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WRXKidid775 03-30-2007 02:34 AM

ej22 engine builders check it
my buddy spun a rod bearing in his rex and was looking to swap either a ej2507 or a ej22 out of an oldschool legacy

the ej22 is sohc but could you use the heads from the ej20 on the 22 to make it a dohc correct?

also would the compression be an issue at all because if it was originally sohc because it was NA not forced induction right?

it came out of an a/t car but that shouldnt be a problem iirc.

let me know soon please thanks.

W0R2X 03-30-2007 12:20 PM

would i need em like accessport?

XRT 03-30-2007 08:06 PM

I have a 02 WRX and I ran a ej 2.2t block ,i dont have experience with the N/A, I dont think the N/A block would be very strong .

Hit me back if you have any other questions

WRXKidid775 03-31-2007 01:36 AM

well its sohc but we would be using the dohc ej20 heads and its not going to be a huge power car. just trying to get it up and running. is the ej22 a drop in or are we gonna have to mess around with mounts at all?

koo i talked to a guy who could get it tuned over the internet using the tactrix cable that i am ordering soon so no worries on em.

XRT 03-31-2007 07:53 AM

Everything lines up, I have never dealt with the a NA but the 2.2t block you had to drill and tap a vaccum line nipple that was not used by the wrx plus you have to use a 2.2 head gasket. The only thing I was saying is that i dont think the 2.2 will hold any power evn the stock wrx boost.

WRXKidid775 03-31-2007 01:04 PM

eh bummer thanks man. good to know that. we were hoping it would work. motor is for sale for 250$ and it runs so we were gonna by it tear it down send it to the machine shop to get machined and to hone the cylinders and try to be sneaky with it but if its gonna be an issue with supporting the boost i dont wanna deal with it.

mosc 04-02-2007 12:43 PM

It'll run but I wouldn't turbo that motor. It's not gunna hold boost and you'll just blow it. Even the 2.5 in the RS is crappy under boost. No NA motor is going to be reliable under significant boost. That's why we all love turboed from the factory cars to start with.

LiL Shoaf 04-02-2007 05:12 PM

An NA EJ22 will not hold more then 8-10psi before it starts to blow apart.. (General Rule of Thumb).. However a Fully Closed Deck EJ22T is a TANK.

W0R2X 04-02-2007 06:26 PM

that is the engine that i am trying to find shoaf.. but i wasnt sure if they used the same block in the n/a and the turbo model legacy. so the difference is open deck and closed deck? what if i sent the n/a block to get the deck closed?
if that doesnt work i want to try to find an sti block.. there is one off of [url][/url] but im not exactly sure what i need to do to make it work. so far from what i gathered, i can use my wrx heads, but then again i dont know for sure. i dont know which head gaskets i need to use, seem like cometic, but what thickness? and as for tuning, is it necessary for me to get em or can i just use a tactrix cable like wrxkidid was telling me? (sorry wrxkidid, i trust you i just need to be sure.) and is that all i need to do? or is there more?
anyway, shoaf, you seem to be the man to ask, so if you could, help me please.. thnx for anyone elses inputs.
thanks in advance.
Koo Tran

LiL Shoaf 04-02-2007 06:50 PM

Were did you see "deck closing"?? This would be a nice option to sleeving for strength.. and Yes, "Most" NA blocks were open deck (very weak, the cylindar can actually move and cuase head gasket failure) and closed deck (area around cylindar is not hollow). I'll try to find some pictures..

W0R2X 04-02-2007 06:55 PM

i cant remember where i saw the ad, i'd have to look again. i know what it looks like, but i'm wondering if it would work.
im leaning toward getting the ej257, but again, i dont know exactly everything that needs to be done, and i'm trying to get out of this paying as little as i can.

LiL Shoaf 04-02-2007 06:58 PM

Ok so I can't seam to edit my posts anymore...

Found a comparison page already setup..


Great compairison.. Just look at the difference in the blocks..

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