Engine swap 97 Legacy 2.2L with a 95 Impreza 2.2L?

[mulefoot]

I have acquired a couple of cars, one is a 97 Legacy with a bad 2.2L engine but a fairly good body on it and the other is a 95 Impreza with a good 2.2L engine but a torn up suspension and body.

 

Will the good 2.2L Impreza engine swap out with the bad 2.2L Legacy engine?

 

Thanks!

[johnceggleston]

yes BUT.....

 

the impreza may be obd1, not obd2 like the 97 lego. i don't know if it matters, but swapping the inyake will correct it if it does.

 

and if the 97 is an auto trans it will probably have egr and need that on the replacement engine. if the other engine has it you are good.

if the 97 does not have egr it really does not matter. you may have to plug a hole, but maybe not.

[johnceggleston]

yes BUT.....

 

the impreza may be obd1, not obd2 like the 97 lego. i don't know if it matters, but swapping the inyake will correct it if it does.

 

and if the 97 is an auto trans it will probably have egr and need that on the replacement engine. if the other engine has it you are good.

if the 97 does not have egr it really does not matter. you may have to plug a hole, but maybe not.

 

more awake this morning.

 

if the 95 has EGR, auto trans, (or if the 97 does not, manual trans) i would install it as is and and see how it does. the egr will be there but the ECU will not be looking for it. so no big deal. i have never worked on an ej22 without egr so i don't know all that is different. i guess there could be a vac line that needs capping off or something.

 

i don't think the OBD makes a difference, just my guess. the engine will still have all the needed sensors to run. i think the obd 2 is just more better computer and a means to report. right? so i would not swap the intake just for that. it is however much easier on an auto trans car to remove the flex plate to TC bolts with the intake off and out of the way. not absolutely necessary, but still easier.

 

if you need the EGR and do not have it on the 95 you will have to do some work or live with a cel forever. swapping in the 97 intake with the EGR will do most of it but you will need to drill and tap the driver side head on the 95. not impossible, but i don't think i would try it in my drive way, maybe a machine shop. if you screwed it up you will be buying a head, $100?. but it may be a piece of cake for you.

 

careful if you have to remove the EGR pipe from either the intake or the head. it is easy to round off the nut . there is a type of wrench for it which might be worth the price.

 

EDIT: just in case i confused you. the 95 will bolt in and run just fine regardless of the EGR. but if you need EGR and don't have it, you will have to do a little more work, or find an engine that does have EGR or live with the CEL.

Edited August 13, 2012 by johnceggleston

[mulefoot]

Thanks John! I thought it looked like it should swap out without much of a problem but the 97 is an interference engine and the 95 is not so I didn't know if there was something else that would prevent a swap. Both cars have an auto trans. As far as a CEL, I can live with that for forever and a day. If I can get this running all it will be used for is a work car for me to drive about 20 miles a day.