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Old 05-24-2010, 01:48 PM   #1
1hotsubaru
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Default jdm ej20 sti v4 engine into a 03 wrx???

Has anyone done this swap or does anyone know what i would need other than a jdm ecu???
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Old 05-24-2010, 07:44 PM   #2
Jaxx
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bad idea

many many many things are different
cam/crank pickups
ignition
injector size/type/mounting
IAC

the block could be used but you will need to swap the cam pickup and your 03 heads
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Old 05-24-2010, 08:21 PM   #3
RealDealTarheel
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Things that won't work/shouldn't be done.....
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Old 05-25-2010, 09:51 AM   #4
1hotsubaru
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alright thxs guys! but an ej207 fits right?
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Old 05-25-2010, 10:17 AM   #5
kheff46
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/\/\
they both "fit". but the 207 "works".
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Old 05-25-2010, 10:29 AM   #6
Jaxx
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/thread
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Old 05-25-2010, 12:41 PM   #7
1hotsubaru
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yeah thats what i meant lol, if it works... i heard its all just plug and play other than needing to splice avcs into the harness... is this correct??
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Old 05-25-2010, 03:28 PM   #8
Jaxx
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not "splice" ,should be "add"
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Old 05-26-2010, 01:02 PM   #9
1hotsubaru
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ok but will the ej207 plug into 02-03 wrx wiring harness???
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Old 05-26-2010, 02:07 PM   #10
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Quote:
Originally Posted by 1hotsubaru View Post
ok but will the ej207 plug into 02-03 wrx wiring harness???
EJ207 GC8 Ver5/6 LONGBLOCK (minus intake manifold) will run like a USDM WRX. You would have to use the USDM WRX crank sprocket and camshaft sprocket.

EJ207 GDB Ver7-9 will work but you have no control over your AVCS from your factory USDM WRX ECU. You need the other wires or whatever is out there to make use of the AVCS.
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Old 05-26-2010, 03:42 PM   #11
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also remember see what sight you buy it from and see how well they are known. alot of these japanese chop shops are just that and they cut wires and alot of times they cut stuff in the wrong places which makes the job alot longer. i personally like to stay domestic
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Old 05-28-2010, 02:16 PM   #12
1hotsubaru
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yeah i want to run a ej207, and i found kits that help u wire up avcs, so thats not a problem... and does anyone know where i could get a ej207? i cant seem to find any at all....
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Old 12-15-2012, 11:57 AM   #13
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Default EJ20K Impreza WRX STI Version 3 Fit a 03 Wrx?? HELP!

hey i have a 03 wrx that my short block is gone and i am looking for a engine and i came across jdm engine depot here in NJ and saw that they had a EJ20K Impreza WRX STI Version 3 and i wanted to know if it would fit my 03 wrx.. now im not very good with motor i only know a bit .. need major help! thank you

- Luis
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Old 12-15-2012, 12:41 PM   #14
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If you are only swapping the sb itself, it can be done although you might want to have your heads looked at. If you want to do the whole long block, look at the advice above. What are your plans for the car and other mods i.e. tuning methods?
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Old 12-15-2012, 05:51 PM   #15
Wrx03Dreaming
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Default EJ20K Impreza WRX STI Version 3 Fit a 03 Wrx?? HELP!

Yeah i read but didnt understand much about the part where the AVCS and stuff ... would i be able to use my 03 AVCS ? or i would have to get another AVCS for it?... Also is my 03 Engine parts compatible with EJ20K Impreza WRX STI Version 3 ? .. My plan for the car is just replace the motor. Sti or relagular wrx. im really just trying to get it running. its been a while. she has been collecting dust.
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Old 12-15-2012, 05:54 PM   #16
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any help is appreciated
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Old 12-15-2012, 06:31 PM   #17
69subaru360
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Quote:
Originally Posted by Wrx03Dreaming View Post
hey i have a 03 wrx that my short block is gone and i am looking for a engine and i came across jdm engine depot here in NJ and saw that they had a EJ20K Impreza WRX STI Version 3 and i wanted to know if it would fit my 03 wrx.. now im not very good with motor i only know a bit .. need major help! thank you

- Luis
No, the engine will not work. You could use the shortblock if you really wanted to but the EJ20K shortblock is not reliable.
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Old 12-15-2012, 07:04 PM   #18
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^This.

If you are going to use the short block alone, you would probably want to rebuild it while it is out.
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Old 12-15-2012, 07:30 PM   #19
Wrx03Dreaming
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Quote:
Originally Posted by SpamMansXe View Post
If you are only swapping the sb itself, it can be done although you might want to have your heads looked at. If you want to do the whole long block, look at the advice above. What are your plans for the car and other mods i.e. tuning methods?
Quote:
Originally Posted by 69subaru360 View Post
No, the engine will not work. You could use the shortblock if you really wanted to but the EJ20K shortblock is not reliable.
ahh okay thanks
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