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Old 07-13-2005, 07:15 PM   #1
cornerbuddy28
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WRX motor, PPG's, me

Default Building a 2.2t legacy motor for swap

I am looking at possibly buying a used 94 legacy turbo motor to rebuild for an engine swap into a 2dr Impreza but I have some questions/concerns. I would like to get the motor to the 450 hp range by the time I'm done with it many moons from now so I'd like to take care of any parts that are going to need upgrading now so I don't have to deal with that later. From what I've read, the stock pistons seem to be the weak point in this motor and those would probably be the first thing I'd consider. What else should I think about replacing in addition to this to help avoid any risk of motor/part failure in the future as I gain more and more power?
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Old 07-13-2005, 11:00 PM   #2
Legacy777
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AWD 6MT EJ22T AWIC Swap

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If you want that much power, you're going to need piston, rods, and probably should look at getting the crank balanced & blue printed.

Heads are going to be your limiting factor. They flow like poop.
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Old 07-14-2005, 01:57 AM   #3
FuJi K
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get cooler termostat, aluminum radiator, port match intake with heads, port and polish heads, port match lots of things that you can. Making the air flow into the motor well is key to making power without going to a LARGE turbo.

I have an EJ22T longblock sitting as we speak. I chose this because I'm shooting for 400whp in the gear closest to 1:1 ratio, 4th gear maybe.
The supporting mods ( * = I have this)
*EJ22T shortblock
*2.5L DOHC heads
JUN 272 degree cams with valvetrain
Crawford rods and pistons
Crawford 80lb injectors, 840cc I think and fuel system
Hydra standalone ECM w/ wideband O2
Port matching and polishing
160 degree termostat
Aluminum radiator
possible v-mount intercooler or maybe just full front mount with radiator in the rear gate
GT30R ball bearing turbokit from Section8 motors
93 Non-oxygenated fuel
Oil cooler

I DO plan to put the EJ22T internals into my MY99 EJ22E NA motor and turbo that too. It depends on your HP goal. I have this setup layed out because of what I want. The port match helps LOTS. You make air flow into the motor well and you have HP. The GT30R won't make to 400whp if you just bolt on all the stuff together, but when you port it and so forth, it's possible. ALSO I'm depending on the JUN cams to help me gain some HP up there. I'm looking at a MAX 8500rpms redline. Don't forget that heat is the enemy of making power. Keeping the water temp and oil temps down will reduce detnation, but allowing you to run some more advanced timing for more power.
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Old 07-14-2005, 07:01 AM   #4
cornerbuddy28
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Default

so would you suggest just getting different heads instead of trying to mess with the ej22t heads. I mean what else would would work well on the motor. For instance could I put on ej20 heads and intake manifold to make it flow better? Also, people with 300 whp WRXs don't seem too concerned about busting rods and the ej22t rods are stronger than those. Not saying you're wrong, I'm still learning, but do you think those would be strong enough for my applications? From what I understand, the pistons are going to be a definite priority.
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Old 07-14-2005, 07:48 AM   #5
WRX2FFU
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If i am not mistaken, aren't the ej22t heads sohc. If so you would be better off with stock WRX heads. Also, as far as port matching goes. It is easy to do yourself but a proper port and polish and some time on a flow bench will yield a lot more flow. IF you cannot get 2.5 dohc heads i would at least get WRX heads and have them gone thru. IE: Bigger valves, better springs, new cams, Porting,polishing, flow matched, new buckets, ETC.... . The bottom end is pretty simple, the heads will make all the difference.



Also, I would get better rods as well. Forged pistons are a must but if your in there rods and some crank balancing are worth it. They will increase your engine longevity at that HP level and cylinder pressure's.

I would also say that you seriouisly need to consider an oil cooler, and also get the oiling of the ej22t all set. I believe there are some improvments you can make to the oiling system to make it work better. Remember the ej22t has less cooling capacity thru engine coolant because of the design, so it uses oil more to help cool it.


I am no expert, jsut food for thought.
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Old 07-14-2005, 09:16 AM   #6
Legacy777
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AWD 6MT EJ22T AWIC Swap

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The bottom line is how much do you want to spend. I'm guessing here, but I'd say fuji's got at the very least, (probably a fair amount more) about $5,000-$6,000 sitting there in that mod list.

If you want 300 hp, the stock ej22t internals should be fine. That's what I'm shooting for with my build up, and I think that is doable with the proper turbo, fueling, and engine management.
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Old 07-14-2005, 11:51 AM   #7
Matt Monson
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Quote:
Originally Posted by WRX2FFU
If i am not mistaken, aren't the ej22t heads sohc. If so you would be better off with stock WRX heads. .

I am no expert, jsut food for thought.
What's SOHC have to do with it? The SOHC EJ25 heads are some of the best flowing heads Subaru has ever put on a stock car, and they flow better than the WRX ones. The issue with the SOHC Ej22T heads is they don't flow very well. Any of the EJ25 heads, SOHC or DOHC would be a significant upgrade, though WRX heads will work as well.

Any of those heads will put you in a 7.3-7.5:1 CR range, so if changing heads, get your pistons manufactured accordingly. Both Crawford and Axis make pistons for the Ej22t that will put you in the 8's with those other heads...
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Old 05-22-2012, 10:26 PM   #8
legacyfrankenheimer
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Default head torque specs?

im doing something similiar. im have a bad ej25 dohc and i had the heads cleaned up and pressure checked and all is well there. i have a perfectly fine ej22 running the car right now (98 legacy gt). so i want to put the dohc heads on it with new cometic .052 mls gaskets for the block. what should i torque these heads down to? should i just take them to a local shop and have them torque them for me? i know the factory torque specs are going to be different since im using a totally different material. i need to know asap! Thanks!
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Old 06-02-2012, 12:06 AM   #9
ciper
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Your 98 LGT has an EJ22 in it? Did you swap it?
Is it a complete ej22 or an ej22 short block with ej25 heads?
If its running why would you swap the heads over? The compression ration is going to be way too low.
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Old 06-19-2012, 11:52 PM   #10
bbron12
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so if i did the ej22t block with 02 wrx heads, id need different pistons? id be running a vf23 turbo, and all stock wrx wiring, and everything else.
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