2012 Polaris Pro 800 Ignition Spark Coils Coil on 2040-parts.com

Awesome video of Porsche engine teardown

If you’re considering tearing down the 3.2-liter air-cooled flat-six in your 1984-1989 Porsche 911 , this stop-motion video should help motivate you. Skipping past all the stuck fasteners, broken parts and most of the unpleasant discoveries you’ll encounter when pulling any old engine apart has a way of making a full teardown seem downright manageable. But, whether you have an old 911 or not, this video is mighty entertaining and definitely worth a look.

BMW Concept X4 (2013) first pictures of baby X6 coupe-SUV

This is the BMW Concept X4, which borrows the idea of an SUV with coupe proportions from its X6 brother, and shrinks the template down to the size of an X3. But don't be fooled by the 'Concept' tag of this car – like the Concept 4-series coupe we saw in 2012, the X4 is very much confirmed for production, and will receive only detail styling tweaks before it goes on sale in mid-2014. It'll be built alongside the X3, X5 and X6 models at BMW's Spartanburg factory in the USA from early 2014.

Zagato TZ3 Stradale pays tribute to Alfa Romeo with Dodge

Styling house Zagato's tribute to the 100th anniversary of Alfa Romeo began with the release of its one-off TZ3 Corsa in 2009 and will end with the unveiling of its version of theTZ3 Stradale this year. Less than a month after we learned that Zagato was working on its new TZ3 Stradale, the company has released the first photos and details of the car alongside its Corsa cousin. While the TZ3 Corsa was more of a track car, the TZ3 Stradale is an avant-garde tribute to the Alfa Romeo and Zagato's street-legal heritage.