The new EZ36D engine got a pass away-cast aluminium cylinder cut off which have 92

The new EZ36D engine got a pass away-cast aluminium cylinder cut off which have 92

EZ36 block

0 mm bores and you will good 91.0 mm coronary attack for a capability away from 3630 cc. To the EZ36D, sintered metal pieces in this cylinder cut-off controlled thermal expansion off record clearances through the warm-up; based on Subaru, the latest metal parts in addition to treated shocks to the crankshaft guides and you will reduced overall oscillations. The latest EZ36D engine had cast iron cylinder liners that were step one.5 mm thick (compared to the 2.0 mm in the EZ30R).

In accordance with the fresh EZ30R, the exact distance between your bores on the EZ36D system are reduced of the six.cuatro mm such that the length of the latest crankcase is actually unchanged. Furthermore, shorter and you can asymmetrically slanted hooking up rods were used to maintain the fresh exact same depth.


This new EZ36D motor are armed with Subaru’s ‘Dual Energetic Device Handle System’ (Twin AVCS) and this managed the » alt= »kenyancupid Log in »> intake and deplete camshafts. Process of your Twin AVCS could be summarised the following:

  • The newest intake camshaft you certainly will advance around 51 level from its earliest mode. To progress, the new camshaft rotated in the same assistance because the engine run (clockwise whenever seen in the top of your system). If the intake camshaft are advanced, it greeting so much more sky and you may energy to enter the latest tube getting better power; and you can,
  • The newest exhaust camshaft could retard as much as 21 grade from the earliest idle form. In order to retard, they rotated regarding opposite recommendations out of motor rotation (counter-clockwise whenever seen regarding top of your engine). If the exhaust camshaft was retarded, it anticipate the fresh expanding smoke of one’s strength coronary arrest to push into the piston for a bit longer of your energy to possess better electricity abilities.

Of the modifying consumption and you can exhaust valve timing, Twin AVCS allowed best scavenging of the cylinders, quicker putting loss and you may improved exhaust fuel recirculation (EGR).

For Dual AVCS, the fresh camshaft strings sprocket and an inner rotor which had been attached for the camshaft you certainly will flow independently of every other. When oils tension was applied to at least one side of the rotor, new camshaft carry out change to modify device timing. Having system initiate-up-and fail-safe procedure, for each and every interior rotor had an excellent lock pin that was spring loaded to store the inner rotor locked toward strings sprocket. If the ECM sought to modify valve time, the latest secure pin was pushed on the rotor with oil stress regarding the petroleum manage device (OCV) in addition to lock pin premiered on chain sprocket.

Treatment and you may ignition

This new EZ36D motor got sequential, multipoint power injections, regardless of if injector flow cost was in fact increased in line with the fresh EZ30R. Furthermore, the latest EZ36D motor had just one ignition coil for each and every cylinder (i.elizabeth. ‘coil-on-plug’) albeit that have ‘high energy discharge’ ignite plugs getting improved ignition overall performance.

Because the EZ36D system put a changed combustion chamber construction to possess more efficient combustion, their compression proportion is actually lower so you can 10.5:1 (versus ten.7:step one into the EZ30). Twin bump sensors allowed the newest ECU to regulate ignition timing for the reaction to combustion music viewpoints.


Versus EZ30, this new coolant system towards the EZ36 motor is converted to an effective parallel-move framework. The brand new synchronous-circulate design utilised a liquid ber from the engine block one anticipate coolant in order to move so you’re able to and you will along the cylinders physically – as opposed to flowing regarding tube to cylinder – and undergo the fresh tube brains simultaneously.

The brand new synchronous-disperse cooling system attained significantly more also engine coolant heat and less combustion heat by 31-50 level Celsius for a 1 knowledge Celsius rise in the newest bump restrict – so it enhanced reasonable to mid assortment torque and you can allowed secure operation with the all the way down RON power. In addition, ignition timing would-be cutting-edge as the cooler temperature did not provide motor bump.