ALFA Grand Prix

ALFA 40/60 GP
Overview
Manufacturer ALFA
Also called ALFA GP
Production 1914 (1921)
Assembly Italy
Designer Giuseppe Merosi
Body and chassis
Class Racing car
Body style 2-seater open wheeler
Powertrain
Engine 4.5 L straight four twin overhead cam
Dimensions
Curb weight 870 kg (1,920 lb)

ALFA 40/60 GP or GP (Grand Prix) was a fully working early racing car prototype made by the company now called Alfa Romeo. Only one example was built in 1914, which was later modified in 1921. This was creation of Giuseppe Merosi and was first Alfa Romeo DOHC engine. It had also four valves per cylinder, 90 degree valve angle and twin spark ignition. Usually Alfa Romeo DOHC engines are thought to be Vittorio Jano's creations but the first one was Merosi's GP car. This kind of engine architecture was very new for the time, originating from 1912/1913 Peugeot designed by Swiss engineer Ernest Henry. The history of this engine architecture is unclear, but other cars with dual overhead camshafts in the era were made by Sunbeam, Delage and Humber. This 1914 GP car was intended to take part in French Grand Prix of that year, but for reasons unknown this never happened. In 1921 Giuseppe Campari took part in the Gentlemen G.P. in Brescia with the modified GP car, but was forced to retire due to a leaking radiator.[1]

The GP engine had a displacement of 4.5 litres (4490 cc) and produced 88 bhp (66 kW) at 2950 rpm and after modifications in 1921 102 bhp (76 kW) at 3000 rpm. The top speed of this car was 88-93 mph (140–149 km/h). It wasn't until the 1920s when these DOHC engines came to Alfa road cars like the Alfa Romeo 6C.

Notes

  1. ↑ "The Grand Prix from 1914". alfaromeo.com.au. Archived from the original on 2007-02-19. Retrieved 2007-04-26.

References

Alfa Romeo car timeline, 1910s–1940s — next »
Type 1910s 1920s 1930s 1940s
0123456789 0123456789 0123456789 0123456789
4-cyl. 12 HP/15 HP 15-20 HP WWI [α] WWII
24 HP RM
20-30 HP [α] 20-30 ES
40-60 HP
6-cyl. G1
RL
6C 1500/1750/1900 6C 2300 6C 2500
8-cyl. 8C 2300 8C 2900
Grand Prix car GP P1 P2 Tipo A Tipo B (P3) 8C 35 158 158
308
Bi
motore		 12C 312 512
316 162
[α] 105 A.L.F.A 15-20 HP and 20-30 HP started in 1915 were completed in 1920, after the war, as Alfa Romeo models.
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