Im trying to gather some info on older jdm ej20x engines. I've read some info that some blocks were closed, some not. I guess im just fishing for info on older wrx engines, sti v 2 - 7, major differences, etc..

Thanks,
AspenGC8

hopefully, i'll be getting this 2morrow....ej20 motor in 2001 2.5 RS

hopefully, i'll be getting this 2morrow....ej20 motor in 2001 2.5 RS

Is that pic of Ryan's car that works at the Irvine Subaru dealership?

yeah..his name is Jeff though...

here is a conversion we just finished...

http://www.licmotorsports.com/projectcars.htm

-Noah

cool info...

however im lookin for some stuff more specific like internals and what not..
how different are teh version 4-7 cams, internals, etc...

im planning on doing a swap, just want some more info on older sti versions

Cheers
AspenGC8

yeah..his name is Jeff though...

Doh! My bad... ;)

Version 7 is not even closely the same as Version 4-6. If you make JDM motor comparisions V7 motors are completely redesigned internally while V4-6 are more similar.

Version 7 is not even closely the same as Version 4-6. If you make JDM motor comparisions V7 motors are completely redesigned internally while V4-6 are more similar.


meaning 4-6 internals are not as stout, and the cams not as aggressive?

meaning 4-6 internals are not as stout, and the cams not as aggressive?

No, just saying that they cannot be put in the same category as the Version 7 motor because the Version 7 motors are different in many ways. The general idea is the same. The motor is itself is different.

http://www.ravensblade-impreza.com/

this site has a lot of info on the different models

The best two pages ive found about JDM motors:

http://www.catherineandken.co.uk/sti/engine.html

http://homepages.ihug.co.nz/~1amiga/ej2o.htm

The old EJ20G's are closed deck, but have hydrolic lifters in the DOHC heads. The best heads are the V8 spec-c heads. The best blocks are probably the Legacy Turbo 2.2's actually.

i think his block in his ej20g is alittle better than the ej22t because the pistons are forged and not cast but your right about the heads

i think his block in his ej20g is alittle better than the ej22t because the pistons are forged and not cast but your right about the heads
I was talking more about the block design than the pistons, because the closed deck ej22t has oil squirters and just in general can put out more power more reliably for a turbo application.

here is a conversion we just finished...

http://www.licmotorsports.com/projectcars.htm

-Noah

Why was the dash out of that car? Just Curoius. We never take the dash out when we do wrx motor conversions. EJ20 in a GC8 sure hauls butt thought!

-Rick
http://www.fi-systems.com

Because with the dash out it makes the wiring work far easier to do, and easier to do right. Every USDM swap ive seen that was done properly has had the dash removed in the process...

Because with the dash out it makes the wiring work far easier to do, and easier to do right. Every USDM swap ive seen that was done properly has had the dash removed in the process...

I wasn't hatin'- it was just a question. I try to learn something new every day!

I guess you haven't seen the ones that come out of our shop. :) I have just never seen the need to remove it. I guess it would make it easier to run the section of the harness over to the driver side, but why make more work for yourself? To each his own, I guess.

-Rick
FIS

I like things easier too. Thats why my swap wont require any wiring :p

Yeah, that whole not having a turbo bit sure simplifies things. :p

Yeah, that whole not having a turbo bit sure simplifies things. :p
Exactly :D

Yeah doing a USDM RS to WRX Swap i can see how it's possible to not take out the dash. But doing a ver7 sti swap, you have to take it out. All the wires you need are not located in the passenger footwell.

As for removing the dash, I do this on each conversion and have for all 15 of them. Basically, I remove what is no longer needed and replace it with the essentials which works just as it would in a factory WRX. This is what I consider to be the difference between a swap and a conversion. Keep in mind I have only done MY02 and up OBDII systems. Whether it be USDM or JDM, the process that I use makes this conversion 50 state legal and actually gets a certificate and sticker from the State of California stating so.

I'm not knocking people for doing early version swaps, but would like people to know the difference. When it comes to wiring, there just isn't any comparison.

Anyways, I made one of my few appearances ;)

-Adam

I just got a 2.5 and im thinking of putting in a jdm sti. is it possible to also have the 6 speed tranny in it too?

http://forums.nasioc.com/forums/showthread.php?t=605395

To answer your question simply, Yes it can be done. When installing a 6spd into a GC8, it's actually easier to first do the tranny, then the motor. This how I usually do them, since they usually are being done at the same time :)

-Adam

That's strange i find it rather simple to drop them in together. Aside from the shifter needing to be held it was just fine.