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Old 04-10-2002, 02:13 AM   #1
Numerik
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Join Date: Apr 2002
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Znki AE86
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Default Engine swaps.

Hi I am looking to do a new project car, and I was wondering about the different year Impreza's (AWD versions) and what engines would swap right in. I am looking to buy a 94-98 Impreza and swap in a performance 2.0 DOHC Turbo engine (EJ20). So if anyone can help me with years and possible swaps (any and all engines) it would be appreciated. I am also competeing with my brothers (both) and a friend's project cars.
- Mirage 2001 to an EVO 6 with a 4g63 and FWD converted to AWD, and chassis reinforcement.
- Lancer 2002 OZ Rally converted to an EVO 7.
- AE86 with the 4AGZE Twin Charged (both turbo and super charger)
Last but not least mine
- 94-96 Impreza (AWD) with a JDM STi EJ20T. (hopefully)
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Old 04-10-2002, 02:17 AM   #2
KillerTHC
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01 SRP 2.5 RS-T
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wrong forum but ok. i think all impreza engines will fit in all imprezas. you run into problems with the TT engines since 1 turbo sits where the streering column sits. if you just want a project car, get a 93 since they are the lightest due to lack of options. hope this helps.
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Old 04-10-2002, 02:19 AM   #3
Numerik
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Sorry about posting in the wrong forum, you can move it mods if you want. Also is the 93 available in AWD and if so what model thanks again.
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Old 04-10-2002, 02:26 AM   #4
KillerTHC
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93 impreza L and yes there is an AWD version.
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Old 04-10-2002, 05:43 PM   #5
BugBomb
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You will find much more info about this in the Forced Induction Forums. You will need a front cross member from a WRX to support the turbo motor. It would also be a good idea to get the tranny from a WRX. You will need to match the differentials (An N/A Impreza here has different gear ratios in the diffs) by either swapping in the rear diff from the WRX, or swapping your Impreza's front diff into the WRX tranny (Better to use the WRX diffs). That's all I can remember. Good luck in your swap.
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Old 04-11-2002, 02:59 AM   #6
HndaTch627
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sounds like a whole lot of people who do alot of wishful thinking
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Old 04-11-2002, 08:01 PM   #7
RaceCarRiot
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the lightest AWD impreza chassis is the brighton coupe...as i recall i think they were only a 96 model. someone correct me if i'm wrong. coupe, no power anything, about as stripped as one can get from the factory...only a shade heavier than the FWD chassis.

getting the engine into the car and to mate up to the tranny isn't an issue...provided you've welded in the front crossmember from a GC8 WRX, or a US legacy turbo.

you're going to need at the very least the engine, something to run it off of, and a proper exhaust.

from experience, i can tell you the JDM ecu won't work, since it's programmed to run on 100RON gasoline (about 97-98 octane). so unless you want the ECU to retard the timing like crazy, you'll have to run race fuel, or get some kind of piggyback unit like an apex'i power FC. a UK ECU and harness would work fine, except it won't mate up to things like your fuse box. and unless you want sloppy wire routing, the ECU will end up on the driver's side.

so that leaves you having to purchase something like a tec-ii, which is a chunk of change in and of itself, and then you have to find someone to set it up and tune it properly.

i've done tons of research on this myself, and had 2 friends turbo their imprezas in the last month...one going the JDM route, and one building a turbo kit. both of them have their issues, although the 2.5 kit is up and running strong. we're still waiting to see if the JDM car will run at all. supposedly it was, but only for a few minutes, since it needs an exhaust fabbed for it. it's not good to let an un-exhausted turbo idle for more than a few minutes, unless you want to find out how the firewall gets it's name.

just remember...it's not like a honda engine swap...

-adam-

EDIT: Numerik -- you don't happen to live in central FL, do you? on the way to work every morning lately i've been seeing someone driving around a dark blue mirage that they're converting to an evo V or VI.
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Old 04-11-2002, 08:45 PM   #8
Hawk296
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I am currently working on the same. 95 1.8L AWD impreza with hopefully a 2.0 from a 97 STi type RA. THe front crossmember needs to be replaced, you will need a trans and rear diff to handle the power, convert the cable clutch to hyraulic if your using and older impreza. and the thing im trying to figure out is how to run the engine. im have a jap ECU but am trying to thinkin of a way to integrate one from a US spec WRX cause that might actually work. there is a handful of other things i cant think of off the top of my head, I think even the throttle cable had to be replced cause it doesnt fit. any way. good luck.
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Old 04-12-2002, 12:06 AM   #9
NateDogg
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to make it as easy as possible, try to match the year of the motor to the year of the swap car. there are defferences in the electrical systems that you will have to worry about if you get different year motor/cars.

Nate
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Old 04-12-2002, 02:00 AM   #10
XT6Wagon
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Nate, while matching years may seem like a good idea, the problem is the Factory turbo wiring is far different than the non-turbo wiring, so you are up the creak w/o a paddle regardless.
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Old 04-12-2002, 12:39 PM   #11
NateDogg
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what i mean by electrical systems is basicaly the speedo and tach guages, some years are mechanical and some years arnt. this makes it a real bitch cuz once you have a car that runs you need to know how fast its going.

Nate
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