2008
In 2008, Caterham moved from the K-series to the Ford Sigma engine, supplied in a 1.6 litre format. The Caged chassis was modified to incorporate the new engine (such as the exhaust exiting on the right via a 4-branch system with separate catalytic converter), and a number of new parts were manufactured.
The current Academy package (2009) is that for £17,995, entrants get a modified Roadsport kit (although a factory-built option is available for extra cost) with a sealed Ford Sigma engine and 5-speed gearbox. Having completed the ARDS (racing) licence qualification, the season then consists of a setup day, three speed events (sprints and hillclimbs), and four circuit races.
In recent years there have been 2 Academy groups, each of 28 drivers. For 2009, there were plans to run 3 groups of 28 entrants, but ultimately this did not come to pass. 2010's Academy also has two groups.
Read more about this topic: Caterham Academy, Move To Sigma Engines