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Old 08-21-2005, 07:17 AM   #1
95turbocoupe
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i am trying to decided on what motor to use. Either of these motors will be new short blocks.First a new usdm sti short block.Second a new ej22t short block.Or third a rebuilt phase 1 2.5 with forged rods and pistons. i'm looking for the best bang for the buck. most reliable and strongest motor. planning on running 12psi on the street & 15-20 with C16 race gas at the track.someone please help me decided. thanks for any help
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Old 08-21-2005, 11:03 AM   #2
JonofScio
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what heads will you be using? if your car is a 95, and it's a coupe... then it most likely had the EJ22E to start with right? With those heads, you will *want* the EJ22T shortblock. Going with the EJ25 (any) will result in high(er) compression.

an EJ257 block with EJ22 (N/A or Turbo heads, they are virtually the same) will net you ~9:1 CR, i could get you the exact CR if I had the numbers on the cc of the pistons, piston deck measurement, (which I'd need the wrist pin information.... ect.) but to know it's close to 9:1 give or take a little, I think is what matters.

But hey, you may think 9:1 is just perfect for you. I think for my next turbo setup I will want closer to 7.5:1.
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Old 08-22-2005, 04:03 AM   #3
IdenityCrisis
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i would go with the ej22t block with a sti crank and forged pistons and rods to give you 2.5 liters and 99 rs sohc heads. you'd have a 2.5 bullet proof motor. do the work yourself and some some dough. but if you dont want to spend that much just go with a sti sb and forged pistons. still good but not as good as the ej22t. - IC
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Old 08-22-2005, 04:33 AM   #4
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Not quite- you must use a phase 1 crank with a ej22t block unless you want to do a lot of machining. You can use a crank from any phase 1 2.5 engine an sti crank will not work.
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Old 08-22-2005, 08:31 AM   #5
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^ what he said
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Old 08-22-2005, 12:51 PM   #6
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It's not really about how much PSI you want, it's how much power you want. 15psi on some turbos is A LOT compared to some turbos...

How much power? OR what are you trying to build? daily driver weekend race/track?
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Old 08-22-2005, 02:36 PM   #7
95turbocoupe
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i have a stock ported out grand national turbo looking to make 350 horses if this will help the heads are ported and polished ej2.2 heads 540cc injectors and a 550cc fith injector that comes on at 10psi also a afc and a fmic. the first motor was a phase 1 with je pistons but i bust some thing. and didn't like that motor because of the piston slap. looking for a stronger motor
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Old 08-22-2005, 03:33 PM   #8
FuJi K
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I'm not too sure on the specs of that turbo, but....the STi shortblock is good enough to make you relieble 350whp if you're lookin at that.

my setup is a bit different from yours.
built EJ22T w/ DOHC 2.5L heads w/ JUN stuff, 840cc injectors, FMIC, GT30R garrett turbo. But I'm looking for 400whp though....that's like...470crank hp
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Old 08-22-2005, 06:46 PM   #9
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could always buy my shortblock and JE pistons block is split and ready to be machined even!

http://forums.nasioc.com/forums/showthread.php?t=818766
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Old 08-22-2005, 10:36 PM   #10
02 wrx sti JDM
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Quote:
Originally Posted by Aphex
could always buy my shortblock and JE pistons block is split and ready to be machined even!
+1 for that
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Old 08-23-2005, 07:04 AM   #11
95turbocoupe
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what phase is the motor
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