The Aston DB4 may be a grand tourer that was produced by Aston Martin from 1958 until 1963.
Technically the aston DB4 wasn’t a development of the DB Mark III it replaced. It had a platform instead of a tubular chassis with a replacement engine by Tadek Marek. The DB4’s design formed the idea for later Aston Martin models, like the DB4 GT Zagato, the Lagonda Rapide 4-door saloon.
DB4 Design :
The lightweight superleggera body was designed by Carrozzeria Touring in Milan, and its Continental looks caused a sensation on its unveiling at the 1958 London Motor Show. Although the planning and construction techniques were Italian, the DB4 was the primary Aston to be built at the company’s Newport Pagnell works in Buckinghamshire, England.
DB4 specifications :
The 3.7 L (3670 cc/223 in³) engine, designed by Tadek Marek a Polish born racer , has double overhead cam straight-6, with plate and block of cast R.R.50 aluminium alloy, an extra development of the sooner engine.
The engine was susceptible to overheating initially, but the 240 hp (179 kW) produced by the twin-SU carburettor version made buyers forgive this unfortunate trait.
Servo-assisted disc brakes were fitted all round: early 11.5 in (292 mm) Dunlops were replaced by Girlings. Initially the DB4 fitted 16″ wheels with 600H16 Avon TurboSpeed crossply tyres, or 185VR16 Pirelli Cinturato CA67 because the radial option.
In 1962 they moved onto 15″ wheels with 6.70V15 Avon TurboSpeed with the upgrade option of 185VR15 Pirelli Cinturato radials. The independent front suspension used ball-jointed wishbones, coil springs and rack-and-pinion steering.
The live rear axle also used coil springs and was located by a Watt’s linkage. the traditional final-drive ratio for British and European use was 3.54:1: within us the ratio was usually 3.77. Customers wanting a car with an especially high top speed could choose a 3.31:1 ratio.
Performance of DB4 :
A car with British standard 3.54 final drive ratio tested by The Motor magazine in 1960 had a top speed of 139.3 mph (224.2 km/h) and will accelerate from 0-60 mph (97 km/h) in 9.3 seconds. A fuel consumption of 17.7 miles per gallon (16.0 L/100 km; 14.7 mpg‑US) was recorded. The test car cost £3967 including its taxes
There were five “series” of DB4. the foremost visible changes were the addition of window frames serial II and therefore the adoption of a barred (rather than eggcrate) grille serial IV.
The Series III cars differed from the sooner ones in having taillights consisting of three small lamps mounted on a chrome backing plate.
Earlier cars have single-piece units and therefore the last Series V cars of September 1962 have similar taillights but recessed. The Series V also features a taller and longer body to supply more interior space, though the diameter of the wheels was reduced to stay the general height an equivalent .
The front of the Series V usually was of the more aerodynamic style as already used on the Vantage and GT models, a method that was later carried over to the DB5 cars
2-Aston DB4 Convertible:
A convertible was introduced in October 1961. It featured in-house styling almost like the Touring saloon, and a particularly rare factory hardtop was also available. In total, 70 DB4 convertibles were made up of a complete DB4 production run of 1,110 cars. 30 of those were Series IV, with the remaining 40 belonging to the Series V. 32 of the entire convertibles built (11 and 21 of the various series respectively) were equipped with the more powerful Vantage engine. Top speed for the regular version is about 136 mph.
3- Aston DB4 GT
The DB4 GT was a special lightweight, high-performance version of the DB4. Introduced in September 1959, it featured enclosed headlights and a thinner aluminium skin for lighter weight. The wheelbase was also reduced as compared to the quality car, which resulted in many cars not being fitted with rear seats.
Seventy-five GTs were built with this body style. Nineteen more were modified by the Zagato works in Italy into Aston DB4 GT Zagatos, with plain oval grilles, Borrani wire wheels and a smoothed out buttocks without the stock GT’s tail fins. one car was styled by Bertone and dubbed the Bertone Jet.
4- Aston DB4 GT Continuation:
In 2016 Aston Martin Works announced that an extra twenty-five track-only cars supported the 1959 lightweight specification would be manufactured at its Newport Pagnell plant, with delivery expected in late 2017.
5- Aston DB4 Vantage
With the introduction of the Series IV in 1961, a high-performance DB4 Vantage was offered. It featured three SU carbs and special cylinder heads, increasing power to 266 hp (198 kW). Most Vantage models used the enclosed headlights of the Aston DB4 GT. In all, there have been 136 saloons and 32 convertibles with the Vantage engine.
6- Vantage GT
A tiny number of non-GT DB4s used the GT’s more-powerful engine. this mix is usually called a Vantage GT, though not all included the Vantage package and none was technically a GT. Three Series III, five Series IV, and 6 Series V cars have this unusual combination of body and engine for a complete of 14.