1925 Bugatti Type 39 Grand Prix

1925 Bugatti Type 39 Grand Prix

1925 Bugatti Type 39 Grand Prix

To comply with the 1.5 litre Grand Prix regulations, Bugatti built the Type 39 which was similar in specification to the larger Type 35C. Only the engine was modified to have a shorter stroke that was reduced by 22mm.

The Type 39 was also available with a supercharger and known as the Type 39A. Some engines were produced with an smaller bore to produce 1092cc.

Our feature car is chassis 4607 that was driven by Meo Costantini to 7th overall and first in class at the Grand Prix de l’ACF Tourisme at Montlhéry on July 19, 1925. The formula at Montlhéry was similar to the ACF’s 24 Hours of Le Mans which required fenders, lights, ballast and starters and similar road equipment.

Among the five factory entrants by Bugatti, Costantini managed to beat the Darracqs and his teammates to score a Bugatti 1-2-3-4.

1925 Bugatti Type 39 Grand Prix Gallery

See full 1925 Bugatti Type 39 Grand Prix Gallery here

In Detail

typeRacing Car
built atFrance
positionFront, Longitudinal
block materialCast Iron
valvetrainSOHC, 3 Valves per Cyl
fuel feedZenith Carburettor
displacement1496 cc / 91.29 in³
bore52 mm / 2.0 in
stroke88 mm / 3.5 in
power67.1 kw / 90 bhp @ 5500 rpm
specific output60.16 bhp per litre
bhp/weight120.0 bhp per tonne
torque81.3 nm / 60 ft lbs @ 2000 rpm
body / frameAluminum Body over Steel Frame
driven wheelsRWD
wheel typeCast Aluminum w/Integral Brake Drum
front tires28 x 4.95
rear tires28 x 4.95
front brakesDrums
rear brakesDrums
front wheelsF 48.3 x 12.7 cm / 19 x 5 in
rear wheelsR 48.3 x 12.7 cm / 19 x 5 in
steeringWorm & Wheel
f suspensionSolid Axle w/Semi-Elliptic Leaf Springs, Friction Dampers
r suspensionLive Axle w/Reverse Quater-Elliptic Leaf Springs, Friction Dampers
curb weight750 kg / 1654 lbs
wheelbase2400 mm / 94.5 in
front track1200 mm / 47.2 in
rear track1200 mm / 47.2 in
transmission4-Speed Manual
final drive4.15:1
top speed~185.03 kph / 115 mph
0 – 100 mph~9.0 seconds