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

A heavy key chain may deactivate the airbags in your Chevy Cobalt or Pontiac G5

GM is recalling 788,000 Cobalt and Pontiac G5 sedans for a potentially deadly problem with the ignition system. When the vehicles' keys are connected to heavy key chains (or, say, key rings laden with a dozen extra keys), a sufficiently extreme jolt or impact could shift the ignition out of the "run" position and into the "off" position. Cuts electrical power to the vehicles' systems, in turn deactivating the airbags.

Alfa Romeo 4C Spider revealed: Geneva Motor Show

The Alfa Romeo 4C Spider (pictured) revealed in Geneva The Alfa Romeo 4C is the epitome of a modern ‘supercar’, with ultra light weight (for a production car) allowing the 4C to produce very good performance from its modest 17500cc engine. So producing an Spider convertible immediately raises the weight issue in a more dramatic way when the car’s abilities are so dependent on it low weight, but it seems the Alfa Romeo 4C Spider – previewed as a production car with a concept at Geneva today – has managed to keep the wight penalties of the convertible 4C down to a minimum. Thanks to a canvas roof and carbon fibre rollover bars, the weight penalty for the Spider is only about 60kg (around a 7 per cent gain) which shouldn’t hurt performance too much.

Nissan UK Battery plans confirmed

Nissan - the Renault Nissan Alliance - has confirmed plans for car battery production in the UK and Portugal The aim of the battery production plants is to supply batteries for electric cars built by the Renault Nissan alliance, but Nissan haven’t actually said that they will build any electric cars in the UK. Hmm. The target production is 60,000 annually to be used in a range of Nissan and Renault electric cars that will start to hit the market next year (2010) – in the US and Japan – with full global roll-out by 2010.