21.jpg Source

Coventry Climax FWA engine

FWA%20Climax.JPG Source

Coventry Climax FWB engine curves

powercurves.jpg Source

SU H4 carburetor

tech_su_04a.jpg Source
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