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Old 08-23-2016, 11:10 PM   #26
TheBoosCor88
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So I purchased a 05 Forester 2.5x with a hole in the short block. I am looking into this and ran into the EJ20 option. I was wondering. Does anyone know a reputable sales group for selling these. Also, is the EJ202 the same thing? Wiki says yes, and in that case I can get a six star head gasket which means I am a happy man.
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Old 08-25-2016, 06:01 PM   #27
Jlawley
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It should be the same, I used dallas JDM motors on ebay, it came in within a week and was in good condition. I dont see why it wouldnt work.

But just so people know the driver side cam shaft is not different from JDM to USDM it is a matter of difference between a automatic and manual. The automatic one is the one with the 1 2 1 3 dashes.

Also, if anyone is thinking of doing this for fun rather than necessity
dont you will lose sooooooo much low end its ridiculous.
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Old 10-24-2016, 04:29 PM   #28
kidsol138
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Question

Quote:
Originally Posted by 99foresterawd View Post
Hi,I liked your post, I did the same thing with a 99 forester and it wont fire up, any ideas or help would be awsome

I am looking at doing this to my 99 forester L with an EJ253AXZVB. Will this work for me too like the above? I can get one for 799.99 locally with Warranty. Will this work the same on a AT (TZ1A3ZC2AA?) Does this use the same timing belt kit as a EJ253? Or do I need to find a different kit.

I don't care about torque loss, I want a reliable vehicle.

A replacement EJ253 was over quoted over 4,000.00 installed, Motor alone was 1950.00.
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Old 11-19-2016, 08:13 AM   #29
cribbie
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Yeah your fine with the timing belt they are all the same!



If anyone is interested I am in the process of putting a set of these ej20 NA heads on a 2.5L to bump up the compresssion.
Stay tuned...
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Old 11-25-2016, 03:10 PM   #30
Jlawley
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okay so it has been 6 months since I did the swap and I have had one large problem. These effing valves. Like I know it is probably my fault for not cleaning it all as soon as I got it but seriously. I have had 2 exhaust valve guides drop and one valves get stuck open. and also I have this problem where the valves arent seating properly and air is getting through and making a "hissssss" sound when I crank the engine by hand. I got the valve job on all 16 valves and and it still is happening. SO I was looking into buying new springs but it is such a headache to find valve spring for a jdm ej20 SOHC
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Old 12-08-2016, 11:21 PM   #31
postwarart
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What caused the valve guide to drop?
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Old 12-11-2016, 07:20 PM   #32
postwarart
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Also, cribbie I am interested. I plan on playing with this swap in the next week.
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Old 12-13-2016, 10:55 AM   #33
SmokeCRX
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So...Ive done this swap multiple times. But Im having an issue with the most recent one...car is running really rich and giving me a p0170 code (2000 Legacy Outback). The engine runs like its off time but Ive check it multiple times and I can't figure why its doing what its doing...Im annoyed
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Old 12-15-2016, 01:04 PM   #34
postwarart
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PCV?

Also, my car is apart, currently getting ready to take out the engine for this swap. If anyone is reading this as of current, let me know what pictures you need!

(ej203 into a 2000 Impreza RS.... sigh...)
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Old 01-01-2017, 10:48 AM   #35
postwarart
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Cribbie,

could it be your text for the camshaft gears are backwards? I.E. the 1/3/1/2 is the USDM and the other is the JDM? Because that is how I saw it when I did the swap.
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Old 01-01-2017, 04:39 PM   #36
Jthurston96
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Default Didn't know it would be that easy

I've currently got a n/a 1.6 bugeye wagon and I'm looking for a swap, being in the uk it's quite difficult to be insured for a turbo due to my age so a swap is the best solution for me
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Old 02-10-2017, 07:26 PM   #37
Mitch250
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Default Ej20 swap

Quote:
Originally Posted by cribbie View Post
Hey fellas, I wanted to make a quick post on a recent swap I did over the holidays on a 2002 impreza wagon.
I picked up this car for my brother inlaw for a song and a dance. The car had 360k on the clock and had a solid body. After doing a tune up I notice the car had a miss and a real bad external oil leak at the head gaskets. Besides it needing a new clutch I thought about throwing in a new motor but couldn't find one worth trusting and rebuilding was out of the question.

So I did some homework and found that Subaru had made a NA SOHC 2.0l in japan that made 10 less hp then a stock ej25. So I called up Japan direct and they had a few of these motors in stock with low miles that came out of a 2001 JDM forester.

The plan was to swap all sensors, intake manifold, PS pump etc etc over and just use the long block.

The great part about this is I had both motors side by side and while I was waiting on the flywheel to get back from the machine shop I literally unbolted the ej25 manifold and began swapping it over along with the crank and drivers side cam gear.
What is good to note, the NA ej20 has the same duel port exhaust and because the motor only produces 10hp less there is no real issue being concerned over the size of the ej25 injectors.

With everything completed and the car back up and running I can honestly say that I will never own or drive a ej25 NA ever again. When comparing the way the jdm 2.0l NA idles and runs to a 2.5 you would swear the 2.5 is a archaic tractor engine.

I didn't take to many pictures of the swap but here is what I was able to come up with.








The bottom cam gear is out of the jdm 2.0l, top cam gear is out of the 02 2.5l. These must be swapped out along with the crank gear.



For those that are concerned about the lack tq in the 2.0l , yeah sure there is a small bit of difference but this motor is still more then capable of making a pass in 5th gear and still maintain hwy speeds while going through rolling hills without downshifting, and this is in a heavier GD chasis as well.


I got this motor for far less then $1k and comes with a 90 warrentee This was a ridiculously easy swap from beginning to end and I highly recommend this as a affordable option for someone looking to replace a tired old ej25 tractor motor.....


KCCO!
Hey I am new to this forum, forums in general. I have an 07 impreza with an ej25 that has developed a bad rod knock. Can I swap the ej25 out for an ej20? Ive found boat loads of 00 to 05 ej20's for 1100$. But the ej25's I've found have 70,000 + miles and they want over 2000$ for them. Any info would be much appreciated , thanks.
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Old 02-11-2017, 02:38 PM   #38
steamdan
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I'm trying to swap out my EJ253 in my '08 Forester X with a JDM EJ201. I couldn't afford a straight swap, so this was my choice. I'm following all of the recommendations for the swap, but my old engine has AVLS. Will I be able to get my ECU to run this engine without the AVLS?
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Old 02-27-2017, 08:58 AM   #39
Zim
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Quote:
Originally Posted by SmokeCRX View Post
So...Ive done this swap multiple times. But Im having an issue with the most recent one...car is running really rich and giving me a p0170 code (2000 Legacy Outback). The engine runs like its off time but Ive check it multiple times and I can't figure why its doing what its doing...Im annoyed
I'm having the exact same issues. Fuel trim is around -25 at idle and at 2500rpm. No fix yet?

Last edited by Zim; 02-27-2017 at 09:03 AM.
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Old 04-27-2017, 08:54 PM   #40
Jlawley
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did you remember to swap all the sensors and I mean ALL the sensors from the original vehicle?
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Old 05-12-2017, 11:42 PM   #41
Tryggs
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Can anyone tell my why you have to swap out the cam gears? I don't understand the reasoning behind this.
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Old 05-14-2017, 04:44 AM   #42
slomofo
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Quote:
Originally Posted by Tryggs View Post
Can anyone tell my why you have to swap out the cam gears? I don't understand the reasoning behind this.
The cam gear on the driver's side doubles up as a trigger wheel that sends the signal to the cam sensor. Auto/Manual trigger wheels are different and the JDM motors will be random engines, so you swap your old cam gear over to ensure you have the correct trigger wheel for your ECU.
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Old 07-31-2017, 01:23 PM   #43
N00dles3
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So we had this swap done on our 2003 Forester. EJ251 to EJ203 NA. The car won't clear a CEL P0032. I replaced the o2 sensor and it will clear for about 20 minutes.

Any other ideas to check. Do I need to look into replacing the ECU or possibly the harness the sensor plugs into?

I am going to try and reset the ECU one more time in case I didn't give it enough time the first go through.

This is driving me nuts.
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Old 08-14-2017, 11:11 PM   #44
Soupa.Subie
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what cam gears do you need to switch over from the 2.5 to the 2.0? I'm having trouble getting mine started
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Old 02-10-2018, 03:02 PM   #45
nollie13
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Quote:
Originally Posted by Zim View Post
I'm having the exact same issues. Fuel trim is around -25 at idle and at 2500rpm. No fix yet?
sometimes I wonder if i need a catch can
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Old 03-06-2018, 01:10 AM   #46
tayl0rr
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I have been seeing these motors on Ebay when looking for a second EJ251 to rebuild for my 03 outback. What is the minimum needed for the swap? Can the intake manifold from the ej251 simply be bolted on and the engine dropped in? Will the flex plate or flywheel swap out between automatic and manual?

It would be great if someone put together a sticky tutorial. The videos don't seem to work anymore. My ej251 sounds like a cross between a tractor and a diesel which sounds like its pretty typical for these engines. I enjoyed rebuilding it but tracking down the noises and determining if they are serious or not is driving me crazy!
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Old 03-30-2018, 10:49 AM   #47
noodles555
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Default carbon in intake port

i picked up jdm 203 sohc to swap into my 92-x linear and when i removed the intake it has a lot of carbon on intake and spark plugs look original is this something to worry about or is it fine?
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Old 04-07-2018, 05:52 PM   #48
Leonardo
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I might do this route since it seems to be better than the 2.2 on the OBS that I have to replace due to broken timing belt.

Thoughts?
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Old 04-09-2018, 07:54 PM   #49
Leonardo
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Ok, so swap out both cam gears and crank one or just the drivers side where the sensor is?
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Old 04-14-2018, 08:27 AM   #50
Leonardo
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why spark plugs did you guys with this swap go with, stuck to the same number as the one that came with the engine or the one you replaced as it now running the same timing of the replaced engine.
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