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Old 10-01-2008, 10:23 PM   #1
bugeye-brawler
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Default Legacy Twin Turbo

EJ22T what's the deal with it why do so many people not like them... what's the big issue with them?

I'm looking for future engine swap and i'd like to know the variables on the ej22t
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Old 10-02-2008, 02:00 AM   #2
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First of all the EJ22T does not belong in the Legacy Twin Turbos and if im correct they were never in the Japanesse market (The EJ22T engine itself)

As great as the engine is, CLosed Deck, Aluminum block, It is really only from what ive seen Good for nice reliable power, Nothing Crazy but nothing slow. Unless Your going to drop some serious dogh into its better off to get a newer more modern engine like the WRX or STI engines, Im not hating the EJ22T engine but it was from a building day when over here in the americas its all we had and for people on a very, very limited budget like me its just not worth it, Its getting outdated and the only thing good about was the block, The Stock Accesiories such as Heads, Turbo and manifolds were very restrictive.

Just my 2 cents!
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Old 10-02-2008, 10:43 AM   #3
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i understand so inorder to make it more efficent you would need to go back and redo the heads and maybe make the block a semi-closed instead of fully closed.
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Old 10-02-2008, 10:55 AM   #4
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The EJ22T is a single turbo setup. The twin turbo Legacies are variants of EJ20.
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Old 10-02-2008, 11:27 AM   #5
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Quote:
Originally Posted by bugeye-brawler View Post
[...] and maybe make the block a semi-closed instead of fully closed.
Quoted for posterity. Why on earth would you drill out a block to make it semi-closed?
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Old 10-02-2008, 06:21 PM   #6
bugeye-brawler
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idk a lot of reasons you would get better cooling through the engine... that;s one big argument i have heard, and by doing that you enable more cooling while only marginally compromising the durability of the closed engine

what would you need to do then to make the EJ22 a more durable engine if not that?
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Old 10-02-2008, 08:07 PM   #7
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Its a pretty good block, I havent looked into it but i doubt there is any support for aftermarket Internals to make crazy power, Youd have to look into swapping engine components.
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Old 10-02-2008, 08:14 PM   #8
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wow, theres PLENTY of info from back in the day on this

and its a good block. heads? nota soa mucha
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Old 10-03-2008, 08:23 PM   #9
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EJ22t = usdm Legacy SS
EJ20h = the twin turbo you're talking about

I say don't bother with either, unless you have a Legacy SS already. And then keep the 22t in the car it belongs in.
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Old 10-05-2008, 10:47 PM   #10
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ya i think i'm going to wait and get a FXT instead more durable and stable
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Old 10-05-2008, 11:20 PM   #11
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All twin turbos are quap!! YOU DONT WANT!!!

The BG/BD motors are the EJ20R (206kW) and EJ20H (191kW)
The BE/BH motors are the EJ208 and EJ206

The bottom ends on all of them are not even worth there weight in dirt.
The heads on the EJ20R are worth it because they are the same as V3/V4 STi heads accept they have an extra oil port that is used for the extra turbo. And the cams in the EJ20Rs for some reason are more aggresive factory than the V3/V4 STi ones (and this has been proven)

But all in all TT's are really quappy, my GTB has eaten two of them and i decided not to go back to them as they really are that shyt.

Sorry for the rant.
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Old 10-05-2008, 11:40 PM   #12
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Yeah, he was talking about the EJ22T, the single turbo early USDM legacy engine. That thing is tough as nails, I know a guy running one of those with drop-in forged pistons that finally had it explode after 3 years of 400whp. The block was fine, just a rod exploded since he didn't swap out the stock rods when he dropped in the forged pistons.
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Old 10-06-2008, 12:39 AM   #13
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shyt thats awesome... but i think with my current set up i'm going to do suspension mods until this engine gives then fine nice FXT or LGT to swap into it. I was thinking of an STI and then selling everything else to make my money back so idk yet??? I mean in a LGT i would probably run with the stock harness and forget about the AVCS plus then i have the turbo crossmember and access to all the parts i need for a n/a to turbo swap... plus hopefully everything i don't use is money back in my pocket
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Old 10-06-2008, 12:41 AM   #14
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I was also thinking of leaving the stock engine and doing work on the internals to make them turbo ready???
what would you guys say... it is better to buy a STI engine or bore out and forge out all my internals on my 2.5GT to make it ready for a turbo?
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Old 10-06-2008, 01:57 AM   #15
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Quote:
Originally Posted by anotherwhitegtb View Post
All twin turbos are quap!! YOU DONT WANT!!!

The BG/BD motors are the EJ20R (206kW) and EJ20H (191kW)
The BE/BH motors are the EJ208 and EJ206

The bottom ends on all of them are not even worth there weight in dirt.
The heads on the EJ20R are worth it because they are the same as V3/V4 STi heads accept they have an extra oil port that is used for the extra turbo. And the cams in the EJ20Rs for some reason are more aggresive factory than the V3/V4 STi ones (and this has been proven)

But all in all TT's are really quappy, my GTB has eaten two of them and i decided not to go back to them as they really are that shyt.

Sorry for the rant.
Now that's good news, any more info on that? How has it been proven?
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Old 10-06-2008, 03:20 AM   #16
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Quote:
Originally Posted by ReubenH View Post
Now that's good news, any more info on that? How has it been proven?
We measured the lobes old motor and compaired it to some v3 Sti ones that were lying around. They had slightly less duration for more top end power than the Sti ones that we had. It would make sense as the TT's have more power distribution in the top end than the STi's and there mid range.

A weird thing happens with them though, in 2 of the 3 single turbo cars i have seen them in, they make a weird drop and then spike in the torque curve at about 4500rpm. Well we thought it was the cams anyway.

Have you had your car tuned and on a dyno? Did it do a similar thing? I defintily know that Kooms car had it and the only thing we thought of at the time was the cams, but i havent talked to him about it since. I would like to know
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Old 10-06-2008, 03:52 AM   #17
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Quote:
Originally Posted by anotherwhitegtb View Post
We measured the lobes old motor and compaired it to some v3 Sti ones that were lying around. They had slightly less duration for more top end power than the Sti ones that we had. It would make sense as the TT's have more power distribution in the top end than the STi's and there mid range.

A weird thing happens with them though, in 2 of the 3 single turbo cars i have seen them in, they make a weird drop and then spike in the torque curve at about 4500rpm. Well we thought it was the cams anyway.

Have you had your car tuned and on a dyno? Did it do a similar thing? I defintily know that Kooms car had it and the only thing we thought of at the time was the cams, but i havent talked to him about it since. I would like to know
id try and post ACTUAL proof on the speculation of cam sizing. could be cool info, but im skeptical
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Old 10-06-2008, 03:53 AM   #18
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And the 22T's are great. I've heard nothing but good about them. They are indeed USDM only, and i'd pay a bundle to get a 22T block shipped down here to NZ... Closed deck 2.2L = win.

I do believe they are SOHC though. I reckon buy one, and stick some V3 STi heads, or EJ20R heads on. That would rock.

EJ20R's are cheap too, but they are twin turbo, and have big end problems... If you were to buy one, just pillage all the good bits (including loom etc) and discard the crap (block, turbo's, ECU and BBoD). Then rebuild and single turbo it.
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Old 10-06-2008, 03:55 AM   #19
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Quote:
Originally Posted by anotherwhitegtb View Post
We measured the lobes old motor and compaired it to some v3 Sti ones that were lying around. They had slightly less duration for more top end power than the Sti ones that we had. It would make sense as the TT's have more power distribution in the top end than the STi's and there mid range.

A weird thing happens with them though, in 2 of the 3 single turbo cars i have seen them in, they make a weird drop and then spike in the torque curve at about 4500rpm. Well we thought it was the cams anyway.

Have you had your car tuned and on a dyno? Did it do a similar thing? I defintily know that Kooms car had it and the only thing we thought of at the time was the cams, but i havent talked to him about it since. I would like to know
I've had it on the dyno, but not tuned, just running the stock V3 STi ECU still

Here's my dyno. Again, stock ECU, GTB heads. But i'm running a VF39, and EBC...

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Old 10-06-2008, 09:38 PM   #20
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Quote:
Originally Posted by ReubenH View Post
And the 22T's are great. I've heard nothing but good about them. They are indeed USDM only, and i'd pay a bundle to get a 22T block shipped down here to NZ... Closed deck 2.2L = win.

I do believe they are SOHC though. I reckon buy one, and stick some V3 STi heads, or EJ20R heads on. That would rock.

EJ20R's are cheap too, but they are twin turbo, and have big end problems... If you were to buy one, just pillage all the good bits (including loom etc) and discard the crap (block, turbo's, ECU and BBoD). Then rebuild and single turbo it.
How badly do you want the 22T block and some EJ20g heads? I know a guy who might have some laying around...
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Old 10-06-2008, 10:16 PM   #21
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me too, i know somebody with a few of these.....
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Old 10-17-2008, 08:59 PM   #22
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I have been looking again to make a new project, that how I found this thread. Has anyone else used one of these legacy twin turbo motors ? In stock form or mix and matched parts with other motors ?

The legacys are heavy cars so I would think there motors would be decent enough not to blow up all the time if ran at a realistic boost level. I know premium gas in Japan is rated higher than the 92 or 93 most of the US gets. If someone was to swap one in with the jdm computer and no boost control they would be running to much pressure for the gas here, so they would have short lives. People blow up the bullet proof ej22's, when not managed correctly any motor will fail.

Are these motors really junk ? I know they are on ebay and other JDM engine sites for under $1000, I have read they are cheaper because there are about 4 times as many Legcays in Japan than wrx's.

If you dumped the twin turbo setup, got a single turbo manifold, uppipe, turbo and IC (you could find all that used on here for under 300$) would they not make cheap swap candidates ? You could even probably sell the twin turbo setup to some kid and get your 300$ back.
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Old 10-18-2008, 07:13 PM   #23
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bob, I'm kinda thinking along the same lines. I am looking at installing one in my 64 Corvair, provided I don't change my mind between now and when I actually start the project. In stock form, not beating on it, I don't see why it wouldn't last a while? And if it does blow, there are quite a few out there to replace it with.
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Old 10-24-2008, 01:24 AM   #24
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Hello all. I am currently in Japan and have just picked up an EJ20H motor yesterday. I also visited the subaru dealership and asked them for an ecu wiring diagram. They were cool enough to make a photocopy for me. So armed with my japanese dictionary I began to translate it. Not finished yet but it's pretty close. The good thing about these diagrams is that 90% of it is written in katakana which the japanese use for loan words from english. So Injiekuta is Injector, Sorenoido is Solenoid, and meta is you guess it meter. Took me all night last night but here it is. I have seen many people on many forums asking for these diagrams.
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Old 10-24-2008, 01:25 AM   #25
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