the Bugatti revue: Bugattis by type
A virtual magazine for a true passion!

Editor: Jaap Horst


Volume 24, Issue 1

Bugattis by type


This Bugattis by type listing exists since Volume 4 of the Bugatti Revue, However this one is incredibly more complete. I received basic info from Sylvain Vezier, and made almost no changes.

However, we know that there may still be errors or omissions in this list with more than 160 types and versions, from Type "0" to Type 451. Therefore, please react when you find any errors!

BORE STROKE VOLUME CYLS. VALVES Carb/Asp. B.H.P. Wheelbase Body YEARS REMARKS
Type "0" - - - 3 - - - T 1897 Prinetti & Stucchi - 3 wheels & 2 ENGINES
Type 1 - - - 4 - - - T 1898/99 Prinetti & Stucchi quadricyle with 4 engines derived from De Dion , weelbase nearly 1,50 m
Type 2 90mm 120mm 3055cc 4 8-OHV 1 N/A - 1.95 m T 1900/01 Gulinelli 4 cylinders
Type 3 114mm 130mm 5310cc 4 8-OHV 1 N/A 20 / 24 2.25 m T 1902 De Dietrich 20/24 CV 4 cyl.
Type 4 1902 114mm 130mm 5310cc 4 8-OHV 1 N/A 24 / 28 2.35 m T 1902 De Dietrich 24/28 CV 4 cyl.
Type 4 1903 114mm 130mm 5310cc 4 8-OHV 1 N/A 24 / 28 2,40 m & 2,85 m T 1903 De Dietrich 24/28 CV 4 cyl.
Type 4 1903 124mm 130mm 6280cc 4 8-OHV 1 N/A 30 / 34 2,40 m & 2,85 m T 1903 De Dietrich 30/34 CV 4 cyl.
Type 4 1903 114mm 130mm 2644cc 2 8-OHV 1 N/A 12 ? T 1903 De Dietrich 12 CV 2 cyl.
Type 4 1904 114mm 130mm 5310cc 4 8-OHV 1 N/A 24 / 28 2,55 m , 2,65 m & 2,85 m T 1904 De Dietrich 24/28 CV 4 cyl.
Type 4 1904 124mm 130mm 6280cc 4 8-OHV 1 N/A 30 / 34 2,55 m , 2,65 m & 2,85 m T 1904 De Dietrich 30/34 CV 4 cyl.
Type 5 160mm 160mm 12868cc 4 8-OHV 1 N/A 60 2,95 m & 3,00 m R 1904 De Dietrich Paris-Madrid 4 cyl.
Type 6 136mm 146mm 8484cc 4 4OI/4SE 1 N/A 50 2.90 m T 1904/07 Mathis 40/50 CV 4 cyl.
Type 6 140mm 146mm 8990cc 4 4OI/4SE 1 N/A 60 2.90 m T 1904/07 Mathis 50/60 PS 4 cyl.
Type 7 160mm 150mm 12064cc 4 4OI/4SE 1 N/A 90 2.90 m T 1904/07 Mathis 90 PS 4 cyl.
Type 8 150mm 150mm 10602cc 4 8-OHC 1 N/A - 3.098 m T 1907/09 Prototype 4 cyl. chain drive
Type 8 a 145mm 150mm 9908cc 4 8-OHC 1 N/A 65 3.10 m T Deutz 65 PS 4 cyl. chain drive
Type 8 b 124mm 130mm 6279cc 4 8-OHC 1 N/A 45 3.10 m T Deutz 45 PS 4 cyl. chain drive
Type 8 c 110mm 130mm 4942cc 4 8-OHC 1 N/A 35 3.10 m T 1907/09 Deutz 35 PS 4 cyl. chain drive
Type 8 as 145mm 160mm 10569cc 4 8-OHC 1 N/A 3.10 m T Deutz Prince Henri 1908, like type 8a except engine 145x160
Type 9 b 124mm 130mm 6279cc 4 8-OHC 1 N/A 45 3.18 m T Deutz 45 CV 4 cyl. shaft drive
Type 9 ba 124mm 130mm 6279cc 4 8-OHC 1 N/A 45 3.28 m T Deutz 45 CV 4 cyl. shaft drive
Type 9 c 110mm 130mm 4942cc 4 8-OHC 1 N/A 35 3.18 m T Deutz 35 CV 4 cyl. shaft drive
Type 9 ca 110mm 130mm 4942cc 4 8-OHC 1 N/A 35 3.28 m T Deutz 35 CV 4 cyl. shaft drive
Type 9 bs 124mm 140mm 6763cc 4 8-OHC 1 N/A 3.18 m T 1909 Deutz Prince Henri 1909, like 9b but engine 124x140
Type 9 cs 110mm 160mm 6082cc 4 8-OHC 1 N/A 3.18 m T 1910 Deutz Prince Henri 1910, like 9c but engine 110x160
Type 10 62mm 100mm 1208cc 4 8-OHC 1 N/A 1.90 m T 1909/10 Deutz "Petit Pur Sang", 4 cyl.
Type 11 95mm 120mm 3402cc 4 8-OHC 1 N/A 3.10 m T - Deutz , 4 cyl. shaft drive
Type 11s 95mm 155mm 4395cc 4 8-OHC 1 N/A 3.10 m T 1910 Deutz Prince Henri 1910, like type 11 but engine 95x155
Type 12 100mm 160mm 5027cc 4 12-OHC 1 N/A 70 2.90 m T 1910 Aero engine 4 cyl. with 3 valves, 100 X 160 = 5027 cm3 mounted on a chassis and gearbox of
type 7 Mathis for the 1910 Prince Henri cup, chain drive, first appearance of the oval radiator.
Type 13 original 65mm 100mm 1327cc 4 8-OHC 1 N/A 20 2 m T 1910/13 Chassis and engine derived from type 10
Type 13 s 65mm 110mm 1460cc 4 8-OHC 1 N/A 2 m R 1910/14 Special racing engine with 4 cyl. 65x110 ( Mayenne , Sarthe )
Type 14 65mm 100mm 1327cc 4 8-OHC 1 N/A 20 2 m T Numerous mechanical modifications on engine and chassis type 13 with Prince Henri styled radiator
Type 15 65mm 100mm 1327cc 4 8-OHC 1 N/A 20 2.40 m T 1910/13 Tourism car, chassis wheelbase. 2,4 m , 1327 cm3 engine
Type 15 a T Tourism car like type 15 but with twin leaf springs at the rear
Type 16 55mm 90mm 855cc 4 8-T-head - - R 1912/14 Prototype car 4 cyl. with lateral valves 55x90 = 855 cm3 . The licence was sold to Peugeot and
named Bébé. First appearance of the famous reversed 1/4 elliptic rear springs
Type 17 65mm 100mm 1327cc 4 8-OHC 1 N/A 20 2.55 m T 1910/13 Tourism car, chassis wheelbase. 2,55 m
Type 18 100mm 160mm 5027cc 4 8-OHC 1 N/A 2.39, 2.54 & 2.85 m T 1912/14 Racing and tourism car , 4 cyl. , chain drive, Reversed 1/4 elliptic rear springs
Type 19 65mm 100mm 1327cc 4 8-OHC 1 N/A 20 1.95 m T Racing Chassis type 13 with reversed 1/4 elliptic rear springs ( 4 made ) wheelbase 1,95 m
2 chassis with engine 65x100 and 2 with 16 valves 66x100
Type 20 65mm 100mm 1327cc 4 8-Side 1 N/A - 2.64 m T 1913 Peugeot BP2 , First chassis with integral side frames
Type 21 100mm 160mm 5027cc 4 8-OHC 1 N/A 2.54 m R / T 1913 Racing and tourism car with modified type 18 engine and a new integral chassis, wheelbase 2,54m
Type 22 65mm 100mm 1327cc 4 8-OHC 1 N/A 2.40 m T 1913/26 Tourism car, engine type 14 1327 cm3, rear 1/4 elliptic springs, wheelbase 2,40m, oval radiator
Type 23 65mm 100mm 1327cc 4 8-OHC 1 N/A 40 2.55 m T 1913/26 As type 22, but weelbase 2,55m
Type 24 100mm 180mm 5655cc 4 8-OHC 1 N/A - - Racing car for Indianapolis 1914, 4 cyl. engine 100x180, shaft drive
Type 25 68mm 108mm 1569cc 4 8-OHC 1 N/A - - Engine 4 cyl. 68x108 = 1569 cm3 on chassis type 22
Type 26 68mm 108mm 1569cc 4 8-OHC 1 N/A - - Like type 25, but chassis type 23
Type 27 66mm 100mm 1368cc 4 16-OHC 2 N/A T 1913/26 Project tourism car with 16 valves engine
Engine 120mm 160mm 14476cc 8 32-OHC 2 N/A 200 Aero engine, 8 cyl. Steel engine with 4 valves, 120 x 160 = 14476 cm3, licence sold to DIATTO
Engine 110mm 160mm 12164cc 8 24-OHC 2 N/A 250 Aero engine, 8 cyl; cast-iron blocks with 3 valves , 110 x 160 = 12164 cm3
Engine 108mm 160mm 24328cc 16 48-OHC 4 N/A 450 Aero engine, U 16 cast-iron engine, 110 x 160 = 24328 cm3 , licence sold to the USA
Type 13/27 66mm 100mm 1368cc 4 16-OHC 1 N/A 1.967 m R Racing car, 4 cyl. 16 valves, DA*, pear-drop radiator
Type 22/27 68mm 100mm 1453cc 4 16-OHC 1 N/A 2.40 m T Tourism car, chassis type 22, 68x100 and 69x100 (1496cc), Single ignition, pear-drop radiator
Type 23/27 68mm 100mm 1453cc 4 16-OHC 1 N/A 2.55 m T Tourism car, chassis type 23, 68x100 and 69x100 (1496cc), Single ignition, pear-drop radiator
Type 13 68mm 100mm 1453cc 4 16-OHC 1 N/A R BRESCIA Racing car, DA,crankshaft in 3 parts with 2 ball and 1 plain bearings. Still with pear-drop radiator
Type 13 A 69mm 100mm 1496cc 4 16-OHC 1 N/A 1.967 m "Brescia Modifié" , 4 wheel brakes, single or double ignition, new radiator
Type 22 A 69mm 100mm 1496cc 4 16-OHC 1 N/A 2.417 m "Brescia Modifié" , 4 wheel brakes, single or double ignition, new radiator
Type 23 A 69mm 100mm 1496cc 4 16-OHC 1 N/A 2.567 m "Brescia Modifié" , 4 wheel brakes, single or double ignition, new radiator
Type 28 70mm 100mm 3079cc 8 24-OHC 2 N/A - 3.15 m 1919 Prototype tourism car, 2 speeds transaxle
Type 29 60mm 88mm 1991cc 8 24-OHC 2 N/A 100 R 1922 8 cyl. engine with 3 valves and DA, cankshaft with 3 ball bearings and 6 bronze rings
55 x 85 = 1615 cm3 ; 52 x 88 = 1495 cm3 ; 60 x 88 = 1991 cm3
Type 22/29 60mm 88mm 1991cc 8 24-OHC 2 N/A 2.40 m ACF 1922 Grand Prix racing car, 8 cyl.type 29 engine, 60 x 88 = 1991 cc , chassis type 22
Type 30 60mm 88mm 1991cc 8 24-OHC 2 N/A 75 S/R 1922/26 Tourism car, wheelbase 2,85m , 8 cylindres 60 x 88 = 1991 cc single ignition
Type 30 A Tourism car with type 30 engine , wheelbase 2,967 m
Type 22/30 "Racing car 8 cyl.single ignition 60 x 88 = 1991 cm3 with 4 carburetors , chassis type 22
Single seater bodywork designed by Bechereau for Indianapolis 1923 race "
Type 31 - - - - - - - - - "Racing car 8 cyl. DOHC, 4 valves. 2 speeds gearbox, that Martin de Alzaga asked Ettore Bugatti
to build for the Indianapolis 500 miles race of 1923 (speculative suggestion, see explanation below)"
Type 32 60mm 88mm 1991cc 8 24-OHC 2 N/A - R 1922/23 "GP racing car for ACF 1923, 8 cyl. engine 1991 cm3 with 3 ball and 2 roller bearings crankshaft
3 speeds transaxle, wheelbase 2 m. 1/4 elliptic springs for front and back axle, underslung chassis"
Type 33 60mm 88mm 1991cc 8 24-OHC - - - 1923 "Prototype tourism car , 8 cyl.1991 cm3, 3 speeds transaxle , wheelbase 2,97 m. First chassis with
curved side frames "
Type 34 125mm 160mm 31416cc 16 48-OHC - 700 X 1923 U 16 aero-engine 125 x 160 = 31416 cm3 , study for french government
Type 35 60mm 88mm 1991cc 8 24-OHC 2 N/A 100 2.4 m R 1924/31 Famous GP racing car 8 cyl. 60 x 88 = 1991 cm3 , wheelbase 2,4 m
Type 35 a 60mm 88mm 1991cc 8 24-OHC 2 N/A 75 2.4 m S/R 1926/29 Imitation type 35 with type 38 engine, called "Thecla"
Type 35 C 60mm 88mm 1991cc 8 24-OHC 1 S/C 125 2.4 m R - Type 35 with Roots blower
Type 35 T 60mm 100mm 2262cc 8 24-OHC 2 N/A 110 2.4 m R 1924/31 Type 35 with enlarged engine 60 x 100 = 2262 cm3
Type 35 TC (B) 60mm 100mm 2262cc 8 24-OHC 1 S/C 150 2.4 m R 1924/31 Like type 35 T but with a Roots blower
Type 36 52mm 88mm 1495cc 8 24-OHC ? - 2.5 m R 1925 1925 single seater without rear suspension, type 39 engine 52 x 88 = 1495 cm3 , weelbase 2,50 m
Type 36 51.3mm 66mm 1091cc 8 24-OHC - 2.5 m R 1926 1926 modified version with rear suspensions. Engine type 39B : 51,3 x 66 = 1091 cm3
Type 37 69mm 100mm 1496cc 4 12-OHC 1 N/A 60 2.4 m S 1926/30 Chassis type 35 , 4 cyl. engine 69 x 100 = 1495 cm3
Type 37 A 69mm 100mm 1496cc 4 12-OHC 1 S/C 85 2.4 m R 1926/30 Type 37 with a Roots blower
Type 38 60mm 88mm 1991cc 8 24-OHC 2 N/A 75 3.12 m T 1926/27 Tourism car 8 cyl. With 3 bearings crankshat 60 x 88 = 1991 cm3 , wheelbase 3,12 m
Type 38 A 60mm 88mm 1991cc 8 24-OHC 1 S/C 95 3.12 m T 1927 Type 38 with a Roots blower
Type 39 52mm 88mm 1495cc 8 24-OHC 2 N/A 100 2.4 m R 1924/31 Touring GP car, chassis type 35 , 8 cyl.without blower , 52 x 88 = 1495 cm3
Type 39 A 52mm 88mm 1495cc 8 24-OHC 1 S/C 130 2.4 m R 1926/27 GP car, chassis type 35, 8 cyl.with blower, 52 x 88 = 1495 cm3
Type 39 B 51.3mm 66mm 1091cc 8 24-OHC 1 S/C 2.4 m R 1926 Blown 8 cyl. 51,3 x 66 = 1091 cm3 used in 1926 type 36
Type 39 C 54mm 81mm 1484cc 8 24-OHC 1 S/C 2.4 m R GP car, chassis type 35 , 8 cyl.with blower, 54 x 81 = 1484 cm3
Type 39 D 60mm 66mm 1493cc 8 24-OHC 1 S/C 2.4 m R GP car, chassis type 35 , 8 cyl.with blower, 60 x 66 = 1493 cm3
Type 40 69mm 100mm 1496cc 4 12-OHC 1 N/A 60 2.56 / 2.71 m T 1926/30 Tourism car, type 37 engine, chassis type 23 wheelbases 2,56m , modified version 2,71 m
Type 40 a 72mm 100mm 1627cc 4 12-OHC 1 N/A ~70 2.71 m T 1930 Tourism car, engine block type 49 but SA*, 72 x 100 = 1627 cc, wheelbase 2,71 m
Type 41 125mm 130mm 12763cc 8 24-OHC 1 N/A 275 4.3 m T 1929/32 "Luxury car called "" la royale "", 8 cyl. 125 x 130 = 12763 cm3 , wheelbase. 4,3m
There was never a 4,67 m weelbase chassis nor a 15 liters engine"
Type 42 125mm 160mm 15708cc 8 24-OHC 1 N/A 300 - X - Marine engine 8 cyl.125 x 160 = 15708 cm3 for the unrealised transatlantique boat
Type 43 60mm 100mm 2262cc 8 24-OHC 1 S/C 150 2.97 m S 1927/30 Grand sport car with 35 B engine and chassis type 33 , wheelbase 2,97 m
Type 43 a 60mm 100mm 2262cc 8 24-OHC 1 S/C 120 2.97 m T 1931/32 Roadster version of type 43 with a detuned engine
Type 43 A 60mm 84mm 3800cc U16 48-2OHC 2 S/C 2.97 m Chassis 43 with 16 cyl. type 45 engine , never realised
Type 44 69mm 100mm 2991cc 8 24-OHC 1 N/A 100 3.12 m T 1927/30 Tourism car, 8 cyl. 69 x 100 = 2991 cm3, chassis type 38 wheelbase 3,12m
Type 45 60mm 84mm 3800cc U16 48-2OHC 2 S/C - 2.60 m X 1933 GP racing car, U 16 engine 60 x 84 = 3800 cm3, wheelbase 2,60m
Type 46 81mm 130mm 5359cc 8 24-OHC 1 N/A 140 3.50 m T 1929/36 Tourism car 8 cyl. 81 x 130 = 5369 cm3, "la petite royale" , wheelbase 3,50 m
Type 46 S 81mm 130mm 5359cc 8 24-OHC 2 S/C 160 3.50 m T 1930/36 Type 46 with a Roots blower
Type 47 60mm 66mm 286cc U16 48-2OHC 2 S/C - 2.75 m S 1933 Grand sport car , U 16 engine 60 x 66 = 2986 cm3 , wheelbase 2,75 m
Type 48 60mm 88mm 995cc 4 12-OHC 1 N/A - - - 4 cyl. engine, half a type 35, 60 x 88 = 995 cm3 , for the Peugeot 201 X
Type 49 72mm 100mm 3257cc 8 24-OHC 1 N/A 110 3.12 / 3.22 m T 1930/34 Tourism car 8 cyl. DA , 72 x 100 = 3257 cc, replace type 44, wheelbase 3,12 m & 3,22 m
Type 50 86mm 107mm 4972cc 8 16-2OHC 2 S/C 225 3.10 m S 1930/34 Grand sport car, first DOHC, 8 cyl. 86 x 107 = 4972 cm3 , wheelbase 3,10 m
Type 50 T 86mm 107mm 4972cc 8 16-2OHC 2 S/C 225 3.50 m T 1930/34 Tourism car, type 50 engine on type 46 chassis
Type 50 B I 84mm 107mm 4743cc 8 16-2OHC 1 S/C 480 R 1935/39 Racing engine derived from type 50 but with an aluminium block, 84 x 107 = 4743 cm3
Type 50 B II 84mm 100mm 4433cc 8 16-2OHC 1 N/A 300 R 1935/39 50 B engine without blower, 84 x 100 = 4433 cm3
Type 50 B III 78mm 78mm 2981cc 8 16-2OHC 1 S/C 300 R 1935/39 50 B engine with blower, 78 x 78 = 2981 cm3
Type 50 S 86mm 107mm 4972cc 8 16-2OHC 2 S/C 225 S 1936 Sport car with independent front suspension, type 50 engine, intended for Le Mans 1936
Type 51 60mm 88mm 1991cc 8 16-2OHC 1 S/C 160 2.4 m R 1931/35 GP racing car, chassis type 35 , 8 cyl. DOHC , 60 x 100 = 2262 cm3
Type 51-1 60mm 100mm 2262cc 8 16-2OHC 1 S/C 180 2.4 m R 1931/35
Type 51 A 60mm 66mm 1493cc 8 16-2OHC 1 S/C 130 2.4 m R 1931/35 GP racing car, chassis type 35 , 8 cyl. DOHC , 60 x 66 = 1493 cm3
Type 52 - - 4600cc 8 32-OHC - - - - Ettore study for an 8 cyl. with steel cylinders and 4 vertical valves, 4600 cm3
Baby Electric Children's car
Type 53 86mm 107mm 4972cc 8 16-2OHC 1 S/C 250 2.6 m R 1929 GP racing car with 4 wheel drive, modified type 50 engine, wheelbase 2,60m
Type 54 86mm 107mm 4972cc 8 16-2OHC 1 S/C ~300 2.75 m R 1932/34 GP racing car, same engine as type 53, chassis type 47
Type 55 60mm 100mm 2262cc 8 16-2OHC 1 S/C 130 2.75 m S 1932/35 Grand sport car , detuned type 51 engine, chassis type 47
Type 56 - - - - - - - - - Personal electric car for Ettore's use. Finally 10 cars were sold
Type 57 72mm 88mm 2866cc 8 16-2OHC 1 N/A 110? 3.30 m T 1933 Prototype tourism car with IFS, called "Crème de menthe" . 8 cyl. 72 x 88 = 2866 cc
Type 57 A 72mm 100mm 3257cc 8 16-2OHC 1 N/A 135 3.30 m T 1934 72 x 100 = 3257 cm3 version of type 57 engine
Type 57 B 72mm 100mm 3257cc 8 16-2OHC 1 N/A 135 3.30 m T 1934/37 Production car "série 1" , 3257 cm3 chassis wheelbase 3,30 m
Type 57 C 72mm 100mm 3257cc 8 16-2OHC 1 S/C 160 3.30 m T - Supercharged version of type 57
Type 57 S 72mm 100mm 3257cc 8 16-2OHC 1 N/A 150 2.98 m S - Sports car, type 57 engine with dry sump, new chassis wheelbase 2,98 m
Type 57 SC 72mm 100mm 3257cc 8 16-2OHC 1 S/C 170 2.98 m S Supercharged version of type 57S
Type 57 G 72mm 100mm 3257cc 8 16-2OHC 1N/A 230 2.98 m R 1936 "Sport racing car with chassis 57S and derived 57GR engine, tank body
The 1939 Le Mans tank had a type 57 chassis with a blown engine"
Type 57 GR 72mm 100mm 3257cc 8 16-2OHC 1 N/A 135 3.30 m S Sport version of type 57 called " Grand Raid "
Type 57 S 40 77mm 100mm 3986cc 8 16-2OHC 1 S/C 170 2.98 m S Project Grand sport car with chassis 57S and 50 B engine, 77 X 100 = 3986 cm3
Type 57 S 45 84mm 100mm 4433cc 8 16-2OHC 1 N/A 300 2.60 m R Racing sport car, chassis type 59 with 50 BII engine , tank body
Type 58 115mm 130mm 10802cc 8 - S/C - - - Railcar Diesel version of type 41, 8 cyl.115 x 130 = 10802 cm3 , Roots blower
Engine 125mm 130mm 12763cc 8 16 Steam Prototype for a steam engine intended for railcar 125 x 130 = 12763 cc , horizontal valves.
Type 59 72mm 88mm 2867cc 8 16-2OHC 2 S/C 200 2.60 m R 1933 1933 GP racing car, 8 cyl. 72 x 88 = 2866 cm3 , weelbase 2,60 m
Type 59 72mm 100mm 3257cc 8 16-2OHC 2 S/C 250 2.60 m R 1934 1934 version of type 59 with engine 72 x 100 = 3257 cm3
Type 60 86mm 88mm 4089cc 8 32-OHC 1 S/C - X 1934/36 Aero engine derived from type 52. 8 cyl with 4 valves, 86 x 88 = 4089 cm3
Type 61 - - - - - - - - - Luxury car, 8 cyl. 10 liters , 4 speeds transaxle ?
Type 62 - - - - - - - - - Gearbox for type 59 with dry sump
Type 63 - - - - - - - - - Prototype touring car with an Alpax chassis and type 57 engine ?
Type 63 S Prototype car with type 57 chassis and 50 S engine , or racing car for Le Mans 1936 ?
Type 64 72mm 100mm 3257cc 8 16-2OHC - - 3.30 m T 1939 "Tourism car with chassis Alpax , wheelbase 3,30 m , 8 cyl. derived from type 57 but with
chain driven camshafts"
Type 65 - - - - - - - - - Tourism car with chassis Alpax and IFS, type 64 engine ? wheelbase 3,30 m ?
Type 66 - - - - - - - X 1939 Transmission system with 2 50 BI engines for 100P aeroplane
Type 67 108mm 120mm 17589cc V16 64-2OHC 1S/C - X 1939 135° V16 aero engine with 4 valves , 108 x 120 = 17589 cm3 and 120 x 120 = 21715 cm3
Type 67B 120mm 120mm 21715cc V16 64-2OHC 1S/C As T67, but with 120 x 120 = 21715 cm3
Type 68 45mm 50mm 318cc 4 2OHC S/C - T 1940/45 DOHC blown 4 cyl. Engine with 4 valves, 45 x 50 = 318 cm3
Type 68 B 48.5mm 50mm 370cc 4 2OHC N/A - T 1947 Micro car, wheelbase 1,80 m, modified type 68 engine with 2 valves 48,5 x 50 = 369 cm3
Type 68 E 48.5mm 50mm 370cc 4 Experimental square 4 cyl. engine with rotative valve , 48,5 x 50 = 370 cm3
Type 69 - - - - - - - - - Pedal assisted SOHC monocylinder ( 25 or 50 cm3) with 2 valves actioned by curved tappets
Type 70 - - 16 - - - - - Hydraulic coupling of 4 type 68 engines ?
Type 71 - - - - - - - - - Marine engine 8 cyl. with 4 valves 140 x 150 = 18472 cm3 ? ( derived from type 41 ? )
Type 72 22mm 28mm 10.5cc 1 2 ST S/C - X 1943 Monocylinder DOHC with a Roots type blower, 2 valves, 22 x 28 = 10,6 cm3
Type 72 A like type 72 but 24 x 28 = 12,7 cm3
Type 72 B like 72A, but all the gearings for distribution and blower are in a carter on the right side of the engine
Type 73 70mm 95mm 1460cc 4 16-2OHC N/A - 2.60 m T 1947 "Tourism car with 4 cyl. DOHC 4 valves with 70° VIA and detachable head . Roots Blower
70 x 95 = 1460 cm3 , wheelbase 2,60 m"
Type 73 A 76mm 82mm 1489cc 4 12-1OHC S/C - T 1947 4 cyl. engine, only, 76 x 82 = 1488 cm3 , SOHC 3 valves, engine derived from type 46
Type 73 B ? 76mm 82mm 1489cc 4 8-2OHC - - R 1944 Like 73A but with a detachable head ?
Type 73 C 70mm 95mm 1460cc 2.40 m Racing car with type 73 engine and a bigger blower, wheelbase 2,40 m
Type 74 170mm 180mm 16342cc 4 - - - - - Steam engine 4 cyl., 170 x 180 = 16342 cm3
Type 75 60mm 60mm 170cc 1 3-OHC - - - - Marine engine monocylinder SOHC 3 valves, 60 x 60 = 170 cm3 for the "You-You" boat
Type 76 65mm 90mm 2390cc 8 - - - - - Truck engine, 8 cyl. 65 x 90 = 2390 cm3 ?
Type 77 - - - - - - - - - Transmission and reverse gear for 100 cv marine engine
Type 78 80mm 107mm 4302cc 8 32-2OHC S/C - T - Tourism car, 8 cyl.DOHC with 4 vertical valves 80 x 107 = 4302 cc , Roots blower
Type 79 - - - - - - - - - Transmission and reverse gear for 10 cv marine engine ( perhaps for type 75 ? )
Type 80 - - - - - - - - - Transmission system for 12 cylinders La Licorne marine engine
Type 101 72mm 100mm 3257cc 8 16-2OHC 1 N/A 135 3.30 m T 1951 Tourism car with modified type 57 chassis and engine
Type 101 C 72mm 100mm 3257cc 8 16-2OHC 1 S/C 190 3.30m T 1951 Like 101 but with a Roots blower
Type 102 72mm 95,5mm 1555cc 4 8-2OHC 1 N/A ~75 2.40 / 2.75 m X 1952 "Tourism and sport car with a tubular frame, 4 cyl. DOHC 72 x 95,5 = 1555 cm3, wheelbase 2,75 m
and 2,40 m for the Sport version"
Type 125 75mm 68.8mm 1216cc 4 8-2OHC? No ~75 2.30 m S 1955 Sport car, rear transversal 4 cyl. 75 x 68,8 = 1216 cm3 , wheelbase 2,30m
Type 251 75mm 68.8mm 2432cc 8 - - - 2.148 m R 1953/56 GP racing car, rear transversal 8 cyl. 75 x 68,8 = 2431 cm3, wheelbase 2,184 m
Type 252 78mm 78mm 1491cc 4 - - - 2.30 m S 1956 Prototype sport car, 4 cyl. 78 x 78 = 1491 cm3 , wheelbase 2,30 m
Type 253 80mm 78mm 1568cc 4 - - - 2.48 m S 1956 Improved (?) version of type 252 with IFS, 4 cyl.80 X 78 = 1568 cm3, wheelbase 2,48 m
Type 451 80mm 75mm 4463cc V12 - - - 2.75 m X 1959/63 "Sport car project with a V12 engine DOHC, 2 valves per cylinder 80 x 75 = 4463 cm3, tubular frame , wheelbase 2,75 m"

Type 31 hypothesis

Desirous to participate in the Indy 500 miles race of 1923, Martin de Alzaga, to the intigation of his friend Pierre de Viscaya, asked Ettore Bugatti, after the race of Monza, 2 Sept 1922, to build for him 3 cars derived from the 22/29 of the Strasbourg GP, but with various modifications because he knew that these cars will be inadequate for the brickyard.

These modifications were revealed by Martin de Alzaga, himself, in "Bugantics vol 41 n°3 , Autumn 1978". He said: " We had agreed, verbally, that our engines were to be 122 cu.in ( 2 liters ) with brand new inclined four-valve heads, and the cranckshaft mounted on ball bearings metal bearings only on the rods and of bigger diameter than the ones used in 1922 in Italie, and incidentally, only two speeds in the gearbox".

What came after this is perfectly known, de Alzaga only saw the cars on his arrival at the speedway on 20 May 1923. The modifications were not at the rendez-vous.

Conway told us that the cars were ordered on 8 January 1923, but de Alzaga had determined the great lines of what he wanted, with Ettore, near September 1922, after the race of Monza.

Now the question is : did Ettore begin the study of the new engine asked by de Viscaya ? If it was the case, had it a type number ? In this supposition, number 31 seems to be the most logical, isn't it ?
Chronologically, we know that the first drawings of type 30 frame are dated August 1922, we also know that the type 32 tank made its first appearance at Tours in July 1923 for the ACF GP, that means that the study of this very innovative chassis must have begun sufficiently early, certainly before the end of 1922.
Until now, all the bugatti types have known a realization or a beginning of it. The only realization between first type 30 drawings and type 32 was, until proof of the contrary, the cars that ran at Indy in May 1923.
My scenario, right or not, is the following: Ettore Bugatti, who was verbally engaged with Martin de Alzaga, give number 31 to the car, or its engine and gearbox, which must run at Indy ; nearly at the same time he began the study of the car he wants to engage at the ACF GP of July 1923, which he, naturally, named type 32.
This project, relatively revolutionary in comparison with all he had, precedently, realized, might have required much more time than foreseen. We must know, also, that during 1923 the type 33 project, still an innovative one was launched. In the same way, Bugatti had a contract with the French government to built 6 aeroengines called type 34 ( first patent on it is dated 10 August 1923 for FR 569676).

During this intensive period of activity, the Molsheim workshop had to start the production of the new type 30 cars, but also to secure the production of types 22 and 23 "Brescia modifié" which constituted the only incoming of money for the Bugatti factory. All these necessities made that the type 31 study was neglected and then abandoned. In fact this project had carry little weight in front of Ettore's personal projects, and in front of the necessities of a factory which might pass before the interests of a single customer.

Here is my (Sylvain Vezier's) vision of the type 31. Is that true or not ? I don't know, but until to day nobody was able to tell us what was really this type.

Now I hope someone, will be able to answer this question!


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