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Old 11-29-2016, 09:37 PM   #1
smileywagonride
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Default 2014 ej257 swap into 02 wrx

I blew up my 02 wrx 2.0 and now I have to decide on a replacement sti short block and go the 2.5 hybrid route or buy a 2015 wrx sti somebody rolled from local auction if price is right.
If I win this car at auction I plan on swaping engine, transfer case and upgrade to a six speed m/t, rear differential, driveshaft, axles, spindles, brakes, instrument cluster, radio, hvac control unit, wiring harnesses, as well as any modules needed, hell maybe even the seats they look sweet. but this would be a boat load of work. I'm wondering if I should just keep it simpler and go the 2.5 hybrid route or open up a can of worms and try to win this 2015 wrx at auction.
also wondering if anyone has bought a totaled late model wrx and what a fair price for one is.
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Last edited by smileywagonride; 01-23-2017 at 08:53 PM.
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Old 11-30-2016, 04:18 AM   #2
Krang
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Don't believe anyone has done that swap before. I'm thinking you would need to retrofit the entire wiring harness at a minimum.

If you can swap in the FA motor, that would be super cool and open up some doors for those with the earlier years that want some newer tech, but I'm sure there is a reason it hasn't been done yet.
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Old 11-30-2016, 09:17 PM   #3
smileywagonride
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sorry I should have been more specific this 2015 wrx sti has the ej257 engine.

Last edited by smileywagonride; 01-12-2017 at 09:43 PM.
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Old 12-01-2016, 08:14 PM   #4
smileywagonride
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the car sold at auction today... $7500 and after auction fees and tow I'm sure it went well over 8gs. I am still looking just sad I lost on this one cuz it was close to home but I felt like that was just too much moolah. what do you guys think? I do a lot of body shop estimating imo this car was totaled.
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Old 12-03-2016, 03:51 AM   #5
SlammedSix
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Just buy a brand new 2.5 STi block from subaru, they run about 2,000 bucks and then bolt all the 2.0 parts back on that motor and get it tuned. Keep it simple.
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Old 01-12-2017, 09:42 PM   #6
smileywagonride
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I have been keeping an eye out for a late model parts car and purchased a 14 wrx with 2.5l. it is wrecked and odometer reads 23k. i should have kept it simple i know but i really cant help myself. this maybe a little over kill but the ship has sailed and i should have the car in a week or two.
so with that being said does anybody have any personal experience with this swap? any unforeseen issues you ran into? am i a complete idiot for trying this? hah idk i will keep you guys posted
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Old 01-13-2017, 09:14 AM   #7
hondaeater69
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if you want the whole engine and not just the short block, yo'ull need to do an ecu swap, total wiring harness, swap pedal assembles (dbw), and i'm not sure what else. make sure to get the keys, that car has immobilizers...you'll have all the parts to work with, just a lot of stuff to swap over and wire in. (obviously yo'ull have to switch ignition, door locks... might as well do the whole dash...
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Old 01-13-2017, 06:40 PM   #8
GK1707
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Quote:
Originally Posted by SlammedSix View Post
Just buy a brand new 2.5 STi block from subaru, they run about 2,000 bucks and then bolt all the 2.0 parts back on that motor and get it tuned. Keep it simple.

^This would prob be your best bet aside from a EJ207 swap. If you're looking for relative quick and simple. You can machine the 2.0 heads, use a thicker head gasket, or use JE hybrid pistons. Your WRX ECU can run this setup with a opensource or Cobb protune.
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Old 01-23-2017, 09:27 PM   #9
smileywagonride
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gambling with these copart cars is always exciting. unfortunately the car does not run. hit in front and timing covers broken so I took my trusty saws all out and cut the mangle core support off, radiator, condensor and front section of rails. removed timing covers to inspect RH exhaust cam gear was damaged (minor) and timing jumped. belt was not broke so I retimed cams and checked - now have compression! turned key and she starts! however I am still worried since the engine jumped timing so I plan on performing a cylinder leak down test. but it was nice to hear the car run

gambling with copart cars does have its perks - tial external waste gate / up pipe / catless down pipe / grimmspeed bcs / AEM fuel pressure regulator / grimmspeed turbo heat shield all mine for the taking

with the good comes the bad someone yoink my shifter knob. plus I'm gunna need to replace the RH exhaust cam gear, timing belt (kit), and timing covers to start. very curious to check valves for leakage and wonder what will happen later down the road when I put some miles on
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Old 01-27-2017, 08:40 PM   #10
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it turns out the secondary air pump is also broken and I'm trying to deicide if I should replace it or buy the block off kit and worry about tuning for cel. from what I understand it lowers cold start up emissions by inducing air into cylinders which helps the cat warm up faster until the car enters closed loop.

well it turns out I'm probably going to run a catless down pipe so blocking it off seems like the thing to do while the engine is out. I could understand not wanting to trash your cat but if you don't have one then who cares? unless I am missing something that the pump will benefit by keeping it on the car. maybe somebody could fill me in on this. thanks for your input
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Old 01-27-2017, 08:48 PM   #11
SlammedSix
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Quote:
Originally Posted by smileywagonride View Post
it turns out the secondary air pump is also broken and I'm trying to deicide if I should replace it or buy the block off kit and worry about tuning for cel. from what I understand it lowers cold start up emissions by inducing air into cylinders which helps the cat warm up faster until the car enters closed loop.

well it turns out I'm probably going to run a catless down pipe so blocking it off seems like the thing to do while the engine is out. I could understand not wanting to trash your cat but if you don't have one then who cares? unless I am missing something that the pump will benefit by keeping it on the car. maybe somebody could fill me in on this. thanks for your input
The main (6wire?) 2nd air injection solenoid needs to stay on the car, it has internally a barometric pressure sensor which the car uses for adjusting it's tune based off atmospheric pressure.
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Old 01-27-2017, 10:48 PM   #12
BMXspears
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I swapped my bugeye over to STI harness, ECU, DBW, longblock 257 etc years ago.

You will definitely need to swap over entire harness, ecu, HVAC, Fuel pick/pump, fuel pump control module at a minimum!

The HVAC I'm sure won't fit your 02 dash. You better hope the dash will bolt in or you may no longer have climate control!

Now that I think about it, I don't even want to type out all of the things that are probably incompatible! Sell that car and find an older STI for your donor car.
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Old 01-27-2017, 11:05 PM   #13
bdubblu
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Dude. Don't do that swap. Unless you've got a year or more, and gobs of extra cash, and another car you'd be happy driving in the meantime and a lot of spare time, you're going to regret it. Hybrid is the way to go. Or another motor much closer to a direct swap.
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Old 01-28-2017, 09:29 AM   #14
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Quote:
Originally Posted by smileywagonride View Post
the car sold at auction today... $7500 and after auction fees and tow I'm sure it went well over 8gs. I am still looking just sad I lost on this one cuz it was close to home but I felt like that was just too much moolah. what do you guys think? I do a lot of body shop estimating imo this car was totaled.
That's actually cheap, seriously. I parted out an 04 STi with 05 hubs upgrade for well over $7k and that included me keeping the driveline for my bugeye.

Quote:
Originally Posted by bdubblu View Post
Dude. Don't do that swap. Unless you've got a year or more, and gobs of extra cash, and another car you'd be happy driving in the meantime and a lot of spare time, you're going to regret it. Hybrid is the way to go. Or another motor much closer to a direct swap.
^^^true story. Have another DD while you're doing the swap.

With the complexity with the two, I'd start by doing a full wiring merge into the 02 chassis and then adapter what needed adapting...so plugs for lights, blower motor, etc...it would be a lot of work. One swap that I've been thinking about for a couple years now.
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Old 01-28-2017, 02:12 PM   #15
bdubblu
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Quote:
Originally Posted by Homemade WRX View Post
That's actually cheap, seriously. I parted out an 04 STi with 05 hubs upgrade for well over $7k and that included me keeping the driveline for my bugeye.





^^^true story. Have another DD while you're doing the swap.



With the complexity with the two, I'd start by doing a full wiring merge into the 02 chassis and then adapter what needed adapting...so plugs for lights, blower motor, etc...it would be a lot of work. One swap that I've been thinking about for a couple years now.


I'd probably do a semi merge vs pulling the whole harness and creating a new one. Build an auxiliary harness for all of the extra sensors/ wires and then pin them in where necessary to connectors. Existing wiring would get re-pinned as needed. Of course you have to have the new harness for needed connectors and such anyway. So I don't know. It's a lot. That we can be certain of.
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Old 01-28-2017, 02:51 PM   #16
Homemade WRX
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Quote:
Originally Posted by bdubblu View Post
I'd probably do a semi merge vs pulling the whole harness and creating a new one. Build an auxiliary harness for all of the extra sensors/ wires and then pin them in where necessary to connectors. Existing wiring would get re-pinned as needed. Of course you have to have the new harness for needed connectors and such anyway. So I don't know. It's a lot. That we can be certain of.
I'm just speaking from experience of both methods. Adapting the whole harness to the host car is easier. Then you strip out what you don't need.

Last edited by Homemade WRX; 01-28-2017 at 02:58 PM.
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Old 01-28-2017, 08:44 PM   #17
smileywagonride
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thanks for the input guys especially slammed6 and homemade wrx. I am certain this will not be an easy task but figure in the long run I will be better off in terms of performance upgrades to the car. i ended up paying 6k for totaled 14 sti and $750 in auction fees and tow minus what i can get for parting out the rest of whatever i don't need. i have an old rusty but trusty pick up truck to drive in the mean time while car is down for the swap.

so far i have new rh ex avcs cam gear, cam gear bolts, all 5 timing covers and gaskets, gates timing belt kit, cam seals and am now waiting for special tool to remove cam gears. once i r&r these and run engine one more time i will begin swap.

when i ordered parts from dealer parts guy warned me that cam gear retaining bolts like to snap off. anyone experience this problem and do you know any tricks like maybe using some heat to insure bolts do not snap off?

having complete parts car is what gave me the confidence to attempt this swap. the plan is to merge 14 wiring harness into my 02 and adapt from there. it will be time consuming but i think it can be done. i would like to keep 02 dash as air bags have deployed in donor car
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Old 01-29-2017, 01:32 AM   #18
BMXspears
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Default 2014 ej257 swap into 02 wrx

I had the cam bolt problem. Look up a video of our front motorsports removing them. You weld an axle nut into the bolts then take them off with an impact. Works like a charm.
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Old 01-29-2017, 01:33 AM   #19
BMXspears
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2002 EJ257 6spd WRX
Midnight Black

Default 2014 ej257 swap into 02 wrx

Something else I recommend is strip your airbag harness from the old car and retain it. Airbag system is pretty much autonomous from rest of harness. Wrapped in yellow tape.
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Old 01-29-2017, 09:31 PM   #20
Homemade WRX
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SRS system...that's a true story and good note.
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