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Old 12-04-2007, 02:05 AM   #1
tedstriker
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Default Ej22t or Ej257 build up

i have a 2004 sti and I need to build up the motor. I have a rotated gt30r set up, and want to really push the turbo, and also eventually go to a gt35r.

I've read multiple threads about these 2 engines, and wanted to get your opinions on which would be better for my purposes. I like my off boost torque of my 2.5, but how much different would a bored and stroked 2.4 ej22t? I want to build a bullet proof engine that can handle the turbos I've mentioned and still be daily driven. Let me know what you think.
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Old 12-04-2007, 02:19 PM   #2
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A built EJ257 wouldn't have an issue holding the power of a 35R.
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Old 12-04-2007, 02:39 PM   #3
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I'd agree with homemade. but bullet proof..turn the 2.2 into 2.5 with the usual goodies.
the 2.2t already comes with piston squirters & closed deck.

it might be over kill, but thats what i'm
doing to my 2.2t.
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Old 12-04-2007, 05:31 PM   #4
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Quote:
Originally Posted by jaxscuby View Post
I'd agree with homemade. but bullet proof..turn the 2.2 into 2.5 with the usual goodies.
the 2.2t already comes with piston squirters & closed deck.

it might be over kill, but thats what i'm
doing to my 2.2t.
Thanks for the response. Anyone have this set up? I've read of some low end torque problems with the 2.2, but how is it after it's bored and stroked? will a stock ej257 crank fit?
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Old 12-04-2007, 06:01 PM   #5
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just build the sti block..people have gone 10s on the stock stuff..

ej22t's are cool but if you already have a ej257..its pointless IMO
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Old 12-04-2007, 06:38 PM   #6
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just build the sti block..people have gone 10s on the stock stuff..

ej22t's are cool but if you already have a ej257..its pointless IMO
The problem is that my ej257 has already been bored .020, so I pretty much need a new block.
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Old 12-04-2007, 07:23 PM   #7
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check axis power racing for their stage motors and
read which ones start from 2.2t cases.

pointless, well everyone has an opinion.

I autox monthly and my dd, so think of it as a piece of mind / insurance
that my motor will with stand anything i throw at it.
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Old 12-04-2007, 08:21 PM   #8
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Quote:
Originally Posted by jaxscuby View Post
the 2.2t already comes with piston squirters & closed deck.
well, the first perk causes decreased oil pressure and the second, overheating...so when you say bullet proof, are we talking race car of road car?

this all also depends on how hard and high you are going to push it...pressure makes power but also heat and more load on the oiling system...
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Old 12-04-2007, 08:40 PM   #9
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Originally Posted by Homemade WRX View Post
well, the first perk causes decreased oil pressure and the second, overheating...so when you say bullet proof, are we talking race car of road car?

this all also depends on how hard and high you are going to push it...pressure makes power but also heat and more load on the oiling system...
Semi daily driven, drag, auto x etc. Who knows in the future? gt35r, gt40.....If I do this once, I don't want to do it again. oiling, heat control will be taken into consideration. Thanks for letting me know some of the drawbacks, but is there one that is stronger and better suited to making power than the other?
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Old 12-04-2007, 08:51 PM   #10
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Quote:
Originally Posted by tedstriker View Post
Semi daily driven, drag, auto x etc. Who knows in the future? gt35r, gt40.....If I do this once, I don't want to do it again. oiling, heat control will be taken into consideration. Thanks for letting me know some of the drawbacks, but is there one that is stronger and better suited to making power than the other?
It sounds like you are trying to have your cake and eat it too. With the power levels you are planing to run you will probably be employing 2618 alloy forged pistons, which due to their greater clearances at startup and comparatively low hardness and wear resistance (compared to stock) will wear out much faster than stock.
Performance is a compromise no matter how you look at it. You will give up a little in the way of drive ability/longevity in exchange for more power regardless of your build.
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Old 12-04-2007, 09:07 PM   #11
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no not really, just personal choice. have darton sleeves machined into
your existing case halves. of course forged pistons & rods.
you could get ceramic coatings for various parts too.
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Old 12-04-2007, 10:46 PM   #12
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I really appreciate the concern for the drivability of my car and longevity of my motor. I already have a gt30r with a rebuilt engine with forged internals (that sounds like a deisel when its cold) and a 6 puck clutch. My drivability is already gone!! Any info on these 2 blocks compared to each other? Thanks what i really want to know about.

Last edited by tedstriker; 12-04-2007 at 11:08 PM.
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Old 12-05-2007, 01:01 AM   #13
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WHO's EVER had overheating problems with the 2.2T???? I'd like to hear.
JUST because it's closed deck up TOP, yes up TOP, doesn't mean it overheats.

There are MANY ways to overcome the "overheating" 'thought' that MANY thinks. Cooler thermostate, larger radiator, ......

BTW, I run an EJ22T w/ '03 WRX heads. I don't have overheating issues. I drive my car hard but I have a cooler themostate. I will be purchasing a aluminum radiator as well.
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Old 12-05-2007, 12:51 PM   #14
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stock vs stock, the ej257 would probably be my choice. As the rods are much more durable.

but the fully closed deck nature of the ej22t means that if you don't want to get into sleeving your engine, it will definatly keep your nice round cylinders from turning into nice oval cylinder much longer than the sti block will....

its a tough decision really... But seeing as you already have an STI block, why don't you just have it sleeved and build her up from there ??
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Old 12-08-2007, 02:42 AM   #15
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stock vs stock, the ej257 would probably be my choice. As the rods are much more durable.

but the fully closed deck nature of the ej22t means that if you don't want to get into sleeving your engine, it will definatly keep your nice round cylinders from turning into nice oval cylinder much longer than the sti block will....

its a tough decision really... But seeing as you already have an STI block, why don't you just have it sleeved and build her up from there ??
I'd like a solution that will work for any future turbo upgrades I may have in the duture. I know the ej22t is a stout base to work from, so it may be worth using it. If anyone can talk me into one or the other, I'll consider it. Up till know, the only argument against is price, potential over heating, and less displacement=less off boost torque. comments welcome.
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Old 12-08-2007, 03:41 AM   #16
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I've got a ej22t and had a 257 as well. I never had any issues with overheating on the 2.2. The problem with the 2.2 is actually getting a good case as they aren't made anymore. My next suggestion would be to follow IllNastyImpreza's advice and give [email protected] a call and get a quote for sleeving your existing 257. It will handle anything you can throw at it.
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Old 12-10-2007, 02:18 AM   #17
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I've got a ej22t and had a 257 as well. I never had any issues with overheating on the 2.2. The problem with the 2.2 is actually getting a good case as they aren't made anymore. My next suggestion would be to follow IllNastyImpreza's advice and give [email protected] a call and get a quote for sleeving your existing 257. It will handle anything you can throw at it.
What's the torque like on the stroked 2.35, or 2.4? much different to the ej257? will it drastically affect my tune, or can i replace and go?
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Old 12-10-2007, 03:45 AM   #18
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Torque seemed like it was pretty much the same,however it took about 9 months to get my car back together and I was driving my torque less 1.8L.
Unless you throw another 257 back in ,your tune will change.
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Old 12-11-2007, 12:02 AM   #19
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an ej22t bored .020 over with a sti crank = 2.35, right?
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Old 12-11-2007, 06:30 AM   #20
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I don't know [email protected] built it.
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Old 12-11-2007, 12:06 PM   #21
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Keep in mind in order to throw an STI 79mm crank into the EJ22t you need to mill openings for a rear main thrust bearing.

I have an EJ22t block that is bored .020 and stroked using a Phase I EJ25 crank with Pauter Phase I EJ25 rods. Its fresh from the machine shop and only waiting on the heads to be finished. I'll let you know how it turns out with my T3/T4 hybrid turbo and stock 5spd. To be honest from all that Ive read and heard from my engine builder, this combo is indestructable unless you do something really stupid with tuning. Another little + for my combo is the smaller Big End Bore sizing on the EJ25 Phase I rod/crank. I heard some engine builders are milling the BE crank journals to shrink the diameter then running thicker bearing so that there is less of a rotating surface requiring oil. One reputable person I talked to claimed they have never had spun rod bearings when running STI cranks on their 600 plus hp motors.

I will pretty much be running low boost until I can afford the 6 speed swap. We'll see how driveable it is down low. To be honest the EJ20 in my 03 WRX isn't too bad in the lower RPMs now that I did the wastegate mod and K&N filter. If I can live with that my stroker motor will be just fine in the Legacy.
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Old 12-11-2007, 12:08 PM   #22
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If you want an EJ22t I know where to get one Ive had one sitting in my back yard that I was planning to yank the drivetrain out of and put into my 95 L. Unfortunately I got rear ended in the L. I'd like to get rid of the 91 turbo Legacy now that I have no use for it.
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Old 12-13-2007, 12:05 AM   #23
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How close would my tune be? If I have Sti heads, Sti crank, ej257 compression and ej22t block, how far off would my ej257 tune be?
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Old 12-13-2007, 12:41 AM   #24
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most likely, even if your putting everything together so it's the same as your currently running, it'd be recommended to get a new tune maybe after the break-in, but if you change any aspect of the motor a new tune would be ideal and maybe even necessary for break-in
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Old 12-13-2007, 06:13 AM   #25
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I mus admit that i have run both EJ20,Ej22t,and EJ257 here in St. Lucia with a gt3542r and have never noticed any difference in oil pressure between them or overheating.
I data log to check these things and it doesn't seem to happen, and its 86F year round here so if it going to overheat anywhere it would be here.
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