Lamborghini Gallardo LP560-4: New Gallardo V10 bends design rules

Secrets behind Lamborghini's latest projectile, the LP560-4

Lamborghini's faster, more powerful, 560bhp Gallardo, called LP560-4, doesn't just have a bigger 5.2-litre capacity and direct fuel injection. The entire engine is new. 'The old engine was at the limit of its power and capacity,' said technical director Maurizio Reggiani at Geneva. 'So we've used stratified direct injection to increase power, because it allows a higher compression ratio – up from 11.5 to 12.5 to one – and it improves efficiency, with CO2 reduced by 10 per cent. 'We also needed to increase the cylinder bore, which meant a new block with wider bore centres. And that meant we had to have a new, longer crankshaft.' Previously the crankshaft had split crankpins for opposite cylinders, to give even 72deg firing intervals with the 90deg vee-angle Lamborghini deems necessary to keep the centre of gravity low. The crankshaft design wasn't very rigid, though, causing vibration that the even firing intervals were meant to stop. This time, opposite cylinders share a common crankpin, like those of a typical V8, which means the firing intervals are either 90deg or 58deg apart. Combine that with a exhaust manifolds which, on each bank, have three-into-one, two-into-one and a single pipe joining the two-into-one downstream, and you have the recipe for a wholly different Gallardo sound. But does the new engine vibrate more? 'No,' says Reggiani, 'because the stiffer crankshaft makes up for the uneven firing.' A brief burst of action from the LP560-4 at a pre-show demo was accompanied by an almost Formula One-like explosion of noise, which was very promising.

Most Popular

All-electric Ferrari confirmed for 2025 reveal
Ferrari badge

All-electric Ferrari confirmed for 2025 reveal

Ferrari has confirmed its first EV, but first three new models are due in the coming months
15 Apr 2021
Jaguar XJ41 – Dead on arrival
Jaguar XJ41

Jaguar XJ41 – Dead on arrival

The blighted ’80s ‘F-type’, the demise of which led to the creation of the Jaguar XK8 and launched a new era for Aston Martin
8 Apr 2021
Peugeot 508 PSE 2021 review – high performance hybrid takes on S4 and M340i
Peugeot 508 PSE – front
Peugeot 508

Peugeot 508 PSE 2021 review – high performance hybrid takes on S4 and M340i

New 355bhp petrol-hybrid 508 from Peugeot Sport Engineered has Audi’s S4 licked
14 Apr 2021