WRX engine swap?
 

this isn't something I'm doing, nor would have the funds to do, however, I am curious to know how much information there is on something like this. Has anyone figured the specifications to make this happen, or possibly looked into doing it? If so could you post your intensive knowledge on here, I am very curious to know a bit more about something, such as a WRX engine in an SVX.

well i suspect that if you put in an sti swap you will have extra room for a bigger turbo or turbo's..

It would probably be better to go with a STI swap.
2.5 compared to a 2.0 :cool:

Well....you can essenitially bolt it right in. Problem comes with making the motor run, and all your other **** work at the same time. youd need pin outs for both ecu's to see if the imprezza ecu can manage the svx's other systems....Or possibly even use both in conjunction with eachother (Once again, pinout diagrams of both ecus would be needed) OR you can try to wire in a standalone to the new motor (There should be plenty of kits available for the 2.0 and 2.5l motors) and make THAT work in conjunction with the svx

Other than the wiring nightamare, it's a piece of pie

2006 and up wrx and STI share the 2.5 block. compression is slightly different but the internals are basically the same.

<<well i suspect that if you put in an sti swap you will have extra room for a bigger turbo or turbo's..>>

it gives you about an extra 6" of space, but thats found in the front of the engine. great for a large FMIC!

It also helps with weight distribution as well being that the theres less mass hanging over the front axles.

There is also the fact that most of us old fogies would consider putting a 4-pot into a luxury six cylinder coupe a retrograde step.....

:p:lol:

How about I cram TWO STi engines into a SVX:D...then we'd have a Flat 8 :D:D

What's someone of your generation doing feeling respectable in a car with less than 8 cylinders, anyway? :lol:

Space isn't an issue... There'll be tond of space in there no matter what Subaru engine you decide to put in there. If my memory serves me correctly, the EG33 (while no longer the "biggest" engine Subaru ever made) was the largest, dimensionally. This is mainly due to the valve covers at the front of the engine (when you compare it to the EZ series 6 cylinders which have a chain driven valve train)...

Definitely a 2.5 would be my choice for the greater low end torque... However, I don't think that anyone will doubt that the 2.0 has the potential for power to haul the SVX around alot faster than the current EG33... Starting off might be alittle tricky in the 2.0... I wouldn't call it a problem though if you mate it with a 6MT and a nice beefy clutch between them... 4,000rpms and come out of it like you stepped on a burning pile of dog crap... That'll get the car moving no problem...

They are internally similar, but not the same. The EJ257 has a few features that the EJ255 doesn't have... But all things considered, unless you are thinking about going above 400 crank HP (which isn't hard in those engines at all) then it would be easier and cheaper to just get ahold of an EJ255 (used in the 2004+ Forester XT, 2006+ WRX, and Legacy 2005+)...

-----------------------

To the OP... Yes, the task of getting the engine in there is completly possible and probably wouldn't be that hard of a custom job. The tough part that would be tough (the part I wouldn't touch to save me even if I was burning alive in gasoline) would be the electrics. It would be my bet that unless you are an electrical engineer or just have no friends and no life (an EE pretty much has neither :rolleyes: ) then you will get the engine in but you'll have no HVAC function and most likely no dash...

Because of this I wouldn't do the swap unless I was trying to turn the car into a track car for weekend motorsport events. And to be very honest, there are FARRRR more capable cars out there that I'd turn into a racecar before looking at an SVX as one... Yeah the speed of one of the Turbo EJ motors would be great, and if you have about $10,000 to blow on it I say go for it!... Cause that's about what it's gonna cost (atleast)... But knowing how "tight with money" most of us are, I doubt anyone is willing to invest that much money on their SVX... Who knows though... Someone is bound to do it eventually...

Apparently there was a guy in GA who bought Jason Porter's ("Porter" on here) old blue SVX and was going to do exactly what I described above. However something happened with his funds and he never got around to it...

~ Chris

I know that it seems like all out blasphemey to do it. I've considered it for multiple reasons however. One, it's not like WRX's have a "ricey" engine, the thing packs some HP. But more importantly, seeing as how the svx has such poor overall fuel efficency, I was looking into possible economic gains. Idk if this is even worth looking into but I'd like to possibly boost mine.:rolleyes:

City/Hwy for STi is 18-23/21-29


Engine, tranny to handle it - standalone setup, reduced height springs ~10,000


It would only take a few million miles to break even!


-Patrick

If you were REALLY looking for better fuel mileage, you'd want to drop a NA 2.5 in it (or 2.2) with a lower geared tranny to better mate with the reduced power....then you could even run regular fuel, instead of the premium fuel the SVX AND WRX requires....

Touché is the word here
 

Oh, Damn. That was funny. Really really funny.