Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Petrolhead spiders cause Mazda recall

Mazda has had to recall 42,000 vehicles in the US after it emerged that a species of spider had been weaving webs in fuel vent hoses, increasing the risk of fuel leaks and fires. The yellow sac spider’s curious domestic activities cause a build-up of pressure in the evaporative fuel vent that – in theory at least – could result in a cracked fuel tank and therefore an increased risk of fire. This isn’t the first time that the Mazda 6 has received the unwanted advances of a gas-guzzling arachnid, either – three years ago Mazda had to recall over 50,000 cars for precisely the same reason.

Porsche 911 GT3 R Hybrid (2011) first official pictures

Porsche has released details of its updated 911 GT3 R Hybrid – the 2010 original nearly won last year's Nurburgring 24hr race before (ironically) it retired with petrol engine failure.  The 2011 Porsche 911 GT3 R Hybrid – the lowdown Before this report disappears in a chorus of ‘it looks the same as last year’s one’, let's outline where Porsche’s engineers have been busy. At the unfashionable end of the car remains a 4.0-litre flat-six engine producing approximately 470bhp. Up front are twin electric motors, now producing 75kW of power each (up from 60kW) and combined these give the GT3 R Hybrid a 197bhp electric boost, which can be programmed to activate automatically via the throttle pedal, or manually selected during overtaking. F1-derived hybrid tech for the 911 GT3 R Hybrid Power for the two electric motors doesn't come from batteries, but flywheel accumulator technology from Williams Hybrid Power, an offshoot of the Williams Formula 1 team. The flywheel, encased in a carbonfibre safety cell in the space where the passenger seat would be, spins at up to 40,000rpm and acts as a mechanical energy store for the electric motors. Regenerative braking feeds energy back into the flywheel system – no surprises there, as the technology is derived from Williams' exeprience with Kinetic Energy Recovery Systems (KERS) in F1.

VW’s big jump in profits shows the cost for ‘Premium’ badges

Volkswagen’s profits jumped by £5.7 billion to £25.5 billion with sales numbers up by one million. But the big profits come from ‘Premium’ badges. What’s in a name?