Subaru Conversion Information Resource Navigation Bar - over 160 pages of info on Subaru powered VW’s! :

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Site last updated on 15/04/08

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     There are an enormous amount of Subaru engines types available which are of potential use in VW conversions. RJES products are suitable for the engines made from the 1990 model year (MY90) onwards - i.e. the EJ series of flat fours, and the EG and EZ series of flat sixes.
     The table below shows a very simplified version of all the different types based on UK specification Subaru’s. When the different capacities were used and which Subaru models used them can vary a lot on other markets, and there will be many variations of each of the types listed for different markets. The specifications below are based on Subaru figures wherever possible:
    

Engine Size (litres) Cams Year Induction Fueling Power From* EJ18 1.8 SOHC 1990-92 Nat Asp Carb  80 L,I EJ18 1.8 SOHC 1992--> Nat Asp EFI  95 L,I EJ20 2 SOHC 1995--> Nat Asp EFI 125 L,I EJ20 2 DOHC 1992--> Turbo EFI 195-280 L,I,F EJ20 2 DOHC 2007--> Nat Asp EFI 175 L EJ22 2.2 SOHC 1990-95 Nat Asp EFI 130 L EJ25 2.5 DOHC 1996-99 Nat Asp EFI 155 L EJ25 2.5 SOHC 2000-05 Nat Asp EFI 160 L EJ25 2.5 SOHC 2001--> Turbo EFI 220 F EJ25 2.5 DOHC 2004--> Turbo EFI 300 I EZ30 3.0 (6 cyl) DOHC 2000-04 Nat Asp EFI 240 L EZ30R 3.0 (6 cyl) DOHC 2005--> Nat Asp EFI 250 L EG33 3.3 (6 cyl) DOHC 1992-97 Nat Asp EFI 230 S   3.6 (6 cyl) DOHC 2008--> Nat Asp EFI 250 L

                                *  L = Legacy (Liberty) / Outback, I = Impreza, S = SVX

    Apart from the above table, all info below ignores the six cylinder engine as these are very rare in Subaru’s the UK, and even rarer in VW conversions.

   The rest of ‘Choosing a Subaru Engine’ is split into the following sections:

     Get the VIN Number

     Commonly Used Engines

     Tuneability

     Cylinder Head Type

   Donor Subaru Age and it’s Effect on Wiring Complexity

     Import Engines

     Engine Cost

     MPG
 

Phase II SOHC heads flow bench tested http://users.adelphia.net/~wedge138/cobb1999_2.htm

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