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Old 09-20-2015, 12:09 PM   #1
fl1p
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2015 ISM WRX
"Rolla'rex"

Default 2015 WRX v7 JDM 6spd Swap

After a long wait period, I finally pulled the trigger and swapped the stock '15 WRX trans for a v7 JDM STi trans (code TY856WB1CA). Shoutout to Wais over at Japan Domestic Imports for hooking me up with the trans and rear diff.

A massive thank you to @carnz-pj-410 for turning wrenches (see: actually doing the swap), putting up with me, and being an awesome friend.

Status: Completed
Diffculty: Medium.
Technical Knowledge Required: A lot
Notes: Time consuming, but it all fits like a glove. Lots of special tools required (esp. if you rebuild the trans)

Parts list (incl. part numbers and rough MSRPs)
  • Trans* (r180, trans, driveshaft) TY856WB1CA $2,900.00
  • Group N Shift Assy C1010FG600 $296.00
  • Shift Plate Boot 35038AG081 $23.00
  • Boot and Insulator 35016AG030 $45.00
  • 2x Clamps 35057AE000 $2.00
  • 4x Flange Pilot Bolts 010008200 $3.32
  • Cover Assy F STI** 92121VA090 $268.00
  • TiC Holy Shift Bushings $100.00
  • Beatrush Trans Mount $168.00
  • Perrin Motor Mounts (set) $369.00
  • 2x 08-14 STI Rear Axles 28421FG022 $598.00
  • Clutch Disk 30100AA920 $127.46
  • Pressure Plate 30210AA670 $131.21
  • Release Bearing 30502AA130 $109.27
  • 6MT Gasket Set 32001AA210 $85.65
  • Synchro Set 32650AA081 $86.80
  • Baulk Ring (x3) 32614AA111 $34.20
  • Synchro Set 32650AA110 $86.36
  • Synchro Set 32650AA120 $86.80
  • Lock Nut 802645010 $22.35
  • Lock Nut 802628030 $14.91
  • USDM STi Flange for r180 38358AA040 $105.42
  • '15 STi Drive Shaft 27111VA010 $592.83
  • STi Starter Motor
* You don't need the driveshaft that comes with the trans. See the last two items on the parts list.
** Optional. The stock WRX trim piece works just fine.

The following parts are optional, but are included in the above parts list. We pulled the trans apart to inspect it and replace synchros. Upgraded shift bushings etc aren't required, but it made sense to do it all at once.
  • TiC Holy Shift Bushings
  • Trans mount
  • Engine Mounts
  • All Synchro sets

Parts cost: Roughly $5,500

Photos
http://imgur.com/a/9025L

Videos
Coming Soon (tm)
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Last edited by fl1p; 04-11-2016 at 09:51 AM. Reason: Parts clarification
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Old 09-20-2015, 12:09 PM   #2
fl1p
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Default

Notable Tid-Bits (questions that got direct answers in the thread)

Quote:
Originally Posted by Wannabe WRX View Post
The 2015 hub units will not bolt onto earlier Imprezas. The rear suspension bolts on the hubs differently than they do for the GD units.
Quote:
Originally Posted by carnz-pj-410 View Post
this is a non-dccd trans, there are V7 DCCD transmissions and DCCDpro would work, but we chose to not use one
Quote:
Originally Posted by psyclobe View Post
Yeah you need STI rear axels, front axels don't need replacing

Last edited by fl1p; 03-31-2016 at 02:13 PM.
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Old 09-20-2015, 10:32 PM   #3
chrislisss
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Looks clean
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Old 09-23-2015, 01:22 PM   #4
paprocjo
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Can you run the dccd with this?
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Old 09-23-2015, 02:43 PM   #5
carnz-pj-410
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If you buy a DCCD trans you could set it up to work
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Old 09-23-2015, 06:17 PM   #6
SubieGuy84
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Guess that answers the question's if the EJ and FA transmission are interchangeable. A lot of people were wondering because of the starter. Nice project
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Old 09-23-2015, 10:27 PM   #7
J_mythsuby
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Quote:
Originally Posted by carnz-pj-410 View Post
If you buy a DCCD trans you could set it up to work

Curious, can the DCCD pro not be made to work with the ver 7 transmission or do you need a Ver 8 to be able to utilize the differential controls?
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Old 09-23-2015, 10:30 PM   #8
carnz-pj-410
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this is a non-dccd trans, there are V7 DCCD transmissions and DCCDpro would work, but we chose to not use one
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Old 09-24-2015, 08:52 PM   #9
J_mythsuby
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Gotcha! Thanks for clearing that up.
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Old 09-24-2015, 09:04 PM   #10
Fierysun
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Why not just sell the WRX and get an STI? Then you'll get the Brembo's and everything else.
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Old 09-24-2015, 09:39 PM   #11
carnz-pj-410
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because this is what he wanted to do. also this way he has the FA20
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Old 09-29-2015, 11:25 AM   #12
fl1p
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Quote:
Originally Posted by Fierysun View Post
Why not just sell the WRX and get an STI? Then you'll get the Brembo's and everything else.
I wanted the FA platform, not an EJ (hate me all you want). Also, getting an STi still wouldn't have gotten me the trans that I wanted. This way, even if I get a big brake kit, I still come in under the cost difference of the STi and have all the benefits without the cons.

Regarding DCCD, yes you can hook up a DCCD trans. This particular trans is non-DCCD - I didn't care about it/not worth the headache of hooking it up.
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Old 09-29-2015, 11:27 AM   #13
fl1p
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Quote:
Originally Posted by SubieGuy84 View Post
Guess that answers the question's if the EJ and FA transmission are interchangeable. A lot of people were wondering because of the starter. Nice project
As noted in the OP, the starter has to be changed out for an STi starter (rather, a starter that matches the trans). The stock starter on the '15 wrx is the same one as is on the FA Impreza (it doesn't work with this trans).
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Old 09-29-2015, 02:49 PM   #14
SubieGuy84
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Quote:
Originally Posted by fl1p View Post
As noted in the OP, the starter has to be changed out for an STi starter (rather, a starter that matches the trans). The stock starter on the '15 wrx is the same one as is on the FA Impreza (it doesn't work with this trans).
Yeah I noticed that. Is the that the starter does not extend out far enough or the teeth are of a different size?
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Old 09-30-2015, 07:59 AM   #15
fl1p
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Quote:
Originally Posted by SubieGuy84 View Post
Yeah I noticed that. Is the that the starter does not extend out far enough or the teeth are of a different size?
I've just realized that my second post with more details never got posted.. I just moved to the NOVA region. Sorry for the confusion.

To answer your question, the stock starter has a differently designed shroud around the gear. This shroud was catching on the fly wheel. I have a photo that shows the difference.

Once I get Internet sorted out here, I'll upload the second and third batch of photos and get my formal writeup posted
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Old 09-30-2015, 10:35 AM   #16
SubieGuy84
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Quote:
Originally Posted by fl1p View Post
I've just realized that my second post with more details never got posted.. I just moved to the NOVA region. Sorry for the confusion.

To answer your question, the stock starter has a differently designed shroud around the gear. This shroud was catching on the fly wheel. I have a photo that shows the difference.

Once I get Internet sorted out here, I'll upload the second and third batch of photos and get my formal writeup posted
Gotcha, I can't wait to see all the info. I'm thinking of dropping the 15 WRX trans in an older chassis, so this is very helpful
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Old 10-14-2015, 11:12 AM   #17
08subi2.5
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Nice work looks awesome!
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Old 10-14-2015, 11:46 AM   #18
ride5000
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cool project, nice work
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Old 10-26-2015, 03:53 PM   #19
wicked2002wrx
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very cool! I would love to see this, do you go to any meets?
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Old 11-04-2015, 11:50 AM   #20
anjuna
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i like diz.
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Old 11-13-2015, 09:36 AM   #21
fl1p
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Quote:
Originally Posted by wicked2002wrx View Post
very cool! I would love to see this, do you go to any meets?
From time to time. I've been to the meet in Towsons, but I'm stupid busy so haven't gone lately. That said, I'm always down to get a beer/lunch/what ever and talk cars / make friends!
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Old 11-14-2015, 07:30 PM   #22
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Quote:
Originally Posted by fl1p View Post
From time to time. I've been to the meet in Towsons, but I'm stupid busy so haven't gone lately. That said, I'm always down to get a beer/lunch/what ever and talk cars / make friends!
fl1p is a turd who doesn't even lunch his sex sped
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Old 11-15-2015, 08:14 PM   #23
carnz-pj-410
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fl1p needs to come back home
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Old 11-22-2015, 07:32 PM   #24
Subadrew15
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He mentions you can use a 08-15 drive shaft. I wonder if its a typo. What year drive shaft did you use exactly?
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Old 11-22-2015, 07:48 PM   #25
carnz-pj-410
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We used a 2015 STi driveshaft, I feel like a 8-14 would work as well.
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