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Old 04-09-2016, 11:40 PM   #1
Impretzle
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Member#: 74900
Join Date: Nov 2004
Location: Oakland, CA
Vehicle:
2008 STI
black

Default 02-03 WRX Transmission into 97 Impreza

Hey all,

I have a 97 Impreza wagon and have the option of getting a bugeye parts car. The 97 needs a tranny and I'm wondering how hard the swap would be?

I've searched and found that the final drive is 3.90 on both but I will need to use the WRX's rear end because of the 1.1:1 transfer ratio. Seems like the rear end will fit but I'm wondering about axles and driveshafts then.

Has anyone done this? Any tips? Anything else I can use from the WRX besides the swaybars?

Thanks
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Old 04-13-2016, 12:52 PM   #2
Impretzle
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Member#: 74900
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Location: Oakland, CA
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Brutal. Well, the front axles fit so I'm just gonna put it in and see what happens. I believe we are going to use the WRX diff, try and convert the clutch to hydraulic and use the WRX flywheel and clutch, hopefully that doesn't explode catastrophically
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Old 04-14-2016, 03:53 AM   #3
Impretzle
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Join Date: Nov 2004
Location: Oakland, CA
Vehicle:
2008 STI
black

Default

We ended up forklifting everything over from the WRX: rear subframe, axles, diff, trailing arms, lateral links, brakes, ebrake cables, transmission crossmember, etc. Everything fit, we're going to modify the pedal box slightly and convert to push clutch as well as WRX pedals because they look cool. I used the original driveshaft because it was in better shape than the one from the WRX. Amazing that everything bolts up. Aside from a slight clearance issue with the gas tank and a lateral link bolt, it is straight forward.
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