i just purchased a JDM ej20t and plan on putting it in my 94 legacy turbo.

 

 

any one done this? if so gimmie some tips/tricks!!!

 

thanks -dan

Theres some really good info over on Legacy central

 

do a search for wiring diagrams, or check out the FAQ, its near the top

Thanks

Gee, you don't have to go there!!!! Gee Noah, thanks!!!!

 

Yes it has been done, and I took part in (was that brains behind) the conversion. It is actually very easy, and there are two ways to do it. The easiest way is to swap the intake manifolds, that way you'll get the coil at the top of the engine to replace the coils at the plug on the EJ20 (if it is in that configuration, they came both ways). If you want to keep the coils on plugs, you will have to create a new manifold wire harness (not as hard as it sounds) and add two wires to the plug for the ECU, then swap ECUs. The car that we did this to is Mark's rally Turbo Legacy.

well i will probably have to be in contact with you in the next few weeks when i get this all started.

 

i plan on using the intake manifold and coil packs that come on the ej2ot along with the air to water i/c that comes with it

well i will probably have to be in contact with you in the next few weeks when i get this all started.

 

i plan on using the intake manifold and coil packs that come on the ej2ot along with the air to water i/c that comes with it

Sounds like you have an EJ20G out of a Legacy, do you know what year it is? Did you know that the water-to-air I/C requires an additional radiator (silimar to the A/C condensor) and an electric pump to cycle the water?

yes i knew about the pump and the radiator for the awic-im hoping that the package i bought includes these items...i hope so

 

 

as for the year, its out of a JDM 2004 legacy wagon

 

 

if it doesnt include the parts for the awic, what shoul i use?

 

i was thinking a small oil cooler or power steering cooler, with a bilge pump for a boat......

Are your getting the front clip (everything from the doors forward) or just the engine. If you get the front clip, it should have everything you need. I've seen a post on NASIOC a few years ago the showed an alternate for those parts (at the time there were many JDM engine and trannies coming over with the awic and nothing else), I don't that it is still there, but someone there should know about that.

Just out of curiosity, what is the advantage of using the EJ20 turbo as opposed to the EJ22 turbo? I always thought the EJ22 turbo was a pretty stout engine, with the clsoed deck and all.

the jdm ej 20 im using is closed deck as well

 

but you are right to assume thatin most cases the 22 is more desirable

 

i am using the 20t because it is more powerful in base form, easier to produce high numbers, availiability of parts is phenominal

 

and i paid 800.00 for a jdm legacy front clip!!!

OK, I wasn't aware that the JDM EJ20 was a closed deck block. Sounds like a great swap!

 

the jdm ej 20 im using is closed deck as well

 

but you are right to assume thatin most cases the 22 is more desirable

 

i am using the 20t because it is more powerful in base form, easier to produce high numbers, availiability of parts is phenominal

 

and i paid 800.00 for a jdm legacy front clip!!!

well im not pos. ive been told it is be several people including a subaru tech., but even if it isnt, it is a semi closed, as subaru always upgraded turbo blocks

so, what i need right now (dr.rx) is to know what i need to keep off of the ej22....intake? harness? um..stuff?? power steering stuff? alternator?

 

lemme know and the rest will be sold really cheap

Not all JDM EJ20's are closed deck, they also come in open and semi-closed, since your's is a newer version, it is more likely semi-closed. I wouldn't sell anything until after the conversion. $800 is a great price for a front clip, especially a 2004. That is want I used to pay for just the JDM Legacy engines and trannies alone. I was thinking that you were getting something closer to that same year as your car, there may be some major re-wiring needed. When we did the conversion in the US model turbo Legacy (a 91 or 92) we used a 94 JDM WRX setup. The connectors on the ECUs were the same, they may not be on the 2004 JDM.

poo....guess well see when it gets here