1957 Aston Martin DBR4
After a four year development program, Aston Martin launched the DBR4 in 1959. It was their first and only grand prix car.
The chassis and engine of the car were similar to that of the DB3S.
Aston Martin experienced a breif and unsuccessfull grand prix effort in 1959. It was short race season, with DBR4s appearing at every second grand prix race. Little success was achieved by the DBR4 or DBR5 with a revised 80 degree head. It is important to note that the companies’ first year in Grand Prix was developmental. Outright victory is rare for a newcomer.
With good talent behind the wheel, Aston Martin cancelled the single seater program in 1960. They did so to focus on their grand touring program.
In Detail
| submitted by | Richard Owen |
| engine | Twin Spark, Inline-6 |
| position | Front Longitudinal |
| aspiration | Natural |
| valvetrain | DOHC w/2 Valves per Cyl |
| displacement | 2493 cc / 152.1 in³ |
| bore | 83 mm / 3.27 in |
| stroke | 76.8 mm / 3.02 in |
| compression | 10.4:1 |
| power | 186.4 kw / 250.0 bhp @ 7800 rpm |
| specific output | 100.28 bhp per litre |
| bhp/weight | bhp per tonne |
| redline | 7250 |
| front tires | 5.50×16 |
| rear tires | 7.00×16 |
| front brakes | Unassisted Girling Discs |
| f brake size | x 318 mm / x 12.5 in |
| rear brakes | Unassisted Girling Discs |
| r brake size | x 292 mm / x 11.5 in |
| steering | Rack & Pinion |
| f suspension | Double Wishbones w/Coil Springs, Damper Untis |
| r suspension | De Dion Axle w/Trailing Arms, Torsion Bars |
| wheelbase | 2362 mm / 93.0 in |
| front track | 1308 mm / 51.5 in |
| rear track | 1308 mm / 51.5 in |
| transmission | David Brown CG537 5-Speed Manual |
| gear ratios | :1 |
