The pistons had internal cooling channels, while oil jets in the crankcase sprayed the underside of the pistons.
Furthermore, cooling slits between the cylinder bores provided water cooling channels.
For the EE20 engine, the injectors were positioned at an almost 90 degree angle to the cylinder and were 40-50 mm shorter than those used in inline four-cylinder diesel engines.
Introduction Subaru's EE20 engine was a 2.
IHI turbocharger The EE20 engines have IHI turbochargers with variable nozzle turbines VNTs.