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Old 05-15-2005, 04:29 PM   #1
Scooby Specialist
Member#: 32493
Join Date: Feb 2003
Chapter/Region: South East
Location: LSU
2002 Impreza WRX
rock chipped blue

Default EJ22G into WRX...

i'm looking to do an EJ22G + turbo (legacy closed deck block) swap into my wrx sometime before the year is out. just putting out a few feeler questions...

1. how hard is this block to find? can they be bought block only (no shortblock setup or longblock setup) for under $1k brand new never been used?

2. stroker kit? i've read a couple places that you can fit the a certain 2.5 crank in this block as a base for a 2.35L stroker motor? which crank is this?

3. internals. who makes quality forged aftermarket pistons and rods for this motor? if i do the 2.35 stroker, can i use forged WRX rods with 2.2L pistons and mate them to the appropriate 2.5 crank (if what i read was true) to acheive a low compression motor for moderate to high boost applications? (14-25psi)

4. will 2002 WRX or USDM STi heads bolt to this block? with the above specified internals, will there be any possible clearance issues with valves?

5. is this block a direct bolt in to the WRX engine bay? if not, is it a simple issue of just fabricating new motor mounts or purchasing a kit if there is one available?

6. if WRX/STi heads are to be used, will there be enough space above the motor to use a TMIC or is this block significantly larger than the factory EJ20 causing a clearance issue between the IC and hood?

i'm sure i will have more questions sometime in the near future but these are the main ones that i'd like answered. thank you for your time and possible help that you can give me.

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Old 05-16-2005, 01:27 AM   #2
Tbird Man
Scooby Newbie
Member#: 71991
Join Date: Oct 2004
1999 Legacy GT Ltd.


1. not sure.

2. see1.

3. as for rods, I believe the NA 1.8 and 2.2 come with forged rods and crang, anyone know about the 2.2t?if not Crower makes good stuff.

4.should bolt up, the EJ22t pistons are dished and the WRX heads have a higher volume CC, so shoulden't have clearence issues but your CR would go to like 7.5:1

5. yes, direct bolt in.

6. block shoulden't be any bigger.

7. ????????

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Old 05-17-2005, 01:51 PM   #3
Scooby Specialist
Member#: 21965
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Milwaukee, WI
2002 WRX
V-mounted 40R...what


1. They are pretty hard to find. Try to contact a major junk yard dealer to see if they have any across the country. When I found mine they only had two. If you find one, I doubt it will be just the block, you will most likely have to buy a shortblock setup. Mine cost me about $450. I doubt you will find a new one for under $1k. I have a website of a guy who usually has them in stock, I will get it to you when I get home.

2. The crank is a phase 1 ej25 crank from a 2.5rs before 1999 i think. The key is that it is a phase 1, as the bearings are in different places between phase 1 and 2 cranks.

3. Internals: Pistons: I think cp is the best for this application, I think JE makes some too.
Rods: Pauter is the best, eagle is the cheapest as far as forged are concerned.
If you do the stroker you cannot use ej20 length rods unless you want a really low compression ratio (something like 7.6:1, is you only run 25 psi its definitely not worth it). You have two options, either custom length rods, or custom pistons.

4. Both heads bolt on, but I can't remember the sti head's affect on compression ratio.

5. The blocks themselves are the same size.

6. See above, stock like clearance.

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