i was given a 90 loyal, and bought (cheeeeeP)a 87 rx. body of 87 is toast, but has xcelent motor,tranny,hi-lo diff and posi rear. 90 is spfi w/cracked head, body is great!!

 

what do i have to do electronicly, will i have to change the gas tank along w/the pump, many other questions coming as the snow melts.

 

ross

The best, and probably least time consuming, way would be to swap the entire wiring harness from the cab forward, as well as the entire dash assembly. The fuel tank doesn't need swapping, just the pump itself. Don't forget that if you put in the RX tranny, you'll need to put the rear diff in too because it's a different ratio (and has an LSD!). Another minor issue is fitting the turbo exhaust. My understanding is that it involves notching a crossmember. Not too much to worry about.

 

Ask SubaruStyles about it, I think his wagon started out w/SPFI and it now has an RX drivetrain in it.

If you have a whole RX donor car, just grab the front cross member as well. Fitment problem solved.

aside from wiring in a new harness and ecu, the fuel pump and its lines are the same, fit the same.

 

you can swap the crossmember from the rx, may as well swap the whole suspensions, since the rx has an exclusive suspension package. you also need to use the rx axles with its tranny to match the spline

 

as far as the tranny the same crossmember, clutch/flywheel, and driveshaft on the loyale now will fit the rx tranny. the center console is swappable, wire the diff lock switch to the wire for the loyale 4wd button. the 4wd is activated by vacuum on the loyale, and the same system and components work the diff lock on the rx. so all you have to do is connect the tranny to the vac lines and there is a working diff lock. you need to swap the rx shifter over as well, so you will ose the 4wd button shifter, you can use its wire to splice in the diff lock, or just let the old shift knob hang under the seat and use it.

the 4wd lite will still come on and it will represent the diff lock

 

you will have to swap over the rear diff for the gear, plus you gain lsd. you can use the existing axles so use the best of all 4. you can swap on the disc brakes but i sayt swap the whole trailing arms with the brakes in one piece, and this will have the mounts for the rear sway bar. swap over the rear coils but i think rx and wagon coils are the same in back