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Old 10-11-2011, 09:21 PM   #1
Turbocrazy1
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Member#: 297489
Join Date: Oct 2011
Default ver 3/4 into an 02 wrx

As the title says, anyone try to swap a ver3/4sti drivetrain into a 02 wrx? dose anyone have any info on wrx axles fitting the sti diff and gearbox, an are there any major differences in sensors things i should be aware of? I know a TGV delete will be mandatory with the sti manifold, and the plan would be to use all the wrx ecu bits. in another thread it was mentioned that the crank sensor and wheel would need to be swapped, but as for hard parts is it doable?
Also, before I get flamed outa here, Im fairly seasoned with swaps, but new to Subarus, and the reason for these questions is the fact I can get a 02 wrx cheap with a blown trans. I figure an STI block and gearbox are stout enough to hold up to my abuse and plans which include a goal of 370hp-400hp a 20g turbo and supporting mods...
Also, I feel the motor is going to be complicated with swapping all the sensors over and such, but im more concerned the trans, diff, and axles fitting.
Any imput is appreciated.
Thanks for the time guys
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Old 10-12-2011, 11:45 AM   #2
kheff46
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Join Date: Jul 2004
Chapter/Region: MWSOC
Location: Medina, Ohio
Vehicle:
2002 WRX wagon
silver

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V3-4 are the same as WRX axles(or forester/leggy)and tranny is also. R160=R160. the V3-4 are stronger and shorter FD which is nice for quickness. its a straight bolt on affair. you could also source another WRX tranny(stock or built) and save time swapping the diff, driveshaft, etc.

--keith
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Old 10-12-2011, 12:10 PM   #3
Turbocrazy1
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Default

Hey man, thanks for the replyi appreciate it. I thought that was the case, but didn't wanna blow money on something that won't work. As for rebuilds... they're all expensive, for 2k I can have an sti block, larger turbo, and a gear case that's assembled in a normal fassion as opposed to the wrx's clamshell design.... that was my thinking.... I could be totally wrong but even the m factory gears are almost 3k... and those seem to be the minimum for my needs... againg through the search bar I found that some think the shafts flex appart under load which causes the stripped gears, so I thought the ra sti swap would be my best and cheapest bet.

As for the motor? All the electronics should swap over right? (Asside from the IM)

Thanks Adam
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Old 10-15-2011, 01:00 PM   #4
kheff46
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Join Date: Jul 2004
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Location: Medina, Ohio
Vehicle:
2002 WRX wagon
silver

Default

elec. on the tranny? like switches, etc? iirc everything will swap over

--keith
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