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

McLaren P1 gets 903bhp

McLaren has revealed that their new supercar – the McLaren P1 – will deliver 903bhp and have emissions below 200g/km. The McLaren P1 will get 727bhp from its 3.8 litre V8 with an additional 176bhp coming from an electric motor for a combined power delivery of 903bhp, with the V8 contributing 531lb/ft of torque and the electric motor an instant 192lb/ft for a combined torque of 664lb/ft at 4000rpm. The boost from the electric motor is instantly available at the flick of a button on the steering wheel – McLaren call it Instant Power Assist System (IPAS) – which instantly throws more additional power to aid the McLaren’s V8 than a pair of Fiestas can manage.

JaguarRSR XKR GT2 (2010) meets its forebears

By Tim Pollard First Official Pictures 04 February 2010 13:59 This is the moment Jaguar's new Le Mans 24hr racer met its famous ancestors. The JaguarRSR XKR GT2 will compete at La Sarthe in summer 2010 to mark Jaguar's 75th anniversary of Le Mans competition. Jaguar won seven times at Le Mans between 1951 and 1990, and 20 years later the British marque returns on 12 June.

BMW Z4 GT3 (2011) completes testing

BMW Motorsport has released pictures of its upgraded Z4 GT3 race car. The 2011 car has completed testing and is available for customer teams. BMW Z4 GT3: the lowdown The Z4 GT3 may look like a regular Z4 that's been attacked by a boy-racer with a carbonfibre and tea-tray rear wing fetish. But under the skin the Z4 GT3 ditches straight-six power for a 4.4-litre motorsport-tuned V8 engine, hooked up to a six-speed racing transmissionBMW Motorsport takes a regular Z4 coupe-cabriolet body shell, and removes the retractable hardtop, bonnet, bootlid, front and rear wings and the bumpers.