<Li> Power: 268 hp (200 kW; 272 PS) at 5,600 RPM </Li> <Li> Torque: 258 lb ft (350 N m; 36 kg m) at 2,000 - 5,200 RPM </Li> <P> (Japanese: Subaru FB engine) An entirely new generation of boxer engine announced on 23 September 2010 . By increasing piston stroke and decreasing piston bore, Subaru aimed to reduce emissions and improve fuel economy, while increasing and broadening torque output over the previous generation engine . </P> <P> The FB has an all new block and head featuring dual overhead cams with intake and exhaust variable valve timing (AVCS - Active Valve Control System), and a timing chain that replaced the timing belt . Moving to chain - driven cams is said to allow the valves to be placed at a more narrow angle to each other and shrink the bore of cylinder from 99.5 mm to 94 . It results in less unburned fuel during cold start, thereby reducing emissions . Subaru is able to maintain the exterior dimension substantially unchanged by asymmetrical connecting rods like those in EZ36 . The FB is only marginally heavier . In Jan 2011, Car and Driver was told direct injection would be added soon . </P>

When did subaru outback switch to timing chain