Background
There are some clever garden shed engineers who enjoy making twin cylinder motorcycle engines out of two singles, but few of them have the facilities necessary to build a V12 from two V6s. Luckily motor manufacturing behemoth Ford has quite a big shed, several in fact, so using the guts of two Duratec V6s the American company was able to come up with a super-smooth, powerful and reliable V12, suitable to power a gentleman’s GT.
Designed by Ian Callum and Henrik Fisker, the Aston Martin DB9 was first unveiled at the 2003 Frankfurt Motor Show as the successor to the fantastically popular DB7. Crucially, the DB9 was the first Aston model to be built at the then-new facility in Gaydon, Warwickshire, with plans to build between 1400 and 1500 cars per year.
Powered by a 6-litre, naturally-aspirated V12, a development of the 5.9-litre, 48-valve, V12 engine found in the DB7 Vantage, which produced 470bhp, an output sufficient to propel the aerodynamic coupé to a top speed of 305km/h.
The aluminium engine is mounted as far back as possible in the chassis while the transmission/final drive is positioned ahead of the rear axle, resulting in 85% of the car's mass being sited between the axles and a perfect 50/50 front/rear weight distribution. Coupled to either a six-speed manual or six-speed semi-automatic Touchtronic transmission, the V12 DB9 was designed for long-distance cruising, and available in either a coupé or convertible body, with the latter being named the Volante.
In terms of figures, the 6-litre V12 (shared with the V12 Vantage of the era) produced 450bhp at 6000rpm and a had a maximum torque output of 420 lb-ft at 5000 rpm, allowing the car to spring from 0-60 in just 4.7 seconds, and on to a top speed of 186mph. Take that, Mr Blofeld.
All that power’s no good if you can’t keep the engine on song though, so Aston fitted a 6-speed ZF 6HP26 autobox to keep the V12 firmly within its power band. It’s the ideal accompaniment to the lusty powerhouse of an engine, and makes acceleration seamless and violent at the same time. Of course, you can choose the ratios manually using the steering wheel mounted paddles or, if you’re feeling lazy, let the electronics make the shifts for you.







