Concernant le Closed Deck, le Semi-Closed Deck et le Open Deck.
En gros, un moteur semi-closed et closed sont renforcé par rapport au open deck.
Open deck:
Semi-closed deck:
Closed deck:
Vous comprendrez qu'on parle d' "ovalisation des cylindres" quand ont pousse une GT2000 qui a un open deck, par rapport a une Legacy qui a un closed deck
==EJ20 Turbocharged==
All engines listed below were installed with a turbo and an [[intercooler]]
===EJ20T===
This is not actually a valid code from Subaru, but is mostly used by enthusiasts and also mechanics to describe the entire line of 2.0 litre [[turbocharged]] engines that have been available over time. The practice began with the incorrect designation of the USA-spec turbo, commonly referred to as the EJ22T, and the habit of referring to any turbocharged engine as a "T" began. When referring to the EJ20T, one is speaking of one of the following:
====EJ20G====
EJ20G engines fall in to 3 categories:
''Rocker-style HLA EJ20G usage:''
* [[Subaru Legacy|Legacy]] RS 89-93
* [[Subaru Legacy|Legacy]] RS-RA 89-93
* [[Subaru Legacy|Legacy]] GT 89-93
Power output ranges from 200 PS @ 6000 rpm and 260 Nm for the GT to 220 PS @ 6400 rpm and 270 Nm for the RS versions.
Engines can be identified by coil on plug with 2 M6 bolts per coil and valve covers with 4CAM 16VALVE and horizontal lines above and below the plug holes. All these engines have the air-to-water intercooler setup (chargecooler) and Oil squirters.
''Bucket-style HLA EJ20G usage:''
* [[Subaru Impreza WRX|Impreza WRX]] 92~96
* [[Subaru Impreza WRX|Impreza WRX]] Wagon 92~96
* [[Subaru Impreza WRX STI|Impreza WRX STI]] 93~96
* EUDM Subaru Impreza Turbo 94~96
Power output ranges from 220 PS @ 6000 rpm and 260 Nm for the WRX Wagons to 275 PS @ 6500 rpm and 319 Nm for the WRX STI Version II.
Engines can be identified by coil on plug with 1 M8 bolt per coil and valve covers with 4CAM 16VALVE and horizontal lines above the plug holes. Generally these engines all have the slanted intercooler. Some engines may not have HLA buckets but solid buckets with shims underneath. These engines also feature lighter valves, the intake valves are marked INKO and the exhaust valves are marked EXKO. The standard HLA valves are I252 and E283 respectively. All WRX Wagon engines and automatic sedan engines came with a TD04 with 90 deg elbow, all manual WRX sedans including STI versions all had a TD05 with 90 deg elbow.
''Shim-over-bucket style EJ20G usage:''
* [[Subaru Impreza WRX|Impreza WRX]] AT 97~98
* [[Subaru Impreza WRX|Impreza WRX]] AT Wagon 97~98
* JDM Forester Turbo 97~98
* EUDM Subaru Impreza Turbo 97~98
Power output is 250 PS @ 6000 rpm for the Japanese versions and 211 PS for the European model.
Engines can be identified by smooth valve covers, plug leads and a wasted spark coil in the middle of the intake manifold. These engines were available with both manual and automatic transmission in Japan, but generally had manual tranmissions in Europe in the Impreza Turbo.
====EJ20K====
to identify an EJ20K
*Wasted spark coil pack on center of manifold
*Inlet under manifold
*Divorced idle air controller
Usage:
*[[Subaru Impreza WRX|Impreza WRX]] & [[Subaru Impreza WRX STI|STi]] 9/96~9/98
====EJ205====
This engine series is used for '''non-Japanese''' marketed WRX models in the world market as of 1999. The Japanese WRX models use the EJ207 from 1999~2001, except the 5-door wagon which also uses the EJ205. After 2001, all WRXs use the EJ205, with an exception of the USDM models, which used the EJ205 until 2005. The EJ205 has a 8:1 compression ratio.
to identify an EJ205:
*Coil on plug*
*idle air integrated into throttle body
*open deck block
Usage:
[[Subaru Impreza WRX|Impreza WRX]]
* 99~01 (JDM Wagon Body only)
* 01~current (all JDM)including Forester Cross Sports and STI (9:1 compression ratio)
* 02~05 (USDM)
* 99~current (all other markets)
NOTE: The Australian Spec MY00 EJ205 does not have coil on plug but can be identified from the VIN of the vehicle (if known)where the 10th digit will be Y (for year 2000) and the 6th Digit will be 8 (for the 2000yr/EJ205)
====EJ207====
The EJ207 has a 8.0:1 compression ratio.
to identify an 9/99-9/2000 EJ207
*Wasted spark coil pack off center of manifold
*Inlet under manifold
*Red intake manifold
*Semi-closed deck block
Usage:
* [[Subaru Impreza WRX STI|Impreza WRX STi]] 1998~present (JDM, specifically Homologation models for [[World Rally Championship]])
[[Image:Subaru EJ20TT.jpg|thumb|2.0L Quad Cam Twin-turbo from JDM 1996 Subaru Legacy GT]]
===EJ20TT===
This can refer to one of the 2.0 Litre [[DOHC]] [[Twin-turbo#Sequential twin-turbo|Sequential Twin Turbo]] and [[Intercooler|intercooled]] engines (EJ20H/EJ20R/EJ206/EJ208), yet like EJ20T, it is not actually a valid code used by Subaru themselves. Used from 1994-2005 in various iterations listed below. Due to the tight confines of the engine bay, the twin turbo engine was installed in Japanese-spec Legacies only, which were right-hand drive. A detuned version was sold in Australia<ref>{{cite web|author=Russell Williamson |url=http://www.carpoint.com.au/reviews/2002 ... 22003-4204 |title=Subaru Liberty B4 (2002-2003) – Car Reviews, News & Advice - CarPoint Australia |publisher=Carpoint.com.au |date= |accessdate=2010-12-21}}</ref>. Twin turbo vehicles can be found as grey market imports to countries that utilize right hand drive.
====EJ20H====
Usage:
* 1993-1998 [[Subaru Legacy (second generation)|Legacy]] chassis code BD/BG5 [[Japan Domestic Market|JDM]] RS, RS-B and GT's ( {{convert|183|kW|PS bhp|0|abbr=on}} manual & automatic) and auto RS-B and GT-B's ({{convert|206|kW|PS bhp|0|abbr=on}} automatic)
====EJ20R====
Usage:
* 1996-1998 [[Subaru Legacy (second generation)|Legacy]] chassis code BD/BG5 [[Japan Domestic Market|JDM]] manual RS-B and GT-B's ({{convert|206|kW|PS bhp|0|abbr=on}} Manual)
====EJ206====
Usage:
* 1998-2003 [[Subaru Legacy (third generation)|Legacy]] chassis code BE/BH5 [[Japan Domestic Market|JDM]] GT's, GT-B's and B4's ({{convert|185|kW|PS bhp|0|abbr=on}} Auto)
====EJ208====
Usage:
* 1998-2003 [[Subaru Legacy (third generation)|Legacy]] chassis code BE/BH5 [[Japan Domestic Market|JDM]] GT's, GT-B's and B4's ({{convert|206|kW|PS bhp|0|abbr=on}} Manual)
c'est pas tout a fait la meme chose! car finalement elle tienne pas grand chose de plus que la GT! Mais c'est vrai elle ont le DCCD et des autobloq qui fait tout la différence.
