KRIBZ

Haven't done much research yet. But i was just wondering if anyone has swapped a EJ22Tfrom a 94 Legacy with a SOHC EJ25 into a 02 OBS?

dub81

iTrader: (39)

Do you mean swap a ej22t from the legacy into a 02 OBS with a ej251 or do you actually mean a ej22t with a 251 head into a 02 OBS?

Don't know anyone locally unless its a shinobi project or I just wasn't paying attention. Wire merging unless you swap the entire harness. Also not sure about the cross member, i think you will have to use the legacy cross member. What are your power goals?? Or you could just go hybrid.

4080wrx

iTrader: (38)

reference rs25.com for all your swap needs

on a side note Suby's are like lego's, you will be surprised on what you can interchange between the years and body styles.

dub81

iTrader: (39)

^^^ He's right.. Wattup Jess, how's everything down that side?? Hope all is well, you need SPAM?? I got choke as a xmas gag gift from my stupid friends.

shaggadelic

iTrader: (26)

yes there are a few guys on rs25 that have done this. i my self was thinking about going this route till i started to read about them guys popping the stock rods.

and if your a ej251 your stock heads will mate up to this block

KRIBZ

Yes, I plan on swapping the ej22t from the legacy into the OBS.
From what i read about putting the heads from the ej251 onto the ej22t its not worth the modifications for the power gains, I'd personally rather just P&P the ej22's heads and rebuild the engine with some upgrades.
As far as power gains I know it wont have alot more power but it'll still be "more power".
I'm thinking that the best thing to do about the electrical, is to just swap the whole wireing harness and ECU. but im concerned about the fact that the OBS has a 5 speed tranny and the legacy is automatic.
So could i just reflash the ECU from the legacy or would i have to hunt a ECU down for a 94 legacy ej22t manual tranny?

Thanks for all the help guys, really appreciate it.

joejoe69

iTrader: (2)

how about slapping on '98 2.5L DOHC heads on the EJ22T shortblock? this is what i'll be doing on my future EJ22T build if I can't get my hands on a set of EJ20G heads.

joejoe69

iTrader: (2)

KRIBS,

if you want your engine to be a full EJ22T, you can get EJ22 NA heads and throw EJ22T cams in. the '22 NA has 1mm larger valves than the '22T, but the 22T cams better than the '22 NA. you'll have the best of both worlds from each head.

as far as the wiring goes, you can't use auto ecu's for manual applications. also, the old turbo legacy's are like my car, OBD1. you won't be able to reflash it. i suggest a very good piggyback if you use your stock ecu, or standalone for the best performance and driveability.

KRIBZ

So if i were to run the ej22t with the ej22 n/a heads, ej22t cam, ej22t harness and the AEM F/I controller piggyback.
I shouldnt have too much problems... right?

Also would the flywheel on the ej22t bolt up with the 02 OBS trans?

Scubaru

iTrader: (1)

Will you be running the electricals from the legacy?

KRIBZ

Yes

sigma pi

iTrader: (6)

OMG i need info on this swap too

i have an EJ22T motor its SOHC its on the garage floor

i have an EJ25 STi 05 on the motor stand going to sell

I have an EJ20 WRX 03 in the car now

what do i do haha
wrx heads on the 2.2?
and get the different head gaskets to lower or raise teh comrpession?

joejoe69

iTrader: (2)

nope, shouldn't be much of a problem. i wish i had done the same with the cam/head combo. AEM FIC should be good, as long as you have timing control.

the flywheel bolts onto the engine, but i don't know about the input shaft splines matching. i believe if its awd, they all should be the same. try researching that.

joejoe69

iTrader: (2)

your EJ22T won't mate up with any of the two, different phases.

it's not worth frankensteining the the EJ20/EJ25, however they both share the same wiring architecture. so i'd swap the 05 STi in.

the EJ22T will be harder to wire into your rex because its an older engine. you're better off selling it to me.

sigma pi

iTrader: (6)

if you want one i can get you one 700$

so no ej 20 heads on teh 2.2



its an 03 car