The new EZ36D system got a die-shed aluminium cylinder block with 92

EZ36 cut off

0 mm bores and you can an excellent 91.0 mm coronary arrest having a capabilities out of 3630 cc. Towards the EZ36D, sintered iron pieces inside tube cut-off regulated thermal expansion of journal clearances during loving-up; predicated on Subaru, the latest iron parts including treated shocks to the crankshaft magazines and you may reduced overall vibration. This new EZ36D motor got cast-iron tube liners that were step one.5 mm thick (than the dos.0 mm regarding the EZ30R).

In line with the newest EZ30R, the distance within bores into the EZ36D motor was smaller by the 6.4 mm such that the length of the brand new crankcase are intact. Additionally, faster and you may asymmetrically slanted hooking up rods were utilized to maintain the new same width.


Brand new EZ36D system was equipped with Subaru’s ‘Dual Energetic Device Manage System’ (Dual AVCS) and that controlled both intake and you may exhaust camshafts. Procedure of your Twin AVCS could be summarised below:

  • The fresh new consumption camshaft you certainly will get better up to 51 levels from its earliest means. To succeed, the camshaft rotated in identical assistance as the motor run (clockwise when seen on the side of motor). If the intake camshaft try cutting-edge, it greeting significantly more heavens and stamina to get in the brand new cylinder for deeper stamina; and you may,
  • The new fatigue camshaft you’ll retard to 21 degrees from its earliest lazy setting. In order to retard, it turned on opposite assistance off motor rotation (counter-clockwise whenever seen from the front of one’s engine). In the event the fatigue camshaft is actually retarded, it acceptance new increasing fumes of your own fuel heart attack to operate a vehicle with the piston for a bit longer of energy getting best stamina overall performance.

By modifying consumption and you will deplete valve time, Dual AVCS let most readily useful scavenging of your cylinders, smaller working loss and you can increased deplete gasoline recirculation (EGR).

To have Dual AVCS, the camshaft strings sprocket and you can an internal rotor that has been attached for the camshaft you will flow separately of every other. Whenever oils stress was utilized to at least one region of the rotor, new camshaft create switch to modify device timing. To own system initiate-up-and falter-safe procedure, each interior rotor got good lock pin that was spring-loaded to keep the interior rotor closed towards strings sprocket. If the ECM tried to modify device timing, the brand new secure pin was forced for the rotor with oil tension throughout the oils control device (OCV) in addition to lock pin was launched regarding strings sprocket.

Injection and you will ignition

The EZ36D engine had sequential, multipoint power treatment, no matter if injector move cost were enhanced relative to the fresh EZ30R. Furthermore, the brand new EZ36D engine had just one ignition coil for every tube (we.elizabeth. ‘coil-on-plug’) albeit with ‘high-energy discharge’ ignite plugs to own improved ignition abilities.

As EZ36D motor put a modified burning chamber build for more efficient burning, its compressing ratio was paid off so you can 10.5:step one (compared to ten.7:step one toward EZ30). Dual knock detectors permitted the fresh ECU to adjust ignition timing within the reaction to combustion looks views.


Versus EZ30, the new cooling system for the EZ36 motor try converted to an excellent parallel-move construction. The fresh new synchronous-flow build utilised a liquid ber in the engine cut off one anticipate coolant so you can move to and you can over the cylinders really – as opposed to streaming from tube in order to tube – also to proceed through the new tube minds additionally.

Brand new parallel-move cooling system hit a lot more actually motor coolant temperature and reduced combustion temperature from the 31-fifty amounts Celsius to own a 1 education Celsius upsurge in brand new bump restriction – that it increased reduced so you can mid assortment torque and you can allowed safer procedure on the straight down RON electricity. In addition, ignition time would-be complex because the cold temperature did not bring system knock.