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Old 10-11-2003, 03:04 PM   #1
garret
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Default 2.2 legacy or 2.5 sti short block

hey i was just wondering your imput on what short block i should use to run for high boost in my 99 25 rs instead of rods and pistons on my stock block. im just wondering what block i should run and what kind of prices any of you have receive.

thanx\
garrett
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Old 10-11-2003, 03:42 PM   #2
8Complex

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How high of boost? And with what turbo? More then likely, the EJ257, depending on your turbo size.
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Old 10-11-2003, 04:29 PM   #3
jeff22
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STI short block their shouldn't even be a question! unlimited power potential.
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Old 10-12-2003, 08:13 PM   #4
seven881
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I'll take a EJ22T over a EJ257 anyday.
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Old 10-12-2003, 08:37 PM   #5
subiekid
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2.2T. then make it into a 2.4 stroker.
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Old 10-12-2003, 10:26 PM   #6
Andursun0013
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my question is why would you guys take a EJ257 over the EJ22T?? I'm undecided at this point - the extra .3 liters of displacement would be very nice but I like the looks of the 2.2 block a little more (seems more stable for boost).


on a bit of a side note...is the EJ22T block aluminum??? I'm pretty sure the EJ257 is


Kyle
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Old 10-12-2003, 11:00 PM   #7
seven881
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EJ22T Info:
http://forums.nasioc.com/forums/show...hreadid=325790
http://forums.nasioc.com/forums/show...hreadid=352136

Search for EJ257 and you should find the I-speed threads and others threads about it.
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Old 10-13-2003, 04:47 AM   #8
8Complex

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In the end, it depends on what you want to do, not which motor is better. Keep in mind that even if money isn't an object, the EJ22T is still low-pressure cast and has the smaller crank journals, thrust bearing in the middle of the crank, and it has different (possibly worse) laid out oil passages internally. It does have the piston oil squirters and a near-closed deck, though.
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Old 10-13-2003, 08:14 PM   #9
totoherbs
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I like the ej22 and i-speeds blocks are useing a phase 2 crank...

I like that idea... I wonder if they have a 2.2L that would have it.
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Old 10-14-2003, 08:50 AM   #10
MY99 2.5GT
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8 - You act like medium and low pressure casting is a bad thing? Medium pressure casting is worlds better then the high pressure casting methods that the STI and all other current subaru blocks are manufactured by. Medium pressure casting allows the metal molecules to cool slower and stay much more dense because of the decreased pressure and heat used during casting. High pressure casting causes the metal to greatly expand alllowing air bubbles into the casting. With medium pressure you have much densor stronger metal.

Two Words: Piston Squirters
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Old 10-14-2003, 09:04 AM   #11
jeff22
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Yea the ej257 block is junk that is why they are using it in all the new reliable high hp sti cars? I would rather take a 15 year old design than buy a 1 year old design and start with that?
Plus the ej22t with less displacement(?) will make more top end power rather than using the ej257 and gaining a butt load more torque and power. I have already decided!
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Old 10-14-2003, 09:35 AM   #12
Wedge
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Quote:
Originally posted by jeff22
Yea the ej257 block is junk that is why they are using it in all the new reliable high hp sti cars? I would rather take a 15 year old design than buy a 1 year old design and start with that?
Plus the ej22t with less displacement(?) will make more top end power rather than using the ej257 and gaining a butt load more torque and power. I have already decided!
Will Tony Rigoli use an EJ257 on future cars?? STAY TUNED TO FIND OUT!
I'd rather go with something that has been PROVEN to work, than with something new. Oh, wait.......I did already!
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Old 10-14-2003, 10:45 AM   #13
Graham
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Vic, I just recieved my 2.5Lsets STi block.

You know what this means; you and I are now in a race to see who can make the most power!

Graham
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Old 10-14-2003, 11:34 AM   #14
Wedge
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Awesome Graham!
Gonna send you a PM now!
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Old 10-14-2003, 02:29 PM   #15
jeff22
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Graham what about me I want a race to see who has more power!! Check this out www.ffteng.com
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Old 10-14-2003, 06:02 PM   #16
Graham
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Jeff, you are cordially invited friend! Although, you have already posted some great numbers. I won't know mine until early November. I can tell you my setup though, so you can wait in anticipation :

Stock USDM STi block
Stock heads/stiffer valve springs
MRT FMIC
T3/T04S turbo
Link Plus
Big Injectors (don't know what sizw yet)

I know right off the bat my biggest restriction is going to be the tranny. Once we start tuning on the dyno and *if* I get 300 WHP, I might just call it quits until I can get new gears. But, then again, I might be anxious and say 'keep on going'!

Your car is fast man! 12.4, thats damn good. I can't remember but you are on the stock tranny right?

Also, what clutch are you using? I am on an ACT street setup right now, and I don't think it is going to hold, but I'm not sure. It says its good for 302 HP (not wheel), and I plan on going beyond that. Think it will hold?

What size injectors do you have? Turbo?

Graham
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Old 10-14-2003, 08:12 PM   #17
AntonioS
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It is very cheaper to buy JE pistons 8.5:1 and rings for 490$$ and with all stock internals besides pistons you can run up to 25 or more psi of boost. Thats what I did in my engine and I have 155psi of compression in each cilinder and JE holds lots of power much more that stock ej257 and ej22t
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Old 10-14-2003, 08:14 PM   #18
Graham
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You won't be running that much boost with the stock rods man, I can guarantee you that. Yah, $490, then factor in close to another $1500 to have them installed, and your motor still isn't bullet proof.


Graham
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Old 10-14-2003, 11:06 PM   #19
AntonioS
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Rods are very similar in durability to the wrx ej20 and I'm running now 25psi and they hold pretty well. I did all my engine work so I saved the labor cost but If he buys a ej257 or ej22t he will have to pay the labor cost for installation.
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Old 10-14-2003, 11:32 PM   #20
Graham
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What kind of turbo are you running to sustain 25 psi? It better be big, thats for sure.

I will be interested to see how well your engine holds up with this much boost. However, I disagree with you in the fact that the stock EJ25 rods are comprable to EJ20 (USDM) rods. Most speculated that the stock EJ25 rods would begin to break around 320 or so crank HP, as they are cast units, and not very strong. I have seen stock WRX rods take up to 400 crank HP and beyond. So when you hit numbers around there, and your stock rods are still intact, let us know.


Graham
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Old 10-15-2003, 12:56 AM   #21
AntonioS
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I'm probably more than 400 hp at the crank but can't say with security cause in Puerto Rico we don't have awd dyno. The ej257 isn't that great it will hold the same boost that the ej20 cause it uses the same materials to construct the internals. Also the difference in the rods its the stroke. EJ25 engines have a crappy pistons but with son forged low compression pistons you are done
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Old 10-15-2003, 02:04 AM   #22
Graham
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Alright then, have fun with it, while it lasts....


Graham
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Old 10-15-2003, 04:34 AM   #23
8Complex

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I'll tell you right now... at 25psi and a fully open deck, you're going to run into cylinder wall stretching pretty fast.

But, if you're only putting 400hp to the crank on a 2.5 while running 25psi, you're running pretty conservatively anyway, so you may be a little safer. You should get a Road Dyno and see what type of power you're actually producing. You can do it on the normal roads and all you need to know can come from weather.com and finding out your current altitude.
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Old 10-15-2003, 07:50 AM   #24
jeff22
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Graham: Stock trans with the act street strip clutch. w/ only 13 psi of boost! I am hoping the clutch will go befor the trans.
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Old 10-15-2003, 10:06 AM   #25
leondal
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Where does one get an STi short block?

Also, where can one get some more sturdy head gaskets. These stock ones are *****.
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