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Alfa Romeo GTA
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Alfa Romeo GTA
The Alfa Romeo GTA is a coupé manufactured by Italian automaker Alfa Romeo from 1965 to 1971, in both racing ("Corsa") and road ("Stradale") versions.
In 1962, the successor for the popular Alfa Romeo Giulietta was introduced. This car was the Giulia, internally called the Tipo 105. The 105 coupé used the shortened floor pan from the Giulia Berlina and was designed by Bertone. The name of the car evolved from the Giulia Sprint GT to the Giulia Sprint, and then to the GTJ (Junior) and GTV (Veloce) in the late 1960s.
At the time, Alfa Romeo was very active in auto racing. Autodelta, the racing division of Alfa, developed a car for competition that closely resembled the roadgoing model. These cars were named GTA, the added "A" standing for "Alleggerita", Italian for lightweight. The GTA was first produced in 1965 with a 1.6 L (1,570 cc) engine, with a 1300 Junior version being introduced later on. The GTA automobiles were available in either street (Stradale) or pure race (Corsa) trims.
The GTA had aluminium outer body panels instead of steel, and the steel inner panels were also made thinner; the inner and outer panels were bonded and pop-riveted together. Other weight reduction measures included magnesium alloy wheels, clear plastic side windows, aluminium upper control arms for the rear suspension, a magnesium valve cover, sump, timing cover and bell housing, different door handles and quarter window mechanisms, and lightweight interior trim. The GTA 1600 did not have a brake booster and had a thicker radiator than the standard vehicle; its dry weight was approximately 1,640 pounds (740 kg).
The engine had a new twin-ignition cylinder head (first called "twin plug", and then "Twin Spark" later in the 1980s) with a Marelli distributor from a Ferrari Dino and a 2-barrel 45 mm Weber carburetor instead of a 40 mm unit. The transmission gear ratios were closer than standard, and the gears themselves were machined for lightness and quicker shifting. In Stradale form, this car boasted approximately 115 PS (85 kW; 113 hp), up from 106 PS (78 kW; 105 hp), and a maximum torque of 142 N⋅m (105 lb⋅ft; 14 kg⋅m) at 3,000 rpm. In full race form, this engine could produce up to 170 PS (130 kW; 170 hp).
For homologation, 500 cars were made for racing and road use.
According to Maurizio Tabucchi (an author of books on Alfa Romeo, consultant at Italian Vintage Automobile Association and at Alfa Romeo Italian Register), the GTA 2000 was a test mule for the GTAm engine (see below). The GTAm engine, using Lucas injection, developed 208 bhp (155 kW) at 6,500 rpm and was fitted to a GTA 1300 Junior chassis. Tabucchi states that the first outing of these cars was at the Tour de Corse from November 8–9, 1969. Wheels were 14x7 with Michelin PA2 or TA3 tires. The cars were entered by Autodelta and driven by Pinto and Santonacci, with their cars suffering a puncture and suspension breakage at Guitera. The other team was Barayller and Fayel, with their cars suffering clutch failure.
Tony Adriaensens also reported GTA 2000 race results, albeit later:
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Alfa Romeo GTA
The Alfa Romeo GTA is a coupé manufactured by Italian automaker Alfa Romeo from 1965 to 1971, in both racing ("Corsa") and road ("Stradale") versions.
In 1962, the successor for the popular Alfa Romeo Giulietta was introduced. This car was the Giulia, internally called the Tipo 105. The 105 coupé used the shortened floor pan from the Giulia Berlina and was designed by Bertone. The name of the car evolved from the Giulia Sprint GT to the Giulia Sprint, and then to the GTJ (Junior) and GTV (Veloce) in the late 1960s.
At the time, Alfa Romeo was very active in auto racing. Autodelta, the racing division of Alfa, developed a car for competition that closely resembled the roadgoing model. These cars were named GTA, the added "A" standing for "Alleggerita", Italian for lightweight. The GTA was first produced in 1965 with a 1.6 L (1,570 cc) engine, with a 1300 Junior version being introduced later on. The GTA automobiles were available in either street (Stradale) or pure race (Corsa) trims.
The GTA had aluminium outer body panels instead of steel, and the steel inner panels were also made thinner; the inner and outer panels were bonded and pop-riveted together. Other weight reduction measures included magnesium alloy wheels, clear plastic side windows, aluminium upper control arms for the rear suspension, a magnesium valve cover, sump, timing cover and bell housing, different door handles and quarter window mechanisms, and lightweight interior trim. The GTA 1600 did not have a brake booster and had a thicker radiator than the standard vehicle; its dry weight was approximately 1,640 pounds (740 kg).
The engine had a new twin-ignition cylinder head (first called "twin plug", and then "Twin Spark" later in the 1980s) with a Marelli distributor from a Ferrari Dino and a 2-barrel 45 mm Weber carburetor instead of a 40 mm unit. The transmission gear ratios were closer than standard, and the gears themselves were machined for lightness and quicker shifting. In Stradale form, this car boasted approximately 115 PS (85 kW; 113 hp), up from 106 PS (78 kW; 105 hp), and a maximum torque of 142 N⋅m (105 lb⋅ft; 14 kg⋅m) at 3,000 rpm. In full race form, this engine could produce up to 170 PS (130 kW; 170 hp).
For homologation, 500 cars were made for racing and road use.
According to Maurizio Tabucchi (an author of books on Alfa Romeo, consultant at Italian Vintage Automobile Association and at Alfa Romeo Italian Register), the GTA 2000 was a test mule for the GTAm engine (see below). The GTAm engine, using Lucas injection, developed 208 bhp (155 kW) at 6,500 rpm and was fitted to a GTA 1300 Junior chassis. Tabucchi states that the first outing of these cars was at the Tour de Corse from November 8–9, 1969. Wheels were 14x7 with Michelin PA2 or TA3 tires. The cars were entered by Autodelta and driven by Pinto and Santonacci, with their cars suffering a puncture and suspension breakage at Guitera. The other team was Barayller and Fayel, with their cars suffering clutch failure.
Tony Adriaensens also reported GTA 2000 race results, albeit later:
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