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Old 08-31-2000, 02:00 PM   #1
8Complex

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I just did it last week. It works great! 835hp at the wheels too!

Nope, 2.0 vs. 2.5... I'll definetly go with the 2.5.
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Old 08-31-2000, 02:07 PM   #2
RallySport
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Thanks Philippe... The fact they told you that the new EJ20 is going to be just as hard to do as the jap spec probably means the new US market EJ20 electronics will be the same as the EJ20's from japan. I was told that the problem is grafting the electronics into an RS...

I know of a few people doing this right now, there is CanJam which is close to you and I also think Mike Shields from SPD in Calif. is also trying to figure it out. There's more but those are the places i've contacted.

Certainly hope it won't be too much trouble to do the swappo!

Thanks for the reply... any others know anything???
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Old 08-31-2000, 02:08 PM   #3
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It's been my plan all along..
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Old 08-31-2000, 02:16 PM   #4
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I've thought about this since I first heard of the Rex coming to us...

I think that it should be possible, with the only custom parts being the motor mounts.

Reason: <small>This is some long, drawn-out Eric-logic, so bear with me .</small> The Legacy will be getting the turbo engine in the GT model (opinion; also mentioned in the Autoweek article about the H6-VDC Outback). The Legacy uses the same 2.5l engine that's in the RS. Now, if the turbo can go in the same space as the 2.5 in the Legacy, I'd expect it to work in the RS as well. Hmm. Now that I'm thinking about it, I'd expect the H6 to squeeze in as well.

My apologies if this has been discussed and squelched already, I've been away from the board for a couple months.

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&nbsp;&nbsp;&nbsp;&nbsp;'98 2.5 GT Wagon - <a href="http://208.9.184.110/MembersList/ViewMemberPics.cfm?MemberID=143" target="_blank">Pics</a> - <a href="http://www.jeneric.ws/eric/radioflyer.htm" target="_blank">Page</a> -
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Old 08-31-2000, 02:17 PM   #5
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hey 8Complex... I think the 2.5 is the best car I have ever been in, but, I also believe it is a detuned subaru. I would love to think that I could have a sube with P1 or WRX like performance and the great looks of the RS. This would, if done properly, be one of the best street cars available... in the WORLD!

...hate to bash the 2.5... but it just ain't the same. That's why we're all here right... Trying to upgrade the RS to world standards?
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Old 08-31-2000, 02:21 PM   #6
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thanks Radio Flyer!! you bring us all some hope!!
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Old 08-31-2000, 03:10 PM   #7
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Rallysport-

It has been argued by many over and over that the EJ25 is a better starting point to make power. Why would you want to decrease displacement?

8-

Agreed. EJ25 all the way, baby

Sean
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Old 08-31-2000, 06:03 PM   #8
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Hey Sean, I appreciate your arguement about displacement... but i've also heard too much about the EJ20 as being the only engine capable of 280+ reliable horsepower. I have read Mike Shield's post on another board about the EJ20's iron block with hardened crank and such...just a better bottom end he said. That's why I would opt against turbo charging my RS. I plan on keeping my car for a long time and would like the reliability of a "purpose built" turbo engine.

I would totally agree with you if we knew the long term consequences of a turbo RS, but until then I would rather not modify my car.

I do know some poeple with a minnam stage one and they have had no problems, so i don't think it's the wrong way to go, i guess it just depends on how much you rely on the dependancy of your car. I wish i could 'tune' my own car but i can't so i'm not going to break something that's not broke!!

edit -- iron, steel what's the diff?

[This message has been edited by RallySport (edited September 01, 2000).]
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Old 08-31-2000, 06:35 PM   #9
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Mike Sheilds also said a while back that intakes and exhausts don't do anything to our cars. Then the dyno proved him wrong.
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Old 08-31-2000, 07:01 PM   #10
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I'm waiting patiently for the new WRX to come to the US so everyone can finally see how weak-kneed and overly stressed it is compared to a properly turbocharged EJ25. Why the heck would anyone want a soggy, low compression 2.0 liter that needs to be wound out to 7000-7500 to make full power when he could have a big, torquey, high compression 2.5 liter that makes much more power, spinning to a rod-friendly 6000rpm? And don't say reliability because we've all seen the kind of piss poor tuning abuse the EJ25 can withstand. Far more sturdy than the EJ20, in my opinion.

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Old 08-31-2000, 07:05 PM   #11
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Out of curiosity then, what's the best turbo kit on the market... probably been covered before but are there any kits in anyones opinion that could put out 300hp -- reliably???
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Old 08-31-2000, 07:07 PM   #12
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A strong bottom end is like insurance. Insurance against poor tuning. Like Shiv has always said (paraphrase) It's not horsepower that prematurely kills engines, it's detonation. In any case, I doubt that anyone who goes through the engine swap process will be happy with 215-225 hp (or whatever the US EJ20 will have stock). If you modify it, you'll go through the same risks as all of us with turboed EJ25. True, you will have thicker cylinder walls, piston oil sprayers, and other stuff that will allow the EJ20 to handle much more abuse (detonation) before it grenades. But you will also have to run much more boost (lower compression, less displacement) to get the same amount of torque/horsepower.

Personally, I don't think it's worth the cost and effort.
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Old 08-31-2000, 07:09 PM   #13
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Maybe Shiv's kit?
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Old 08-31-2000, 07:58 PM   #14
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Any of the turbos out there will do 300hp...just ask all the people on this board who have had no problems for years (Adam, Richard, etc).

Of course, Shiv's kit comes with the TEC-II, which is very nice to have, and IMO, increases reliability immensely.

By the end of this thread, you'll be an EJ25 convert too ;-)

Sean
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Old 08-31-2000, 08:07 PM   #15
Tim Prudence
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Doesn't the JC kit use a T28, I don't know if that will flow enough CFM's for 300 hp.
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Old 08-31-2000, 08:32 PM   #16
bill harvey
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hey who is this shiv guy and he has a kit now??? shiv is that web page done?
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Old 08-31-2000, 08:39 PM   #17
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Shiv super duper website can be found at http://www.vishnuperformance.com .
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Old 09-01-2000, 01:13 AM   #18
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Post EJ25 and 2002USWRX engine swap???

I am curious to know how many others have thought about swapping their RS engine for the north american EJ20.

I know the US WRX is going to be slightly wider and longer than than the RS, but I don't know how this will effect the size and placement of the EJ20. Does anyone know if the engines can be swapped with 'minimal' modification...? I like the idea of having an emmisions legal, factory turbo for my RS, however, if the changes end up weakening the car, I would rather stay normally aspirated.

I just got my '00RS two weeks ago and so far it's the best!!


... doesn't mean I won't need more power later... when the funds become available!
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Old 09-01-2000, 01:45 AM   #19
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now way,... you guys just feel bad that you guys wased money on a fat RS. The truth is that the 2.2L is where it's at, up to 406 bhp
(not recomended though). you get a used L for 6000 and supe it up! tec-II $2000 and turbo (make one your self customized by Turbonetics!) $1700, intercooler $900, and pay a guy to put it in because you'll have no idea what the hell to do $2000 (guess...)

still comes out to a modest 12000-12500 not bad for a 280bhp (at normal conditions) car.

just felt like saying that, please don't shoot me!!!!
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Old 09-01-2000, 01:53 AM   #20
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Hmmm, yes I did think of doing that, the plan was to wait for the USWRX to come out & swappo baby.
I checked w. a Sube dealer that has a rally car w. a 2L swap & they said, it's not going to be any simpler than doing a Jap EJ20 ... ??

Until someone has access to a USWRX's exact specs / construction details, I don't think we can know for sure.

Just thought I'd let you know what I was told anyways.

Good Luck
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Old 09-01-2000, 01:57 AM   #21
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Shiv, what about the Japanese or UK owners who have raised the EJ20's compression ratio or used the 2.2L conversion? They are running less boost and still retaining great performance. The 2.2L conversion is too expensive to consider right now but the raised compression ratio sounds like a better idea. The main thing is the costs involved in 2.5L engine. In order to add a turbo and clear up the tuning problems and the MAF then I will need a replacement ECU. That adds an additional $2K onto the price of a turbo kit for the EJ25. With the crap paint of the RS I would rather get the car repainted with that $2K. If a US EJ20 can be found for a reasonable amount then I will do the swap. Not looking to be the fastest Impreza but I at least want a car that is faster.
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Old 09-01-2000, 08:18 AM   #22
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You guys got it all wrong!!! Swap in that 3.0 H6! It will blow everything away! Shi why stop at 2.5? go with the 3.0 H6 too! I'm sure you can tune that Outback to eat up that lil RS project of yours right? afterall it has another .5l to go and 2 more cylinders. Hmm....why stop there? let's go all the way to 5.7l engine!
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Old 09-01-2000, 08:41 AM   #23
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Gambit:
The problem with that logic (joking or not) is that the 3.0 H6 is a fair bit heavier than either or the 4 cylinder engines. The 2.5, on the other hand, is just about the same weight as a 2.0.

RallySport: The EJ20 isn't steel... And Trey from Cobb Tuning will argue all day that the EJ20 (later, non-closed deck) engines aren't that different from the EJ25 that we get.

[This message has been edited by Marquis (edited September 01, 2000).]
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Old 09-01-2000, 09:58 AM   #24
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WOW... You guys might be right... Just to note, I had talked to someone about the 3.0 flat 6 conversion. They used the same arguement about displacement... but I wouldn't, like mentioned before, agree with slappin on the extra weight even though 300 super reliable horse would be nice.

Note to Shiv -- I love the Project impreza and I have followed along from the start... unfortunately, doesn't mean I could do what you have done. A mech-e degree and a lot more time in a shop might help!

Thanks for all the posts! Glad to know that a lot of you feel very strongly about the integrity of the EJ25. From what I heard from you guys I might wait for a few years till the warranty expires, than I will go ahead with a turbo kit...

...unless of course all your cars blow up by then!!! Just Kidding!!



[This message has been edited by RallySport (edited September 01, 2000).]
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Old 09-01-2000, 10:09 AM   #25
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Uhm....the new H6 is less than an inch longer! It weights about the same apparently. And so Subaru claims. So there....
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