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The RA is a completely new 6.5-litre, naturally-aspirated V12 engine, commissioned by Adrian Newey, and co-designed, developed and produced by Cosworth, in partnership and collaboration with Aston Martin, for the Aston Martin Valkyrie hyper car. It is not directly related to the original AM V12 design.
The conversion was undertaken by Aston Martin Works Service with a total rebuild cost of around £220,000. The Tadek Marek 5.3 V8 engine was reworked to produce an estimated 482 bhp (359 kW; 489 PS), carrying the unique designation 580XR. The car retired from racing in 2007 and Atkinson sold it in 2008 for £122,500.
The 1969–1972 Aston Martin DBS V8 coupe/convertible was Aston Martin's first V8 model. This engine was an all-aluminium construction with double overhead camshafts and was used in several models up until 2000 when the Virage model was discontinued.
The V-12 should appear in the replacements for the DB11 and DBS but won’t be offered in the DBX or the forthcoming Vanquish and Valhalla mid-engined supercars.
For comparison, Cosworth’s last 3.0-litre V10 Formula One engine, the TJ2005, weighed 97 kg (214 lb) in 2005. If that V10 F1 race engine was scaled up to 6.5 litres, it would have weighed 210 kg (463 lb). Over 1,300 individual parts were manufactured for the Valkyrie's engine, with a total of 5,000 components making up the total product.
Several other engine changes were made, notably the removal of the calibrated "pop off valve" designed to limit turbo boost pressure, replaced by engine electronics. The rated life of the engine was 1,400 miles (2,300 km) between rebuilds. Engines were sent by the race teams to Cosworth for the rebuild.
By bringing engine production back to within Aston Martin, the promise was that Aston Martin would be able to produce small runs of higher performance variants' engines. [ 67 ] [ 68 ] This expanded engine capacity allowed the entry-level V8 Vantage sports car to enter production at the Gaydon factory in 2006, joining the DB9 and DB9 Volante.
Aston Martin DB5. Interior. The principal differences between the DB4 Series V and the DB5 are the all-aluminium engine, enlarged from 3.7 litres to 4.0 litres; a new ZF five-speed transmission which was more robust than the earlier David Brown unit (except for some of the first DB5s); [8] and three SU carburettors.