grounded1 Posted February 26, 2004 Share Posted February 26, 2004 A question for the Subermen. Are all EJ22 SOHC n/a engines interchangeble. EJ22 seems to the same up to 96 and then there is another engine ID number for another ej22. Basically I'm asking because I've come into possesion of a pretty decent EJ22. It is SOHC, naturally aspirated and to my eye the same as in my 91 Legacy. I just wondered if there were bolt pattern differences to the tranny or any other incompatibility before I tear it down and start doing a rebuild. I have to get the ID numbers off of it to determine the year. Even then I have to find out if it's useable for my 91'. If it is useable I plan on a hell of a rebuild. Any help with the compatibility info will be appreciated. Fingers Crossed, Pat Quote Link to comment Share on other sites More sharing options...
JonOfScio Posted February 26, 2004 Share Posted February 26, 2004 N/A EJ22 engines should swap from car to car without requiring to change the ECU. I'm pretty sure anyhow, but don't make it written law or anything. Quote Link to comment Share on other sites More sharing options...
Setright Posted February 26, 2004 Share Posted February 26, 2004 I think that they lost hydraulic lifters in 1997. Quote Link to comment Share on other sites More sharing options...
ScoobySchmitty Posted February 26, 2004 Share Posted February 26, 2004 Hell, you could go find an EJ20T out of a WRX and drop that in. I'm still looking for that blasted magazine that had the article on how to do that (Sport Compact Car) but no place around here sells it! YEAAARRRGGBLE!!!! Quote Link to comment Share on other sites More sharing options...
Nug Posted February 26, 2004 Share Posted February 26, 2004 90-94 are all the same, 95+ to ? have EGR valves, and i think maybe the ecu/wiring changed at that point. I don't know. Quote Link to comment Share on other sites More sharing options...
grounded1 Posted February 26, 2004 Author Share Posted February 26, 2004 I have the serial number of the engine (024132). I have to try to find out if I can determine what year this engine is. So far the engine looks identical to mine. Tomorrow I'm going to see what the part numbers of the electrical components are. I might be able to cross them with the Suby parts book and get an idea of the year. Does anyone know if all the EJ22's have open decks or was there a year they went to closed deck. I know the 2.5 did. I'm going to start tearing it down in the mean time. Pat:cornfuzz: Quote Link to comment Share on other sites More sharing options...
grounded1 Posted February 27, 2004 Author Share Posted February 27, 2004 Got some answers finally. Semi official sort of. Bumped into a friend of mine with a solid connection with North Coast Subaru in Long Island. The story is that all the EJ22's are interchangeable with the exception of some electrical harness configurations. The blocks all interchange. Since I would swap my electrical over to the new engine this is no problem. Yeah baby! The guy there also stated that the EJ25's are also interchangeable minus the electrical differences from model to model. Thats good to know too. Either way it's time to give the ol' wagon some attitude! Thanks for all the help guys. Pat ..................................................................................... Quote Link to comment Share on other sites More sharing options...
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