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Old 02-11-2013, 10:19 AM   #1
JMlegacy
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Default EJ20X EJ20Y Power potential

Thinking of getting a new turbo and supporting mods for the EJ20X in my legacy. Wondering if anyone here has them and how much crank horsepower are you running and for how long so far? They are found in JDM and ADM legacy GT (2004+)
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Old 02-11-2013, 02:39 PM   #2
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No one?

I heard they are semi closed decks with some kind of forged pistons i think. 9.5:1 compression i think. idk
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Old 02-11-2013, 04:59 PM   #3
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there is no answer to this.....and you have no idea what you are dealing with, so how do you expect us to know???

i have NEVER heard of an ej20x

you need to stop posting and start researching and LEARNING what you need to know to even have a conversation about any of this

we can not spoon feed every n000b who shows up wanting instant gratification, here
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Old 02-11-2013, 08:24 PM   #4
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My EJ20Y quad avcs adm liberty (legacy) made 255awkw (350whp) unopened on e70

They're a open deck block, 9.5:1 static compression and forged rods/ crank

Edit : this was also through a 5eat auto so manual would see 370plus

Another guy down here made 270 awkw unopened on a 30,000mile motor (now up to 65,000miles and going strong) this was on pump 98 (your 93 equivalent). It was a 5 speed manual using a 3076
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Old 02-11-2013, 08:42 PM   #5
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Quote:
Originally Posted by dr20t View Post
My EJ20Y quad avcs adm liberty (legacy) made 255awkw (350whp) unopened on e70

They're a open deck block, 9.5:1 static compression and forged rods/ crank

Edit : this was also through a 5eat auto so manual would see 370plus

Another guy down here made 270 awkw unopened on a 30,000mile motor (now up to 65,000miles and going strong) this was on pump 98 (your 93 equivalent). It was a 5 speed manual using a 3076
dr20t.. what snail you running on yours? Who did your fab work for the upgrade turbo?Or did you buy the parts whole and install yourself?
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Old 02-11-2013, 08:52 PM   #6
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Garage 88 did the fab work

Join clubliberty.asn.au for more info

I just sold my turbo setup yesterday which was a complete bolt on including headers, up pipe, turbo, half the 3" dump, injectors, fuel pump and custom fmic kit including intercooler. so you just missed out on this!

Was running a Garrett 2871r with v band outlet and ewg

Contact garage 88 in Sydney for more details.

Mick
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Old 02-11-2013, 09:13 PM   #7
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i wouldnt want a 9.5:1 compression motor....unless it was gonna be on e85
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Old 02-11-2013, 09:22 PM   #8
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Quote:
Originally Posted by Uncle Scotty View Post
i wouldnt want a 9.5:1 compression motor....unless it was gonna be on e85
You'd be surprised

These motors outlive any ej255 /205/257 that I've seen

Even at double the factory torque / power
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Old 02-11-2013, 09:33 PM   #9
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Quote:
Originally Posted by dr20t View Post
You'd be surprised

These motors outlive any ej255 /205/257 that I've seen

Even at double the factory torque / power
Uncle Scotty is just gonna talk you down cuz he doesnt have acces to these engines. Pretend he's not there...

Were the Headers, up and down pipe all custom? Or just a custom up pipe and bellmouth?
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Old 02-11-2013, 09:44 PM   #10
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Quote:
Originally Posted by Uncle Scotty View Post
there is no answer to this.....and you have no idea what you are dealing with, so how do you expect us to know???

i have NEVER heard of an ej20x

you need to stop posting and start researching and LEARNING what you need to know to even have a conversation about any of this

we can not spoon feed every n000b who shows up wanting instant gratification, here
Oh boy uncle scotty, you are just like the PhD's I come across now and then. Full of it..
You will realize that EJ20X and 20Y's exists, much like these guys have responded.

Quote:
Originally Posted by dr20t View Post
You'd be surprised

These motors outlive any ej255 /205/257 that I've seen

Even at double the factory torque / power
Quote:
Originally Posted by dr20t View Post
Another guy down here made 270 awkw unopened on a 30,000mile motor (now up to 65,000miles and going strong) this was on pump 98 (your 93 equivalent). It was a 5 speed manual using a 3076
THAT is awesome.

The most popular tuner in my area had one in his GC8 running at 405HP. Doubt it's still in it (or still stock) as he's now running some 30PSI on that

I Guess these engines didn't reach North America, hence the reason Scotty responded as such. Nevertheless, posting about it could add to NASIOC's database. Just interested in the base platform they are

http://opposedforces.com/parts/legac...gine_assembly/
.

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Old 02-11-2013, 09:47 PM   #11
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... merged post ^

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Old 02-11-2013, 10:03 PM   #12
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Quote:
Originally Posted by JMlegacy View Post
... merged post ^

then you are in the wrong forum and board because the guys who posted, above, are not in the usa

there IS a reason that nobody uses these engines in the usa...but you will find that out

and you should already know that power limits are nebulous anyway..and asking about them means you really dont know what the hell you are doing

but anyway
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Old 02-11-2013, 10:07 PM   #13
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Yeah man, i really don't know what I'm doing. So I asked. Nothing wrong with that.
I have a few tuners on hand, good tuners, but ultimately the power level I run will be up to me. That is, for example, if they say it is good for 300, then I might run 280. I'm just trying to get a feel of what these engines are capable of, both for durability and power and then after doing my research, seeing what other guys are running etc, then i might go with 'X' setup.

I'm already in other boards asking questions, i just asked myself why not ask the great NASIOC

Thanks for dropping in just the same man, cheers.
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Old 02-12-2013, 02:15 AM   #14
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Your biggest issue is an ecu to control the quad avcs motor

Quad avcs was only released in 2011 onward wrx sti's in the USA, thus you would need this ecu and the entire canbus setup (biu, ignition barrel, key, immboliser and ecu) to run it and even then it will need significant revision (would also involve swapping left and right exhaust avcs solenoids to sync with the correct config trigger as on the adm/jdm ej20y these were facing the opposite direction to the ej257 quad avcs motors)

You then also have the problem of fuel setup as these motors run a dual fuel reg and side feeds which can be avoided with the right research

Long and short is its not a straight swap and is still an open deck block

I have a pair of quad avcs liberty heads sitting here from my motor which spun a bearing which I am looking to sell cheap soon so let me know if you're keen

Mick
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Old 02-12-2013, 07:23 AM   #15
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Hey man.

Just for clarity, I'm not doing a swap its already in my ADM/singapore legacy.
So you say open deck? That sucks, was thinking they were semi closed deck

Last edited by JMlegacy; 02-12-2013 at 07:28 AM.
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Old 02-12-2013, 07:34 AM   #16
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Quote:
Originally Posted by Uncle Scotty View Post
then you are in the wrong forum and board because the guys who posted, above, are not in the usa

there IS a reason that nobody uses these engines in the usa...but you will find that out

and you should already know that power limits are nebulous anyway..and asking about them means you really dont know what the hell you are doing

but anyway

I think it'd be good for NASIOC to eventually get a sticky together about the SE Asian blocks/heads. They might be worth importing.. you know.. like from Japan.. for a resonable sum.
I've mentioned this to you before uncle ****ty, but the Pacific Legacy/Liberty is very close to JDM and costs a lot more in SE Asia because we get all that 'Spec-B' **** as standard and get teh 2.0 Quad cam engine.
I'm pretty sure a lot of NASIOC ppls woould love to learn about them and order one from japan to thrash the **** out of. So stop being a negative nelly.

Quote:
Originally Posted by dr20t View Post
Your biggest issue is an ecu to control the quad avcs motor

Quad avcs was only released in 2011 onward wrx sti's in the USA, thus you would need this ecu and the entire canbus setup (biu, ignition barrel, key, immboliser and ecu) to run it and even then it will need significant revision (would also involve swapping left and right exhaust avcs solenoids to sync with the correct config trigger as on the adm/jdm ej20y these were facing the opposite direction to the ej257 quad avcs motors)

You then also have the problem of fuel setup as these motors run a dual fuel reg and side feeds which can be avoided with the right research

Long and short is its not a straight swap and is still an open deck block

I have a pair of quad avcs liberty heads sitting here from my motor which spun a bearing which I am looking to sell cheap soon so let me know if you're keen

Mick
What year/model Liberty do you have? I've got an 05 built in 04 that proportedly has a closed deck. Havent split it myself though. I think OP's and my injectors are 520cc too. The olderish models basically got an STi engine on a small twinscroll setup. What did you start with before the Garret?
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Old 02-12-2013, 07:43 AM   #17
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Keep the Info coming. I didn't know the adm and jdm engine were different in the way u stated harbs. People in Trinidad with the jdm version said it's got 440cc, is there a way I can tell what I have? I know I saw 520 in the ecu but would a photo help? Mine is 2004. Leather interior
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Old 02-12-2013, 08:08 AM   #18
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Definitely open deck block I have split mine up

480cc injectors here (blue side feeds which are unlike other side feeds and have the injector noise dampener on the rail)

Mine is an MY04 5 speed auto.

Oem turbo was a twin scroll vf38. This was for the 5eat only. The 5 speed manual received a td04hla twin scroll. Slightly larger rear housing (p15) but still smallish. Both turbos were good for extremely quick spool ( with a tbe I had 15psi by 2400rpm on 93 equivalent fuel), but ran out of puff very early. These were built for torque not outright power.

For info sake a new ihi vf38 is over $5000 aud from Japan. I sold my second hand one recently for $550 as they're hard to come by

This is probably going to cause a stir, but I believe these motors were the test dummy for the jdm ej207 Sti spec c twin scroll motors. Even down to the dual reg.

What else would you like to know?
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Old 02-12-2013, 08:27 AM   #19
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Definitely open deck block I have split mine up

480cc injectors here (blue side feeds which are unlike other side feeds and have the injector noise dampener on the rail)

Mine is an MY04 5 speed auto.

Oem turbo was a twin scroll vf38. This was for the 5eat only. The 5 speed manual received a td04hla twin scroll. Slightly larger rear housing (p15) but still smallish. Both turbos were good for extremely quick spool ( with a tbe I had 15psi by 2400rpm on 93 equivalent fuel), but ran out of puff very early. These were built for torque not outright power.

For info sake a new ihi vf38 is over $5000 aud from Japan. I sold my second hand one recently for $550 as they're hard to come by

This is probably going to cause a stir, but I believe these motors were the test dummy for the jdm ej207 Sti spec c twin scroll motors. Even down to the dual reg.

What else would you like to know?
Inderdesting! My MY05 ADM 5EAT 2.0 VF38 has yellow sidefeeds and 520 in the ECU flow scaling. Subaru have no reason to fudge numbers in ROMS do they? Edit-I hope they dont.

Last edited by Harbs; 02-12-2013 at 08:41 AM.
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Old 02-12-2013, 08:42 AM   #20
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Yellow side feeds? Do you mind posting a pic? I've seen about six to eight different engines (oem) in oz and all had blue side feeds

I know subaru Australia had an issue with failing injectors on these motors and a revised injector set was fitted where appropriate - maybe these are the upgrades?

520cc sounds interesting too....
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Old 02-12-2013, 08:43 AM   #21
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Pic of my injector and engine type code

Injector is blue sidefeeds.

Last edited by JMlegacy; 02-08-2015 at 02:19 AM.
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Old 02-12-2013, 09:04 AM   #22
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ej20x/y both open deck.
the ones I saw and tore part both dual avcs intake & exhaust.

given the cylinder walls are thicker that ej25s and do not crack cylinders.
power is determined by the thickness of your wallet.

but with 9.5:1 with an enormuous tmic or fmic or awic (my opinion flow rate close to 1000 cfm or larger) you want the cooling efficiency to cool and densify the intake charge tocompensate for the higher static compression ratio on boost.
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Old 02-12-2013, 09:06 AM   #23
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Thanks for dropping in Jaxscuby,
What about forged pistons or rods etc? anything like that in these?

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Old 02-12-2013, 11:46 PM   #24
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factory forged crank, rods but doubt if the pistons are forged.
since the x/y motors came in legacys unless spec B, but can not
verify since I did not actually see one when I was over on okinawa.
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Old 02-12-2013, 11:51 PM   #25
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Cool
My only problem now not knowing the real health of this engine, since i didn't get it new and has between 38 and 60,000 miles on it. In the ECU (romraider), the ODO reads 60K miles, in the dash, the ODO reads 68,000KM (38K miles?). Not sure why there is a difference but I'm working with the higher number and whatevr beating it took up to that point.

I'm only considering 260WHP (I'm at 200 now) for this daily driver. The other problem lies in the up pipe and downpipe as these are twinscrolls like no other. Meaning, only turbos for these engines will fit these engines without any mods.

Other boards suggest I use an STI vf 36/37 flange and get that turbo and install it. Other folks say change to single scroll and use blouch 16G turbo.
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