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Old 12-30-2003, 02:41 PM   #1
LIQUIDSK8S
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Default V.8 Jdm Sti?

I keep running into problems with this swap. Im swapping a V.8 motor into my USDM WRX and its a pain.

The STI engine harness was butchered by the guys who pulled the engine in japan, they cut the stupid wire half an inch before the plugs .

So i need to find out what my options are. Can i use both the WRX engine and wiring harness on my STI motor? I know i can use the wiring harness and that i need to run a few extra wires for the AVCS to work but what about the engine harness?

What needs to be converted omitted etc? Is there anyone i can call that knows how to do this or that has done this swap before?

Ive called Teague auto, who i was referred to by gruppe-s. They said that using the wrx wiring harness would be hard etc, but ive also heard from many others that its simple .

Any help on this would be greatly appreciated, id love to get this car back on the road before 2005, thats what keeps going through my mind with all these problems.

-John
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Old 12-30-2003, 02:57 PM   #2
Jaxx
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i beleive that there is only 4 wires difference between the two harenesses..the avcs
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Old 12-31-2003, 02:14 AM   #3
neednewengine
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Default Sorry to hear that.

I spoke to Ron @ axis power racing.

The Most JDM V7 is the 4 wire Job but the V8 doesn't work that way.

I am not sure how true it is but Ron @ Axis is knows his **** when it comes to his motor swap.

He helped me out quiet a bit on my S202 motor.

Good luck...
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Old 12-31-2003, 03:28 AM   #4
Ver.III
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Ver 8 is pretty much the same as a V7 . Its more than 4 wires that you have to add for the AVCS. Plus switching around a few. Do a search, someone did post the ecu pin outs and procedures.


Edit : its posted in the 2.0L turbo forum.

Last edited by Ver.III; 01-01-2004 at 06:51 PM.
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Old 12-31-2003, 11:11 AM   #5
neednewengine
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Version 8 motor it self might be pretty similiar as V7 but ECU is quiet different.

But of course I can be wrong.

Call Ron @ Axis power racing.

He can help.
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Old 12-31-2003, 02:11 PM   #6
cronic
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Quote:
Originally posted by neednewengine
Version 8 motor it self might be pretty similiar as V7 but ECU is quiet different.

But of course I can be wrong.

Call Ron @ Axis power racing.

He can help.
I have also heard there is a difference in wiring and that it isnt as straight foward as the standard V7..
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Old 01-04-2004, 02:15 PM   #7
LIQUIDSK8S
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I talked to lachute and they said they never use the JDM harnesses, they always use the wrx engine and wiring harnesses. The wires just need to be rewired slightly, and then have the 6 extra wires run for the AVCS to work rather then the 4 wires required for the v.7 engine. There are also a few pin outs that are diff between the v.7 and v.8, the EGT is also done away with when using the wrx harness.

-John
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