Bugatti Type 45 47

Bugatti Type 45 4716-cylinder Competition
(45 Racing, 47 Grand Sport)

Identifying Features:
Engine, wide rear spring mounting, deep chassis frame

Years Made
(approx): 1929-30

Number Made:

No of cylinders: 16
Bore x stroke: T47 60 x 66mm; T45 60 x 84mm
Capacity: 2986cc, 3801cc
BHP (approx): 200, 250
RPM Limit (prudent): 5000
Camshafts: 2 x sohc
Valves (per cylinder): 3
Camshaft drive: Rear, spur train
Crankshaft bearings: full roller mains, plain central, plain rods, cranks geared together
Supercharger (Roots): Twin, rear mounted
Carburettor: 2 Zenith
Ignition: 2 Magnetos
Plugs per cylinder: 1

Type: Multi-disc

Location: Central, Separate, 4-speed and reverse

Rear Axle:
Normal Ratio: T45: 15/42 = 2.8
T47: 13/54 = 4.15

Wheelbase: T45: 102.2in (2.60m)
T47: 108.3in (2.75m)
Track: 49.2in (1.25m)
Chassis Weight (approx): 2000lb (900kg)

Location and Type: 4-wheel, cable operated

Type: Cast alloy GP
Tyre size: original 28 x 4.75; modern fitment 5.00 x 19

Crossbreeding with Other Types:
Unique apart from axles and some engine parts


Comments are closed.