February 20, 200719 yr The Loyale is a bit short on power, and the local junkyard has a 1995 EJ22 lounging around. Gears start turning... I've looked over the PDF of the swap directions, and it looks fairly reasonable, but I still have a few questions. 1. This is my year round people/stuff hauler. I'm a BIG fan of the AC. How do I go about keeping the AC with the EJ22 swap? If I can do it without breaking the system open (using the EA compressor), I'd like to do that - I like my R12. I haven't seen much on this discussed, it seems most people just pull the AC out. 2. If I do keep the AC, how do I feed timing data to the Megasquirt? The normal Ford pickup seems to go where the AC belt runs. 3. How much difference in power is there between the Legacy ECU (with a cammed EJ22) and a well tuned Megasquirt? Thanks! Hopefully this will be my summer project. -=Russ=-
February 20, 200719 yr I'm not sure about the compressors. but I know there were at least 2 different compressor types on both engines. so that'll depend. but, unfortunately, I doubt it would work. why Megasquirt? there are dozens of standalone options for the EJ motors, none of which involve any messing with sending units or anything. there are whole sections on it on nasioc, rs25, etc. IMHO, stock ECU with a piggyback (like the Perfect Power) is the best option unless you're going for 400awhp or more. There's a guy on Nasioc who's pushing 22psi through an open deck EJ22e block with ej22t crank and pistons, DOHC heads and intake mani, and stock EJ22e ECU and a perfect power. getting about 300awhp, and even more torque.
February 20, 200719 yr Author I'm not sure about the compressors. but I know there were at least 2 different compressor types on both engines. so that'll depend. but, unfortunately, I doubt it would work. Would it be possible to use the EJ compressor with the EA system, then? I need to maintain AC for this car - Iowa summers are too hot for my ferrets without AC. why Megasquirt? there are dozens of standalone options for the EJ motors, none of which involve any messing with sending units or anything. there are whole sections on it on nasioc, rs25, etc. IMHO, stock ECU with a piggyback (like the Perfect Power) is the best option unless you're going for 400awhp or more. There's a guy on Nasioc who's pushing 22psi through an open deck EJ22e block with ej22t crank and pistons, DOHC heads and intake mani, and stock EJ22e ECU and a perfect power. getting about 300awhp, and even more torque. Interesting. I'm going for about 180-190hp, so the stock ECU should be able to handle that? Can I use a SAFC-II on the EJ motors? I've used one on my RX-7, so I'm familiar with it, but I didn't even think about it, since the EAs have a 10v sending unit for airflow & don't play nice with the SAFCs. -=Russ=-
February 20, 200719 yr I'm not sure about the compressors. but I know there were at least 2 different compressor types on both engines. so that'll depend. but, unfortunately, I doubt it would work. why Megasquirt? there are dozens of standalone options for the EJ motors, none of which involve any messing with sending units or anything. there are whole sections on it on nasioc, rs25, etc. IMHO, stock ECU with a piggyback (like the Perfect Power) is the best option unless you're going for 400awhp or more. There's a guy on Nasioc who's pushing 22psi through an open deck EJ22e block with ej22t crank and pistons, DOHC heads and intake mani, and stock EJ22e ECU and a perfect power. getting about 300awhp, and even more torque. He's also doing a dual setup with SC and Turbo....
February 20, 200719 yr Yes it can be done.I have seen a ej converted ea82 with working a/c.it was done by using the ej compressor and fitting the ej ends onto the ea hoses[ground off ea ones and ej ones recrimped done by a hydraulic hose specialist]The ea wiring was used to fire the system up it didn't have idle up control but this was accomplissed by using the cruise actuator.A mate has seen the ea compressor grafted onto a ej motor but it requires custom mounting brackets.
February 20, 200719 yr The Loyale is a bit short on power, and the local junkyard has a 1995 EJ22 lounging around. if i remember right 95 legacys are OBDII, interferance. not a good idea. you will need to find a 89-94 EJ22... -=Suberdave=- www.suberdave.com
February 20, 200719 yr He's also doing a dual setup with SC and Turbo.... yes, but nonetheless proves that a perfect power added onto a stock OBDI ECU can put in enough fuel for 22psi. good catch dave! yep, your '95 will be an OBDII which opens up a whole new can of worms wiring wise. a pre-1994 legacy is a much better donor. Syonyk, I don't know almost anything about the standalone possibilities, but you'll find more info than you'll know what to do with here: http://forums.nasioc.com/forums/forumdisplay.php?f=80 http://www.rs25.com/forums/forumdisplay.php?f=72 and for N/A specific stuff: http://www.rs25.com/forums/forumdisplay.php?f=5 IMHO 180-190 hp (even at the crank) is alot to ask from a N/A setup.
February 21, 200719 yr Interesting. I'm going for about 180-190hp, so the stock ECU should be able to handle that? Can I use a SAFC-II on the EJ motors? I've used one on my RX-7, so I'm familiar with it, but I didn't even think about it, since the EAs have a 10v sending unit for airflow & don't play nice with the SAFCs. -=Russ=- Remember you'll be using the ej wiring and maf sensor, it is 12v and i've seen people using an Safc with them
February 21, 200719 yr if i remember right 95 legacys are OBDII, interferance. not a good idea. you will need to find a 89-94 EJ22... -=Suberdave=- www.suberdave.com Right on the wiring wrong on the interference. 96 is the change year to interference. All Subaru engines except the EG33(SVX) are starting with that year.
February 21, 200719 yr Wheres this pdf you talk about? stickied at the top of this forum: http://www.ultimatesubaru.org/forum/showthread.php?t=69741 it's not entirely complete. I've got some more pictures to add, Shawn made a correction about the radiator hoses in that thread, so be sure to read that too. Hoping to get some time next week to get it really finished and uploaded to the school server for a better host. than I'll post it to the USRM too.
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