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Old 07-23-2002, 09:46 PM   #1
christoph1371
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Talking EJ20 swap wiring secrets revealed

This

plus this

and this

combined with this

equals this
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Old 07-23-2002, 09:52 PM   #2
moogooob
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uhhh.... gee thanks for the info Yer pics are red x's. Mybe its me
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Old 07-23-2002, 09:54 PM   #3
akcel
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yeah that was umm definately..'informative'
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Old 07-23-2002, 09:54 PM   #4
christoph1371
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no problem. I just wanna help you all understand what really goes on in a swap.
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Old 07-23-2002, 10:13 PM   #5
DoctorNick
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um, woah. How many days of wiring was it?
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Old 07-23-2002, 10:23 PM   #6
Andrew
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adam's lightsaber is dope. i want to duel him someday.
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Old 07-23-2002, 10:25 PM   #7
akcel
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Quote:
Originally posted by Andrew
adam's lightsaber is dope. i want to duel him someday.
ahhaha
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Old 07-23-2002, 11:08 PM   #8
Skylab
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Thumbs up

That's insane how the entire dash/console has to be removed! Makes me appreciate that it can actually be done!


Good work, Christoph!

Skylab™
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Old 07-24-2002, 01:43 AM   #9
XT6Wagon
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Oooh thats where I am in the swap.

Of course I only need the motor to run since I don't have any sill ABS stuff or A/C stuff.

Mind helping me a bit?

I currently need to know where I need to feed my harness switched power.
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Old 07-24-2002, 12:14 PM   #10
TaiChih
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Without giving up trade secrets, You'll need to take your stock wiring harness out of the car( which means the entire dash, no joke), and have the RHD wiring harness available too. Now, have both ECU pinouts to your old and new motor and splice according. The problem is getting the motor's ECU pinout for the EJ20( if it's STI or Japanese, not WRX). The WRX wiring harness should be easier to obtain. Rallispec can do the wiring harness conversion for $750.
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Old 07-24-2002, 03:01 PM   #11
63Alpine
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And after all that you have less horsepower than you can get with a nice bolt-on turbo kit.
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Old 07-24-2002, 03:53 PM   #12
TaiChih
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reliability my good man.......
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Old 07-24-2002, 05:06 PM   #13
Andrew
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Quote:
Originally posted by TaiChih
reliability my good man.......
and legality if you are in CA.
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Old 07-24-2002, 06:02 PM   #14
christoph1371
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reliability indeed and did I forget to mention that it can pass smog, legally? I know that may not matter to many other states besides us (CA) but it is a rather great selling point here.
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Old 07-25-2002, 02:11 AM   #15
XT6Wagon
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TaiChih, thanks but um my car is NOTHING like the 94 WRX I have a harness from. I don't need much to work, just the engine. The rest of the car uses the small remaining chunks of the body harness. Its an 88 wagon BTW.

Does anyone have the wirign diagram for this era WRX? or be willing to give a little help?
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Old 07-25-2002, 08:42 AM   #16
Shinji N
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oh what the


*points down at crotch*
IT'S RIGHT HERE MAN! IT'S RIGHT HERE!
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Old 07-25-2002, 12:46 PM   #17
TaiChih
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sorry, I was talking about a WRX into RS conversion. I had no idea what kinda conversion you were doing, but good luck with it. I meant for that professional look, you'd have to cut and splice the wires going into the engine bay, the rest inside the car should be the same, unless you are switching the ECU as well.
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Old 07-25-2002, 10:50 PM   #18
Digital_Boy
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Yep, the #1 most tedious, time consuming and expensive (if you're paying to have it done) portion of the WRX-> RS swap is the wiring. The mechanical side, i.e. crossmembers, exhaust piping, etcetera, is the simple part.

We're doing one WRX swap right now @ SXPi, and have another customer scheduled for one very soon, and I may be doing one to my own personal driver (emissions legality is a nice balm to mitigate the loss of some low end torque), or may swap the intake/turbo/control systems onto the built EJ25 block (and screw losing the torque! ) and still get it referee'd as CA legal!

But merging the two wiring harnesses into one to accomodate all the sensors and plugs that exist on the WRX that weren't there on the RS is a big challenge... Unfortunately, I don't have much time to devote to the shop right now, having to work full time, so it's Gen, Moses and Stefano who're doing the swap right now.
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Old 07-25-2002, 11:27 PM   #19
christoph1371
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yeah, I spoke with Stefano the other day. He and Gen were working on it as we spoke. Anyway, how is that project going?
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Old 07-26-2002, 05:29 AM   #20
Digital_Boy
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Dash is completely torn out of the white RS, even the crossbar. I look at it as a blessing in disguise, since now we can also apply some felt or whatever inside the dash to get rid of the RS's signature cabin rattles. The car is also hogging the floor jack since we had to take the A arms off with the 2.5 front crossmember.
I wouldn't even venture a guess as to when it'll be going back together, but not terribly far away.

Pix will follow soon, just so people can truly understand what it takes to do a CA legal engine swap the right (ie as close to factory as possible) way.
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Old 07-26-2002, 07:53 AM   #21
XT6Wagon
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DigitalBoy, would it be possible to get a copy of the WRX wiring diagram that you are using?

Thanks.
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Old 07-26-2002, 10:48 AM   #22
TaiChih
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courtesy of the Capt.

doh, and the link for the pinout diagram.
http://www.northursalia.com/m...ng/wrxpin.html
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