nerpel Posted October 11, 2018 Share Posted October 11, 2018 Please can someone tell me for sure if i can swap a ej2.2 sohc engine from a 96 automatic impreza into my m/t 04 Forester with a ej2.5 sohc engine? Yes i do have the full wire harness and ecu from the impreza as well. Please let me know ASAP thanks in advance. Quote Link to comment Share on other sites More sharing options...
wtdash Posted October 11, 2018 Share Posted October 11, 2018 1. Yes, if you plan to replace the ENTIRE harness, it MIGHT work. 2. You likely will have wiring, sensor and all kinds of other headaches. Have you been doing swaps for years and can do it in your sleep?Although everything should bolt together, the wiring is way different, both ON THE ENGINE, ON THE TRANSMISSION and between the ECU, TCU (trans computer), and DASH harness. 3. Likely won't pass emissions testing. 4. Likely will not run correctly. 5. It's just a bad idea. 6. Main issue is you're 'crossing phases'. '96 is a Phase 1 Subaru electronics; '04 is Phase 2. 2 Quote Link to comment Share on other sites More sharing options...
3Pin Posted October 12, 2018 Share Posted October 12, 2018 Don't do it. It will be a royal mess. Sell the harness and engine to volkswagon guy looking to do a swap. Source an engine for the forester instead. Much easier IMHO. Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted October 12, 2018 Share Posted October 12, 2018 No. Just no. That is all. 1 Quote Link to comment Share on other sites More sharing options...
nerpel Posted October 12, 2018 Author Share Posted October 12, 2018 I was not planning on swapping the auto trans as well i just stated they the ej 2.2 came from an automatic impreza. So that being said it's still a no go? Quote Link to comment Share on other sites More sharing options...
el_freddo Posted October 12, 2018 Share Posted October 12, 2018 Why would you want to drop to a smaller engine? You could put the ej22 block between the ej25 heads. No need for wiring stuff then. Cheers Bennie Quote Link to comment Share on other sites More sharing options...
comatosellama Posted October 12, 2018 Share Posted October 12, 2018 6 hours ago, el_freddo said: Why would you want to drop to a smaller engine? You could put the ej22 block between the ej25 heads. No need for wiring stuff then. Cheers Bennie Without a turbo that would probably be dangerously slow, the compression ratio would be way low Quote Link to comment Share on other sites More sharing options...
bork Posted October 13, 2018 Share Posted October 13, 2018 (edited) On 10/11/2018 at 9:15 PM, 3Pin said: Don't do it. It will be a royal mess. Sell the harness and engine to volkswagon guy looking to do a swap. Source an engine for the forester instead. Much easier IMHO. Explain? Vw guys use 2.2 into a VW? ON Edit: Disregard question, I found on search. Edited October 13, 2018 by bork Quote Link to comment Share on other sites More sharing options...
idosubaru Posted October 13, 2018 Share Posted October 13, 2018 That will reduce displacement, and compression or electronics, on a heavier and more ground clearance car. One guy ran low compression turbo pistons, many said it wouldn’t be drivable, and he said it was fine to drive around. But he didn’t change electronics, vehicle weight or displacement. Quote Link to comment Share on other sites More sharing options...
el_freddo Posted October 16, 2018 Share Posted October 16, 2018 On 10/13/2018 at 1:02 AM, comatosellama said: Without a turbo that would probably be dangerously slow, the compression ratio would be way low Maybe, but theoretically it can be done. I’m still wondering why you’d want to reduce displacement... Cheers Bennie Quote Link to comment Share on other sites More sharing options...
iriejedi Posted October 30, 2018 Share Posted October 30, 2018 I've done it. I used a CMC machine to make manifold adapter plates so that the original 2.5 intake can be used. Also I needed to shave a few mm of rubber fron the 2.2 timing belt to fit the 2.5 cam and crank gears (those have to be swapped as well) but it works. Kind if shitty in the hole but hauls rump roast above 2800 RPM's. Still not worth it. Gas mileage isn't as good as original 2.5 either. I suppose mine has more tweeking to do but it's much easier to go to the junkyard and get another 2.5. Especially if your's is the non EGR 2.5 variety of 2004 engine. Those are around more and easier than screwing with a custom project unless you just want to play around and whatnot. Quote Link to comment Share on other sites More sharing options...
iriejedi Posted October 30, 2018 Share Posted October 30, 2018 (edited) PS. "Rump roast" was not the word I used.... Interesting filter. Lol Edited October 30, 2018 by iriejedi Quote Link to comment Share on other sites More sharing options...
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