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Old 10-23-2012, 08:44 PM   #1
Aces
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Smile 08 WRX 6-speed swap [COMPLETE!!]



Alright so I thought I would put together this thread to shed some light on the 2008 WRX 6-speed swap. From what I had read prior to doing this there was only a handful of cases where this had been done and the parts lists were not that complete (but extremely helpful). I would like to thank Dur4ce and monkiboy for pioneering this swap and I will put down what my parts list looks like.

To preface, I blew the weak 5-speed tranny on rally practice for my team (www.facebook.com/pickitupracing) and it was great! haha. Needless to say I didn't want to spend $6500 at the local Subaru Dealership to have the same 5-speed put back in. After a little research I concluded that a JDM Version 8 (that's the 2004-2005) STi 6-speed would be a direct fitment and the most cost-effective route. So, here's a comprehensive list of parts that I used:


JDM Version 8 STi transmission Final Drive 3.9
ACT liteweight flywheel
Exedy Stage 1 Clutch
08+ STi Shift Linkage
New Transmission Mounts (04/05 STi)
Steel Braided Clutch Hose (04/05 STi)
04/05 STi Clutch Slave Cylinder
08 Impreza (non-turbo) Driveshaft

*Note You can keep the rear diffs (r180) and not worry about anything the diff will just be ran "open" until you can get a DCCD Controller

DCCD Controller (Optional, not required)
COBB Shift Knob
Plenty of DOT3 fluid
Transmission Fluid



So, after about a weeks worth of work (pulled the team together to get this done) we finished. Needless to say there was a bunch of swears, cuts, bruises, breaks (as in 10-minute sanity breaks) and Red Bull. For more technical info on how I got what where please feel free to leave comments or PM me. I will add photos soon. However, I can say, beyond a shadow of a doubt, that this transmission is BULLETPROOF. Days after installing I took it on a Rally-X at Glen Helen, CA. Power transfer is amazing and it did take a while to get used to reverse but otherwise no noticeable problems. Many thanks to the drivers, navigators and financers of Pick It Up Racing and keeping us rolling!

Total Estimated cost by Subaru: $6,500
Actual Cost: $4,100

Thanks for reading


****UPDATE****

Thanks to Vaughn Performance for putting me on the right track about the DCCD issue. Tired of running an "Open" diff and looking at DCCD PRO and just trying to get the one that has the best application for the JDM transmission. (Thankfully there's only 2 options so it makes it easy). Thinking the one with the pitch and yaw sensor, G sensor and on-the-fly mapping will be the best one. Anyone have any solid intel on how these work by the way, because apparently I have to purchase a thumbwheel with it and there's a dial looking one and an auto/manu one. I'm guessing the more expensive of the 2 is the way to go (though that may not always be the case). Any help is appreciated, thanks!

-Adam
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Old 10-23-2012, 08:59 PM   #2
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This thread needs more pics and more info!
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Old 10-23-2012, 09:04 PM   #3
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Sure what info can I include for you?
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Old 10-23-2012, 09:15 PM   #4
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More pics

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Old 10-23-2012, 09:25 PM   #5
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Tranny crack
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Old 10-23-2012, 09:28 PM   #6
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More pics

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Old 10-24-2012, 07:02 AM   #7
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Awesome. I remember you guys out there racing and wondering why you were in Mod4. I have an 08 too and so far my tranny has held up, but when it goes, this may be the route that I take.

How many miles before your transmission gave out?
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Old 10-24-2012, 08:11 AM   #8
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Quote:
Originally Posted by Pretendingtowork View Post
Awesome. I remember you guys out there racing and wondering why you were in Mod4. I have an 08 too and so far my tranny has held up, but when it goes, this may be the route that I take.

How many miles before your transmission gave out?

Unfortunately with all the Auto X and Rally X's the tranny didn't make it to 60k, it made it to 55k and went out like a champ.

Knock on wood, if you do blow yours I recommend the 6 speed!
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Old 10-24-2012, 08:53 AM   #9
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Wow, right now I am only at 30k, but they are pretty hard driven miles. At least I have options now for if/when the inevitable happens.
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Old 10-24-2012, 11:02 AM   #10
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Well you can hit me up if it does happen. I can pretty much drop my tranny in 45mins cuz I've done it more than enough times when we did the swap lol
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