i have a 97 legacy awd wagon with a 2.2 and a 5 speed. the engine is junk and i've run accross a 2001 with a 2.5 and a 5 speed would that engine and trans work in my car? i was told that the 2.2 and 2.5 ecu will work both engines is that true?

 

thanks steve

it should work but the 99-01 motors are a bit different than the 97, but i cant think of anything that will hold you up in that swap. i personally wouldn't do it, as the 01 2.5's have headgasket issues. you'll sacrifice some reliability and possible costs down the road for not much horsepower. i think you're aware of that, but if not just search for "2.5 headgasket" or "EJ25 headgasket) on here or the internet and you'll find plenty of info.

The fuel managment system on your '97 is MAF based were as the '01 is a speed/density based system. So no, it will not work.

 

EDIT

Maybe it could. But it will not be plug and play like the 2.5L DOHC to 2.2L swap.

 

You could use your existing MAF sensor and wiring.

You would have to swap ECT sensors, and add a sender for the temp gauge to the '01 engine.

Swap knock sensors.

But then you are left with different IAC, TPS, and fuel injectors. Then the little annoying things like EGR and EVAP emissions items that may or may not effect drivability to much but can leave you with a CEL illuminated all the time.

Beyond adressing the other issues posted by others in doing the exchange, you may want to consider replacing the head gaskets on the replacement 2.5 motor before installing it in your '97. No easier time to do it, then when it is sitting on an engine stand.

The fuel managment system on your '97 is MAF based were as the '01 is a speed/density based system.

Good note. It would be more 'plug and pray?'

 

The EJ22's should be somewhat readily haveable from salvage yards and such. If you want top notch http://www.ccrengines.com can help you out.

stay within the 1996-1999 range, either 2.5 or 2.2L. It will make life a lot easier to install.

 

nipper