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Old 08-08-2013, 06:08 AM   #1
Arseezy
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Default Usdm Ej05 Vs Jdm Ej205 Non-acvs

So I've already been all around the search bar and multiple pages of Google and other WRX forums, and all I've found is USDM EJ205 VS JDM EJ205 V7 ACVS and what not. Unless I'm stupid and didn't realize that all JDM EJ205's have ACVS?

Anyway, I threw a rod thru the block about a month ago, and it's about that time to buy a replacement engine.

I ran across this on ebay: http://tinyurl.com/lq6379x

(
http://www.ebay.com/itm/JDM-02-05-Subaru
-Impreza-WRX-EJ20T-Turbo-Engine-EJ20-2-0
L-Forester-EJ205D-Motor-/190876359989?pt
=Motors_Car_Truck_Parts_Accessories&hash
=item2c711e1d35&vxp=mtr)

just in case the tiny url fails.

It's a very vague ebay advertisement, but it states that apparently all I would need to do is change out my intake mani, cam gears and etc.

Not really sure why, I'm fairly new to understanding the electronics/computer part of these cars, and I have a general knowledge of the mechanics, but basically all I would like to know is, what will I need to do to get this motor into my car and not run like crap?

Thanks in advance.
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Old 08-08-2013, 06:25 AM   #2
Shortpersonbk
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Just buy a ej207, or a factory ej205 shortblock the 207 longock will run you around 3 grand if I remember right and the 205 shortblock around $1,800. Don't do that jdm 205 crap go big or just get it running solid again.
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Old 08-08-2013, 06:51 AM   #3
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Originally Posted by Shortpersonbk View Post
Just buy a ej207, or a factory ej205 shortblock the 207 longock will run you around 3 grand if I remember right and the 205 shortblock around $1,800. Don't do that jdm 205 crap go big or just get it running solid again.
My only dilemma is that this car is my only source of transportation, and an ej207 isn't in the budget right now. This is a "I need to get this car running solid as soon as possible" type of deal
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Old 08-08-2013, 12:47 PM   #4
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Anybody know how to get this kind of motor running solid in my 2003 WRX?
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Old 08-08-2013, 02:28 PM   #5
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I'm currently finishing up my 205 AVCS swap. The non-AVCS JDM motors are v5/v6 you want v7+ otherwise you'll run into issues if you plan to use the USDM harness since the older motors have a different ignition. For the 205 AVCS it's basically plug & play. If you want to use AVCS you will need a JDM ECU and a wiring kit from IAP. You can run it on the USDM ECU without AVCS just make sure you get tune ASAP.
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Old 08-08-2013, 02:32 PM   #6
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Just be careful when ordering the motor, it's best to call them and clarify what it is you want. I got the older v5/v6 205 without AVCS and wasted spark ignition but it said it was v7+ in the description. The guy tried to BS me out of returning the motor but he finally realized I was serious and swapped me for the correct motor. I just wanted to get mine running as well, this is what I done and its worked out quite well for me.
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Old 08-08-2013, 03:18 PM   #7
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Originally Posted by Von_holbrook View Post
Just be careful when ordering the motor, it's best to call them and clarify what it is you want. I got the older v5/v6 205 without AVCS and wasted spark ignition but it said it was v7+ in the description. The guy tried to BS me out of returning the motor but he finally realized I was serious and swapped me for the correct motor. I just wanted to get mine running as well, this is what I done and its worked out quite well for me.
Thanks for the info! My only problem is emissions testing lol.
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Old 08-08-2013, 07:18 PM   #8
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Definitely want the USDM ECU then. Where I live (good ol rocky top) nobody cares about emissions. Emissions can be passed with a JDM swap thought.
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Old 08-10-2013, 03:02 AM   #9
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Originally Posted by Von_holbrook View Post
Definitely want the USDM ECU then. Where I live (good ol rocky top) nobody cares about emissions. Emissions can be passed with a JDM swap thought.
So my only question is, would a v5/v6 ej205 not work with my 03 wrx?
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Old 08-10-2013, 03:07 AM   #10
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You'll need some stuff from your old motor, but yes it will work.
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Old 12-26-2013, 11:20 AM   #11
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stuff like what?

any downsides?

what about the power steering reservoir?
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Old 12-26-2013, 09:15 PM   #12
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Originally Posted by 02wagonrex View Post
stuff like what?

any downsides?

what about the power steering reservoir?
The compression ratio in the JDM motor is 9:1 and the USDM one is 8:1 so you need to get it tuned..

In japan they have much better fuel (then around where I live) and have +100 octane.. A car im looking at is a jdm swapped usdm ecu and it isnt tuned yet.. kind of a pain in the @#$ just because I know its going to get tuned right away
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Old 12-27-2013, 03:33 AM   #13
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I'm using a cobb OTS stage 2 on 92 octane. Haven't had any problems so far and my AFR's are always good. I had to swap the wiring harnesses, intake manifold, throttle body, and AC/PS pumps.
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Old 02-27-2014, 10:24 AM   #14
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I know this thread is a little old but this is information I really need. I'm still a little confused. Is there a JDM motor that will be a direct plug-n-play with a new tune using the USDM harness & ECU?

Is there a JDM swap that is as easy as the EJ207 V7 w/o being as expensive?

The motor in my 02 Bugeye w/230k+ miles went KABLOOEEY last night on the drive home (loud knocking from the bottom end so I think it's probably crank related).

I'm looking for my best option to replace the motor taking into consideration cost & ease of swap. Suggestions?

Last edited by Nudnik; 02-27-2014 at 05:43 PM.
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Old 02-27-2014, 08:15 PM   #15
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I recently spun 2 rod bearings and I found a JDM EJ205 longblock for sale that seemed like a better deal then getting a new OEM Subaru shortblock. This was put in my 05 saabaru. My longblock is a 06-07 JDM EJ205 which has AVCS capabilities. The cam sensors are different unfortunately so I just left the AVCS off.
Just need:
- A front cam positioning sensor angle adjustment bracket, leave the back 2 unhooked (you would need a add-on harness for those anyway)
- Air pump delete plates since it is a 06-07 motor
- A Block to Turbo & Avcs Oil line.

Running the motor on my stock 05 ECU, stock engine harness and had my tuner check/adjust the tune since the compression in these motors is higher then a USDM.

A V7/V8 JDM EJ205 longblock won't have the air pump holes and if you wanted avcs, you would just need the wiring harnesses from IA Performance and a JDM WRX/STI ECU.

In the longrun, getting an OEM shortblock from subaru and reusing you heads with all new gaskets and timing components is probably the best way to go. You never know the condition of a used motor by just pictures unless to completely go through that too and unless you are doing that yourself, it is cheaper to get a new shortlock.

I went through the headache of trying to figure out the best and cheapest way to fix/replace my motor. Yes, a $1300 used JDM EJ205 looks cheaper and easier compared to a $2000 brand new shortblock plus the money to put the motor back together. You could get lucky and your $1300 longblock works perfectly fine but I have a feeling that is petty rare. Here is a quick price estimation breakdown based on you doing the longblock/motor installation yourself.

JDM EJ205 Longblock:
$1300 - Longblock
$300 - Shipping
$150 - Oil Line and Cam Sensor Bracket
$250 - Retune? (That is what my tuner charges, I heard a dyno tune can be like $500+.)
If V7/V8 and you want AVCS
+$400 - Bulkhead and Engine Add-on Wiring Harnesses
+$250 - JDM ECU (Fluctuates $200-$400)
This is at a minimum, you could get a motor that needs to be completely disassembled to add cost of engine builder and possible gaskets needed. If you get a low mileage motor, it could last you a nice long while, or it could pop in 50k miles meaning you would have to go through this all over again.

Brand New OEM Shortblock:
$2000 - Shortblock
$1000 - Engine builder to clean and put original heads on, Oil sump and pan, new gaskets and timing components and any other misc parts. (Hopefully, could be a little more)
This option is initially more expensive but, you have a brand new shortblock, everything has been gone through, cleaned up, brand new gaskets and longblock hardware. As long as the builder is a well trusted and successful builder, this motor should last just as long as you original motor. Less headaches initially and less problems as long as you take care of it. You shouldn't need a retune either.

You may now think, an OEM shortblock and estimated associated cost are about the same as a V7 EJ207. Except you have to add the Wiring Harnesses for AVCS, JDM STI ECU, a $500 downpipe since the turbo is twin scroll and the stock one is JDM length so no USDM exhaust will work with it, a completely new tune for any mods, and this is a used motor again so there is a chance for unexpected problems a costs

$2000-$2500 - JDM Longblock, no AVCS, could still have unexpected problems and possibly fail in 50k miles.
$3000-$3500 - OEM Subaru Shortblock, heads cleaned, gaskets replaced, new timing components. Should last 150k+ miles with good car.
$4000-$4500 - JDM EJ207 Complete Motor, JDM ECU, Wiring Harnesses, Downpipe and possibly fail in 100k miles. (If I had the money, I would have went this way since these motors are awesome)

These are just guesses and everyone has different experiences. I am not an expert but I did go through all of this and it wasn't very fun. Good Luck.

Last edited by Saabaru300; 02-27-2014 at 08:46 PM.
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Old 02-27-2014, 09:37 PM   #16
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Don't make this harder than it has to be. I just the JDM EJ205 swap on my 02 bugeye. It wasn't hard at all. I didn't have to screw with any brackets or whatever. I swapped the knock sensor, cam pulley, and crank pulley. I used my intake and exhaust header. Everything went together pretty easy once I realized one of my little mistakes.
I bought the entire motor with 31k miles for $1200 from a jdm dealer in Dallas. I could probably do the swap again in a day. I used my usdm harness and ecu.
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Old 02-27-2014, 11:16 PM   #17
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Quote:
Originally Posted by Justin.Wallace View Post
Don't make this harder than it has to be. I just the JDM EJ205 swap on my 02 bugeye. It wasn't hard at all. I didn't have to screw with any brackets or whatever. I swapped the knock sensor, cam pulley, and crank pulley. I used my intake and exhaust header. Everything went together pretty easy once I realized one of my little mistakes.
I bought the entire motor with 31k miles for $1200 from a jdm dealer in Dallas. I could probably do the swap again in a day. I used my usdm harness and ecu.
Hey Justin, I live in Denton & work in Fort Worth. Which JDM dealer did you get your motor from in Dallas?

Also, what were your little mistakes?
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Old 02-27-2014, 11:37 PM   #18
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Quote:
Originally Posted by Justin.Wallace View Post
Don't make this harder than it has to be. I just the JDM EJ205 swap on my 02 bugeye. It wasn't hard at all. I didn't have to screw with any brackets or whatever. I swapped the knock sensor, cam pulley, and crank pulley. I used my intake and exhaust header. Everything went together pretty easy once I realized one of my little mistakes.
I bought the entire motor with 31k miles for $1200 from a jdm dealer in Dallas. I could probably do the swap again in a day. I used my usdm harness and ecu.
Yeah, my JDM EJ205 is wierd with the USDM STI style AVCS camshafts and sensors along with the air pump ports in the back of the heads which I don't know when the air pumps became a thing on the motors but it was definitely 06+. Definitely better to get the motor from an importer like you did. Got mine from another member, said it had 20k miles on it with an STI oil pan and Killer B oil pickup and baffle. Like I said, everyone has different experiences.
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Old 02-28-2014, 02:06 PM   #19
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Originally Posted by Nudnik View Post
Hey Justin, I live in Denton & work in Fort Worth. Which JDM dealer did you get your motor from in Dallas?

Also, what were your little mistakes?

I used www.dallasjdmotors.com. The prices and inventory were not accurate. Call and ask them for a price. Talk to Dzung. He is the Subaru guy.

My main mistake was not swapping over the the crank deal that the Crankshaft position sensor reads. I just swapped over the pulley. Trust me...it makes all kinds of funny noises when you don't swap that over. I also had trouble with the timing belt until I saw a video walkthrough by some 12 year old on youtube showing the proper way.

PM me if you want my number or to talk further about it. I will be glad to help anyone doing this swap. I'm no pro but maybe I can help someone to not make my mistakes. It really isn't as difficult as it seems and I used most of my USDM stuff to keep the emissions legal and no CEL's with the USDM ECU.
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Old 02-28-2014, 02:08 PM   #20
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Quote:
Originally Posted by Saabaru300 View Post
Yeah, my JDM EJ205 is wierd with the USDM STI style AVCS camshafts and sensors along with the air pump ports in the back of the heads which I don't know when the air pumps became a thing on the motors but it was definitely 06+. Definitely better to get the motor from an importer like you did. Got mine from another member, said it had 20k miles on it with an STI oil pan and Killer B oil pickup and baffle. Like I said, everyone has different experiences.
That sucks that it had to be that difficult. I guess I just had newbie luck and it just worked. I had an '05 motor so maybe that is the year to look for to keep things simple.
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Old 03-02-2014, 11:12 AM   #21
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Quote:
Originally Posted by Justin.Wallace View Post
I used www.dallasjdmotors.com. The prices and inventory were not accurate. Call and ask them for a price. Talk to Dzung. He is the Subaru guy.

My main mistake was not swapping over the the crank deal that the Crankshaft position sensor reads. I just swapped over the pulley. Trust me...it makes all kinds of funny noises when you don't swap that over. I also had trouble with the timing belt until I saw a video walkthrough by some 12 year old on youtube showing the proper way.

PM me if you want my number or to talk further about it. I will be glad to help anyone doing this swap. I'm no pro but maybe I can help someone to not make my mistakes. It really isn't as difficult as it seems and I used most of my USDM stuff to keep the emissions legal and no CEL's with the USDM ECU.
Link no workey for me
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Old 03-02-2014, 12:14 PM   #22
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Quote:
Originally Posted by Trboboost91 View Post

Link no workey for me
Are you trying it thru the NASIOC app? It won't work that way for some reason.

http://www.dallasjdmmotors.com/
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Old 03-02-2014, 01:17 PM   #23
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Dont mean to Hijack the thread but I was about to post something very similar. What is the advantage of buying the AVCS motor if you're not planning on using it? I'm looking at a EJ205 without AVCS as I'm not worried about that feature in general but other than that is there anything that makes the AVCS version easier to install? Better overall? Thanks
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Old 03-02-2014, 05:03 PM   #24
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Quote:
Originally Posted by TheRedStig View Post
Dont mean to Hijack the thread but I was about to post something very similar. What is the advantage of buying the AVCS motor if you're not planning on using it? I'm looking at a EJ205 without AVCS as I'm not worried about that feature in general but other than that is there anything that makes the AVCS version easier to install? Better overall? Thanks
9.1 CR, better flowing heads(from what I've read), OEM catless uppipe, and I think no TGV.
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Old 03-02-2014, 05:46 PM   #25
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9.1 CR, better flowing heads(from what I've read), OEM catless uppipe, and I think no TGV.
Aren't all JDM EJ205s 9.1 CR???
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