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Old 12-11-2012, 09:07 PM   #1
BoostinSaurusREX
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Default 03 Wagon JDM EJ205 Swap

Hey guys, new to the forum and Subaru's entirely...

This looked like the most logical place to post this subject so here I go. So I just Bought my buddies 03 Wrx Wagon for 2k That needs work. I have always been a Honda enthusiast but Im pretty stoked about my first Subaru.

Anyways, this wagon needs work. It has 177k on the body, Motor, Tranny. Mechanic checked it out and said compression is bad in Cylinder 3 and is probably because something in there is bent, and says the clutch is slipping. So to remedy the issues I am planning on purchasing a 98 JDM EJ205 Forester Turbo with 45k miles for 1700 with the matching 5 Speed tranny. I will either keep the old engine/tranny and rebuild it or just sell it... Haven't decided yet.

But about this swap, I have been doing quite a bit of research in the past week on how to make this swap work. I Hope I am heading in the right direction with this so far and if you have any suggestions please let me know. Here is what i Have come to find out so far.


Vehicles with the EJ20T variant engines are pretty interchangeable and that it is also slightly easier to go with a slighly older JDM Engine than throw something many years newer in. So Im pretty sure I am headed in the right direction so far. (This is just going to be a daily driving family vehicle btw, no need for significant performance bolt ons....for now haha)

In order for my USDM harness to work with the JDM Engine, I will need to wire in AVCS into the USDM harness, among other wires. (planning on getting a JDM ECU to run the engine to make things easier)

Also need a 4.444 Forester rear diff to match the 4.444 Jdm Forester Turbo Tranny. Will the 03 Wagon drive shaft bolt up to the Rear diff and tranny okay or do i need to purchase one to match? Will the existing axles be usable also?

Are Exhaust parts pretty universal as far as matching up USDM pieces to JDM?

How to find Parts for this engine will probably be a discussion for a later time in a different forum but i need to get on it asap. Because it would be nice to be sure Im putting in the correct gaskets, pumps, belts, plugs when the time comes. But thats what I have so far. My mechanic will be swapping it in for me because unfortunately i dont have a warm enough facility in the winter to do it myself...

If you have any pointers or suggestions, please feel free to throw any input at me.

Thanks
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Old 12-11-2012, 09:45 PM   #2
lukeskywrx
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Not 100% sure but I do not think a 1998 EJ205 motor has AVCS, It also does not use coil on plug ignition so the ECU is not going to be plug and play like the V7+ motors in the 02-05 wrx. Physically the motor will fit however there were changes in the ECU going from the GC to GD chassis.

You need to do some research so you do not end up buying a bunch of parts you can't use.
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Old 12-11-2012, 09:52 PM   #3
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The swap that you want is a EJ207 along with the 6MT drivetrain.
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Old 12-12-2012, 06:09 AM   #4
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That motor is an EJ20G not an EJ205. It will have different compression and different sensors than your current EJ205. You will need to do a complete swap for this to work. I would stop now as you are going in the wrong direction with technology by going to the older style motor.

3. Shim-over-bucket style EJ20G usage:
Impreza WRX AT 97~98
Impreza WRX AT Wagon 97~98
JDM Forester Turbo 97~98
EUDM Subaru Impreza Turbo 97~98

Power output is 250 PS @ 6000 rpm for the Japanese versions and 211 PS for the European model. Engines can be identified by smooth valve covers, plug leads and a wasted spark coil in the middle of the intake manifold. These engines were available with both manual and automatic transmission in Japan, but generally had manual the transmission in Europe in the Impreza Turbo.
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Old 12-12-2012, 08:26 AM   #5
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I would just pull the old motor and figure out what problem with compression is. Could be a simple as replacing a valve. Lot of work but not alot of $$$. I would do a leak down test.
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Old 12-12-2012, 10:05 AM   #6
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for the same $1,700 in most parts of the USA (since your damn profile is not filled out we don't know where on the PLANET you are!!!!!) you can get a basic rebuild for that or close.

The $1,700 is JUST the physical parts. THEN add all the following:
Timing bet
water pump
complete gasket set
all filters
all fluids
plugs, wires, coils etc (aka tune up)
clutch
clutch slave line (stainless upgrade since its off obviously)
clutch slave cylinder
aluminum radiator to replace the stock plastic POS
hoses
1,500 miles of vacuum lines


huh.... sounds like 1/3 of a rebuild huh? Just rebuild the 2.0 you've got. unless you have a bad block (highly unlikely) its simply retarded to go backwards....

You are going to do the above list regardless... why do the $500+ in extra parts on a used engine when then same $$ could have you, in most cases (again we don't know where you are) a warrantied rebuilt engine...

in case you didn't get the not so hidden point FILL OUT YOUR PROFILE!

Rob
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Old 12-12-2012, 10:09 AM   #7
TXwrxWagon
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ps: welcome to the world of Subaru... get out of the "Honda JDM is yummy" mindset and come back to reality and save METRIC TONS of $$$

Rob
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Old 12-12-2012, 10:15 AM   #8
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Here is an ad on ebay for the same same engine im getting, just from a different seller (just using this reference because this one actually has a picture of the engine code). Im actually driving down to the warehouse so i can check it out in person. But this Engine has the code of EJ205D if you scroll down and look at the pictures in the link. Maybe the other dude saying it was out of a 98 forester was a typo or something. But this ad says it is out of a 99... Anyways here is the link.

http://www.ebay.com/itm/99-04-Subaru...sories&vxp=mtr
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Old 12-12-2012, 10:43 AM   #9
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Nope, see the plug wires? You want coilpacks not sparkplug wires. There are not currently any JDM EJ205 motors on ebay that I can find to even show you. They are not commonly imported because they are not worth the cost of shipping, compared to an EJ207.

This would work for you http://www.ebay.com/itm/JDM-EJ20T-VE...a8e605&vxp=mtr

You want something model year 2001+ These guys can help you out I have bought 2 spec-C motors from them http://forums.nasioc.com/forums/forumdisplay.php?f=209
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Old 12-12-2012, 12:04 PM   #10
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@ TXwrxWagon
Thanks for the welcome dude and I totally updated some profile details haha. But I have definitely considered a rebuild, and the numbers you gave me were around what i came up with also. But my problem is this. I dont have much time to work with to get this thing running. I can rebuild it myself but it would take me forever to do it haha, with having 2 small children and a busy job. So someone rebuilding it for me is really my only option right now. And the price of parts plus labor would put me at around the price of a used low miles JDM STI engine, which is what i may have to consider. Another issue is my budget at the moment is only 4k... And the engine problem is not the only thing on the list unfortunately.

@lukesskywrx
As mentioned above, I may have to buy a JDM STI engine. Only problem is I would only be able to purchase the engine and not the tranny. So I am weighing and considering all my options which means i need to do that much more research now. Funny thing though with the link you sent me, that seller is the exact seller i will be pickingup a swap candidate from. Anyways, if i went with the STI block i would have to worry about the stock WRX tranny (that already has 177k on it) holding up for 6+ months until i can afford the STI 6 speed. As mentioned before, the clutch in there is already slipping, so a new clutch would also be on the list for things i need. And would the exhaust from the wrx fit on the STI engine temporarily? Atleast until i can afford something aftermarket or stock. Im assuming i would still need to wire in the AVCS into the usdm harness to work with the JDM engine and ecu.

I would just prefer to find and buy a used same version (low miles) USDM full WRX swap. But it seems like those are harder to find than the jdm ones...
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Old 12-12-2012, 01:50 PM   #11
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Buy a rolled or salvage WRX with a good drivetrain and swap that in. Costs less, much simpler than JDM. Don't bother with an STi swap either, unless you're going all out
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Old 12-12-2012, 02:37 PM   #12
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Quote:
Originally Posted by lukeskywrx View Post
Nope, see the plug wires? You want coilpacks not sparkplug wires. There are not currently any JDM EJ205 motors on ebay that I can find to even show you. They are not commonly imported because they are not worth the cost of shipping, compared to an EJ207.

This would work for you http://www.ebay.com/itm/JDM-EJ20T-VE...a8e605&vxp=mtr

You want something model year 2001+ These guys can help you out I have bought 2 spec-C motors from them http://forums.nasioc.com/forums/forumdisplay.php?f=209
couldnt he use that longblock and his intake mani/ecu?

OP: If you dont want to do that^ and cant afford a ej207 then this is what you want http://www.ebay.com/itm/99-00-01-SUB...4c833e&vxp=mtr
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Old 12-12-2012, 04:50 PM   #13
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Quote:
Originally Posted by Paul View Post
couldnt he use that longblock and his intake mani/ecu?

OP: If you dont want to do that^ and cant afford a ej207 then this is what you want http://www.ebay.com/itm/99-00-01-SUB...4c833e&vxp=mtr
Awesome suggestion dude, my mind is racing around so much with what my options are so all the input is greatly appreciated. Plus Jersey is well within driving distance...So if what you mentioned Paul will definitely work, I will call them up as soon as I get a definite answer and buy it.

I am willing to purchase a JDM ecu though, if it makes the swap easier. But if the only way to make it work is what you mentioned above then that is fine by me.

Last edited by BoostinSaurusREX; 12-12-2012 at 05:16 PM.
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Old 12-12-2012, 06:06 PM   #14
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Ya...def wait for someone else to confirm what I said before you go buying anything..lol

If that motor has AVCS you def want the ecu with it!!
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Old 12-12-2012, 06:21 PM   #15
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Sounds good, hopefully this works out. The engine you posted have the coil packs so hopefully that solves it...
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Old 12-13-2012, 08:59 AM   #16
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A confirmation on this would be greatly appreciated since the auction ends in 2 days and I would like to purchase this engine asap for peace of mind. Trying to research this as much as i can on my end and attempt to speed this up, but im new to subarus entirely so it almost feels like starting from scratch lol.

I should be able to figure the rest out on my own though. Found a company that makes an AVCS wire up kit.
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Old 12-13-2012, 12:01 PM   #17
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contact WhiteBgeye02 on here,he makes and sells avcs wireing kits
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Old 12-13-2012, 12:38 PM   #18
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That is the correct motor you want, I would advise going to look at it before you purchase though...
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Old 12-13-2012, 05:16 PM   #19
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Sweet, I will place the bid. I called the company and i will be paying when i pick it up next weekend, so i will be able to inspect it before i commit to it.

I will definitely toss a PM at WhiteBgeye for the wire up.

The guy I talked to didn't know if he had the ECU for it, would a Ver.7 JDM STi ecu work? If he cant find the original. If not I could have the stock ecu out of the wagon tuned. Pretty sure a legit Subie tuning shop is right down the street from my mechanic too if thats what needs done.

Also, in the pic of the engine it looks like I will need a Flywheel? looked like an auto torque converter was bolted up to it...correct me if I'm wrong.

Here is the picture link so you dont have to scroll up to it...

http://www.ebay.com/itm/99-00-01-SUB...4c833e&vxp=mtr
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Old 12-13-2012, 08:57 PM   #20
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You can tune it with the stock ECU but you wont be able to control AVCS....which would kinda suck
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Old 12-13-2012, 09:18 PM   #21
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You can use the flywheel from your car. You want the avcs to be functional, it'll make a huge difference to not have avcs working. I have a spare avcs harness from whitebugeye that I'm not using. You can have it for $120 shiped, I have the installation instructions too. Good luck with your swap. Pm if interested in the harness.
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Old 12-13-2012, 11:11 PM   #22
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D-Rod I definitely agree about the avcs. And I am seriously interested in that harness so give me a day or 2 to sort some things out (still trying to find a tranny, clutch) and I will PM you for sure.

Paul I will probably just keep the usdm ecu on the side for smog reasons down the road, would rather just get the JDM ecu with avcs already on it to eliminate the headache of messing with the stock ecu for now. But would a JDM Ver.7 STi ecu work well enough? in case the warehouse doesn't have the ecu for the donor motor on hand.

Thanks so much for the help so far guys
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Old 12-13-2012, 11:48 PM   #23
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Keep the usdm ecu, you will need it later to get your car inspection sticker. Make sure not to get a ver 9 ecu, most of them have immobilizer and would become a headache. Do you know what turbo and injectors come with that engine ? Ver7 and 8 ecu's can be used on ver 7, 8 and 9 engines interchangeably when properly tuned. Make sure to properly id the ecu, get the right one. Interesting swap, subscribing to your thread, I'd like to see how it turns out.
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Old 12-15-2012, 12:54 PM   #24
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D-Rod, can AVCS be installed/pinned into my USDM ecu via tuner (scooby and evo tuner 30 seconds down the road) and use that harness you have and be done with it?
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Old 12-15-2012, 01:06 PM   #25
D-Rodman
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You will use the existing usdm harness and add a harness like the one I have but you still need a jdm ecu for avcs, you are looking vor a v7 or v8 ecu. Have never heard of been able to run avcs on a 16bit usdm ecu.

Last edited by D-Rodman; 12-15-2012 at 01:48 PM.
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