Specifications for other markets may differ.
The EJ20G engine had an air bypass valve to prevent the suction noise that can otherwise occur when the throttle valve is suddenly closed and causes a sudden rise in air pressure between the turbocharger and the throttle body.
Each camshaft was supported by three journals with three camshaft caps, while each camshaft flange was supported by a groove in the cylinder head to receive thrust force.
TD05 Turbocharger For the , the EJ20G engine had a water-cooled, Mitsubishi TD05 turbocharger; the rotational speed of the turbine ranged from approximately 20,000 rpm to 150,000 rpm and peak boost is understood to be around 11 to 12 psi.
The piston head was recessed for both the intake and exhaust valves, while the pistons had three rings: two pressure rings and an oil control ring.
Furthermore, engine coolant from the coolant drain hose under the engine cylinder head flowed to a coolant passage in the turbocharger bearing housing.