Calling subaru runners/fitters

andy syncro-nutz · Posted: Thu Mar 17, 2011 6:26 pm Post subject: Calling subaru runners/fitters

Im currently running a 1996 ej22 in my syncro with nearly 18k trouble free miles in the van, But now its starting to show signs of a not so well ej22, Using a little oil and giving the odd cough and splutter, Ive been more than happy with that little engine giving its all but now i feel my van would benifit from somthing a little newer, So im looking now to fit a ej25 but i dont really want to go through building a loom again And here is my question,, Can i run the ej25 using my exsisting ej22 wiring loom?
Regards Andy,

idahoskier · Posted: Thu Mar 17, 2011 7:18 pm Post subject:

You can run a 2.5 short block w/ your existing heads and create a high comp hybrid 2.5 (11:1 IIRC). I dont think you can expect to see any significant gains from this change. Particulars abound on the net for this conversion. Try searching in:

http://forums.nasioc.com/forums/archive/index.php/f-87.html

If you do it let us know how it works!
_________________
85 Westy w/ 2.2L Subaru
91 Westy w/ 2.5L Subaru - sold

GrindGarage · Posted: Thu Mar 17, 2011 7:26 pm Post subject:

I have read up on the Frankenstein and its one of those things u just gotta do to see what happens.

As for running a 2.5 with 2.2 electronics I would really like to be informed as to why not. I have never sat the 2 engines next to each other but they both need fuel air and spark. Does the 2.5 run the same impedance injectors with same connectors? Is the crank trigger or Coolant temp sensor different? If you are able to move the important senors over and run the 2.5 injectors with the 2.2 spark setup I say why not.

Many people ask about this and aways ask about the 2.2 intake mani fitting and I don't understand why you wouldn't utilize the 2.5 long-block as is with the 2.2 electronics. Is this subaru voodoo
_________________
-cliff

91 Vanagon AUTO
97 Single Port EJ22 all smallcar.com

andy syncro-nutz · Posted: Thu Mar 17, 2011 7:52 pm Post subject:

Thats my thinking too, Ive never looked at a 2.5 and my only concerns i had was if the main connectors were the same shape and all, I can only assume that 2.5 injctors are the same as 2.2inj's as this will all be adjusted via the ecu altering the pusle width according to the other sensor's, Smile

thummmper · Posted: Thu Mar 17, 2011 8:23 pm Post subject:

its obd11, so it should be okay--read up in a manual--talk to line mechs-- does the 2.5 have 2 cam sensors for the dohc? how about knock sensor?
go to outfront racing and ask ron or callem.

andy syncro-nutz · Posted: Thu Mar 17, 2011 8:38 pm Post subject:

Thanks Thumper! Unfortunately over here information on these engines is few and far between, Not to metion the looks you get when you tell them the engine is in a 20 year old syncro Confused

r39o · Posted: Thu Mar 17, 2011 10:07 pm Post subject:

Read what SammyDaFish (at end of thread) has to say about the combo in question:

http://www.sl-i.net/FORUM/viewtopic.php?f=31&t=7341

There is lots of talk about mixing parts and me thinks Sammy kinda hits the nail.

But, I do not know sheeet about these Subaruzers to know right from wrong....

"A little knowledge is dangerous."

YMMV
_________________
"Use the SEARCH, Luke" But first visit the Vanagon FAQ!

1990 Multivan EJ 22, Rancho trans 0.82 4th, Small Car front AC, CLKs w/ 215/65-16, homemade big brakes 303mm, Konis, Recaros, etc....

Click to see my ads for Cup holders, Subaru clutch fix and CLK wheels (no wheels currently)

andy syncro-nutz · Posted: Fri Mar 18, 2011 5:48 am Post subject:

@ r390; Im not getting into swaping heads and all that, Im just thinking about the engine management side of things, Ive started looking for a 2.5 wiring diagram to match my 2.2 loom now as the general concensis is that it can be done,

Cheers for tha link, Andy,

insyncro · Posted: Fri Mar 18, 2011 5:52 am Post subject:

Cough and sputter can be caused by low fuel pressure.
An aging or binding fuel pump is common in a Vanagon.
Test the pressure to see if you have the minimum needed for that motor before ditching it.

Franklinstower · Posted: Fri Mar 18, 2011 9:31 am Post subject:

all 96 to 99 electronics are the same. Yes, you can put a 2.5 in there and it should be plug and play. Get a 2.5 DOHC - change the head gaskets to cometic, bolt it up and you will be fine.

I have not done it, but I have recently read quite a bit on it.
_________________
'89 Westy - EJ25/22 Frank 4.44 5mt
'75 Miami Blue Sunroof FI Standard Bug
YITB

andy syncro-nutz · Posted: Fri Mar 18, 2011 9:46 am Post subject:

Thanks guys all this is very inspiring! Very Happy

idahoskier · Posted: Fri Mar 18, 2011 10:34 am Post subject:

Heres a guy that did it with a 1990 2.2 to 1999 phase 2 2.5 using the 2.2 loom Cool

http://www.ultimatesubaru.org/forum/showthread.php?t=83839
_________________
85 Westy w/ 2.2L Subaru
91 Westy w/ 2.5L Subaru - sold

joetiger · Posted: Fri Mar 18, 2011 10:50 am Post subject:

Franklinstower · Posted: Fri Mar 18, 2011 11:12 am Post subject:

That is too bad you just can't use the whole 2.2 intake and keep the IAC. If you could, that would make upgrading from 2.2 to the 2.5 a breeze.
_________________
'89 Westy - EJ25/22 Frank 4.44 5mt
'75 Miami Blue Sunroof FI Standard Bug
YITB

r39o · Posted: Fri Mar 18, 2011 12:00 pm Post subject:

andy syncro-nutz · Posted: Fri Mar 18, 2011 12:02 pm Post subject:

edgood1 · Posted: Fri Mar 18, 2011 3:07 pm Post subject:

I've been doing my research on this as well and yes it will work.

From what I've researched and been told, yes the 2.2 wiring and ECU will work fine with a 2.5. This applies for '96-'99. I was told that in a subaru they have to have come from the same type of tranny, auto or manual... but that doesn't apply for our conversion. You can easily change which mode the ECU is running by grounding a pin on the ECU. My engine is from an auto car and wired up to run in manual mode... so thats an easy fix.

Another thing to consider is that some subaru cars (maybe just autos?) have some extra EGR equipment and/or some atmospheric sensors. again, I don't think it matters as I've heard people just leaving them out without trouble. My conversion has them and I kept them:

Image may have been reduced in size. Click image to view fullscreen.

So in short, yes all '96-'99 2.2s and 2.5 in subaru powered vanagons should be interchangeable as long as the wiring is properly configured.
_________________
'87 Syncro :: Subaru eng
'63 Samba Conversion ::(photo album)
'65 Westfalia
'65 Bug

a914622 · Posted: Sat Mar 19, 2011 10:55 am Post subject:

Yes you can run a 2.5 on your 96 2.2 wireing. You may have to unscrew your 2.2 sensors and put them in the 2.5. The engine with the most bang for buck is the 2001-2002 SOHC.
The DOHC only use one cam sensor. If you do go DOHC stay away from the 96. The heads and pistons are one year only.

jcl
_________________
87 gl powerd buy 2.5subaru
75 914 getting 2.2t subaru scratch that SVX subaru

brent239 · Posted: Sat Mar 19, 2011 5:17 pm Post subject:

man I'd love to ditch them parts. I hate vacuum operated crap! bad news, what do you do??
only other trouble with the dohc is its an interference motor so timing belts are more important.
_________________
88 westy suby 2.5


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