Alfa Romeo Tipo 33

The Alfa Romeo Tipo 33 was a sports racing prototype raced by the Alfa Romeo works team between 1967 and 1977. These cars took part for Sport Cars World Championship, Nordic Challenge Cup, Interserie and CanAm series. A small number of road going cars were derived from it in 1967, called Alfa Romeo 33 Stradale.

Alfa Romeo Tipo 33

Alfa Romeo started development of Tipo 33 in early 1960s, first car being built in 1965. First version was sent to 1963 established
Autodelta to be finished and for additional changes. First car was using Alfa Romeo TZ2 straight-4 engine.Cite web|url=http://www.italiancar.net/pilot/ms054.htm|title= Autodelta - a history|accessdate=2007-05-09|work=italiancar.net] But soon Autodelta finished its 2.0 litre V8.The 2000 cc (122ci) Tipo 33 mid-engined prototype debuted on 12 March 1967 at the Belgian hillclimbing event at Fléron, with Teodoro Zeccoli winning. The first version was named as “periscope” because it had very characteristic air inlet.Cite web|url=http://www.myalfaromeo.com.au/default.asp?action=article&ID=17553|title=Alfa Romeo Australia | 1960-1970|accessdate=2007-05-09|work=myalfaromeo.com.au] It was powered by a 1995 cc (122ci) 90° V8 of 270 hp (201 kW), with a large-diameter tube frame. The original T33 proved unreliable and uncompetitive in the World Sportscar Championship, its best result a 5th at the Nürburgring 1000, co-driven by Zeccoli and Roberto Bussinello.

Alfa Romeo 33/2

Infobox Automobile


name = Alfa Romeo 33/2
aka =
manufacturer = Alfa Romeo
parent_company =
production = 1967-1968
class = Race car
platform =
layout = RMR layout
engine = 1995 cc V8
270 bhp @ 9600 rpm
2500 cc V8 315 bhp
transmission =
suspension =
weight = 580 kg (1278 lb)
designer = AutodeltaIn 1968, Alfa's subsidiary, Autodelta, created an evolution model called 33/2. A road version, dubbed Alfa Romeo 33 Stradale, was also introduced. At the 24 Hours of Daytona, the Porsche 907 with 2.2L engines were dominating the overall race, but Alfa took the 2-litre class win, with Udo Schütz and Nino Vaccarella,after that the car was named as "Daytona".Cite web|url=http://www.sportscarmarket.com/profiles/1995/November/Alfa%20Romeo/index.html|title=1968 Alfa Romeo Tipo 33/S Daytona|accessdate=2007-05-09|work=sportscarmarket.com] Win was repeated at the Targa Florio, where Nanni Galli and Ignazio Giunti also took second place overall, followed by teammates Lucien Bianchi and Mario Casoni. Galli and Giunti then won the class at the Nürburgring 1000km, where the 2.5L version finished for the first time, 4th place in the 3.0L class with Schütz and Bianchi. However, in most races, the Alfa drivers were outclassed by their Porsche rivals which used bigger engines. In 1968, the car was used mainly by privateers, winning its class in the 1000km Monza, Targa Florio and Nürburgring races. At the end of season 1968 Alfa Romeo finished third in the manufacturers championship.

Alfa Romeo 33/3

Infobox Automobile


name = Alfa Romeo 33/3
Alfa Romeo 33TT3
aka = Alfa Romeo
manufacturer = Alfa Romeo
production = 1967-1968
class = Race car
platform =
layout = RMR layout
engine = 2998 cc V8
400 bhp @ 9000 rpm
440 bhp @ 9800 rpm
transmission =
suspension =
steering =
brakes =
weight = 700 kg/650 kg (1971)
(1543 lb)/(1433 lb) (1971)
designer = AutodeltaIn 1969 at the 12 Hours of Sebring, the Alfa Romeo 33/3 made its debut. The engine was enlarged to 2998 cc (183ci) with 400 hp (298 kW), which put the 33/3 in the same class as the Porsche 908 and the Ferrari 312P. The chassis was now a monocoque. The Sebring race was very bad for the new car and Alfa did not take part in Le Mans because Bianchi died tragically in a crash during a practising session. The car took a couple of wins in smaller competitions but overall the 1969 season was not good, and the team was again third in the championship.

After a dismal 1969, in 1970, the bigger 5.0L Porsche 917 and Ferrari 512 dominated, yet Toine Hezemans and Masten Gregory took third overall at Sebring, and Andrea De Adamich and Henri Pescarolo won their class in the 1000km Zeltweg, finishing second overall. Also in 1970, an Alfa T 33/3 was one of the "actors" of Steve McQueen's movie "Le Mans", released in 1971.

In 1971, the Alfa Romeo racing effort was finally successful. Rolf Stommelen and Nanni Galli won their class at the 1000km Buenos Aires (followed by De Adamich and Pescarolo), before taking another class win (and second overall) at Sebring. De Adamich and Pescarolo later won outright at the 1000km Brands Hatch, a significant against the "invincible" 917s. They were then taking a class win at Monza (where Alfa Romeo took the three podium slots in the prototype class) and another one at Spa. At the Targa Florio, Vaccarella and Hezemans won outright, followed by teammates De Adamich and Gijs Van Lennep. Hezemans and Vaccarella won their class at Zeltweg, and De Adamich and Ronnie Peterson won overall at Watkins Glen. Season 1971 Alfa Romeo finished with second place in the championship.

1972 and 1973

In these years, the 5L sports car were banned. The 3L cars of Alfa, the Ferrari 312PB and the Matra challenged for outright victories now.

Alfa Romeo T33/4

A 4 litre version was entered to 1972 and 1974 CanAm series by Otto Zipper, driver was Scooter Patrick. Autodelta was also one of entrants with T33/4 in season 1974. T33/3 version was also used in CanAm series earlier.

Alfa Romeo 33TT12

Infobox Automobile


name = Alfa Romeo 33TT12
aka =
manufacturer = Alfa Romeo
production = 1973-1976
class = Race car
platform =
layout = RMR layout
engine = 2995 cc F12
500 bhp @ 11000 rpm
transmission =
suspension =
weight = 670 kg (1477 lb)
designer = Autodelta1973 was introduced 33 TT 12 ("Telaio Tubolare", tubular chassis) which had Carlo Chiti-designed 12 cylinder 3.0L flat engine (500 bhp). Season 1973 was more or less development time and in 1974 the car took win at Monza 1000 km and finished the season with second place in the championship. It wasn’t until 1975 when after years of trying Alfa Romeo won
sport cars world championship. The season was almost total domination, seven wins in eight races.Cite web|url=http://www.italiancar.net/pilot/ms054.htm|title= Autodelta - a history|accessdate=2007-05-09|work=italiancar.net] Winning drivers were: Arturo Merzario, Vittorio Brambilla, Jacques Laffite, Henri Pescarolo, Derek Bell and Jochen Mass. For 1976 Autodelta was concentrating other things and the car was rarely used in competitions.

Alfa Romeo 33SC12

Infobox Automobile


name = Alfa Romeo 33SC12
Alfa Romeo 33SC12 Turbo
manufacturer = Alfa Romeo
production = 1976-1977
class = Race car
platform =
layout = RMR layout
engine = 2993 cc F12
520 bhp @ 12000 rpm
2134 cc F12
640 bhp @ 11000 rpm
transmission =
suspension =
brakes =
weight = 720 kg (1587 lb)
designer = Autodelta

As a successor of the 33TT12 1976 appeared the 33SC12, SC referring for "SCatolato" a boxed chassis. 3.0 L flat-12 engine had now 520 bhp. With this car Alfa Romeo won again the sports car world championship in 1977. The SC12 won every race on that season, winning drivers were: Arturo Merzario, Jean-Pierre Jarier and Vittorio Brambilla. On the Salzburg ring the car reached an average speed of Auto kmh|203.82|1, on that same race was also tested 2134 cc turbocharged SC12 producing 640 bhpCite web|url=http://www.geocities.com/mundoalfa/1967_Alfa33.htm|title=Alfa Romeo 33 Sport Prototipo|accessdate=2007-05-09|work=geocities.com/mundoalfa Es icon] , Arturo Merzario finished second with that car. The SC12 Turbo was Alfa's first twin turbocharged V12-engine and it was introduced around same time as Renault's Formula One turbo engine. In Alfa Romeo engine both engine rows were fed with own turbocharger, that feature was followed by many racecar makers in the following years.Cite web|url=http://www.italiancar.net/pilot/ms054.htm|title= Autodelta - a history|accessdate=2007-05-09|work=italiancar.net]

The flat-12 engine was later used on Brabham-Alfa BT45, BT46 and Alfa Romeo 177 F1 cars.

Footnotes

External links

* [http://www.seriouswheels.com/abc/Alfa-Romeo-T33-f-1024x768.htm Alfa Romeo T33] , striking example for the use of Rosso Corsa
* [http://www.alfaromeo.com/ Alfa Website also with Racing with History ]
* [http://www.wspr-racing.com/wspr/results/wscc/ms1968.html World Sportscar Championship 1968 results]
* [http://wspr-racing.com/wspr/results/wscc/ms1977.html World Sportscar Championship 1977 results]
* [http://wspr-racing.com/wspr/results/wscc/ms1975.html World Sportscar Championship 1975 results]
* [http://www.imca-slotracing.com/2006-FG.htm 1972 Racing season Alfa vs. Ferrari ]
* [http://www.classicscars.com/wspr/results/canam/nf_canam_home.html Can-Am Championship results]