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Old 04-22-2016, 12:22 AM   #1
Sub13wrx
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Default 2013 wrx doing 2008+ sti tranny swap

Anyone here done this for the 2008+ above...I've searched thru the forum and Google see a lot of swaps made to the previous years but not to an 08+ I have a 2013 wrx and wanting to do a tranny swap currently looking into buying a 2011 sti swap without the sti hubs I'm wanting to keep my bolt pattern and already have front and rear brembo upgrade Not interested in upgrading the 5speed with ppg gears already making 650whp on the stock 5speed with Moore blast plates maxed out the fuel pump going to drop in a 2nd pump raise the boost make whole lot more My question is what all would I need and will the 2011 sti axles fit on my 2013 wrx with my 2013 wrx hubs
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Old 04-22-2016, 11:41 AM   #2
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good thing you asked this question since its never been discussed before..
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Old 04-22-2016, 11:43 AM   #3
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6 speed axles will not fit 5 speed hubs, and 5 speed axles will not fit the 6 speed.

custom axles, or the entire hub conversion (which isn't a bad idea).

650hp and asking these questions? talk to the tuner or shop who built the car.
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Old 04-22-2016, 12:16 PM   #4
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Huh? The STI axles will work if you put in the R180 along with the 6mt...
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Old 04-22-2016, 01:51 PM   #5
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Quote:
Originally Posted by point78 View Post
Huh? The STI axles will work if you put in the R180 along with the 6mt...
That's also what I have been told by the people building my car. He mentioned some minor customization of the STI axles to fit, but said all we would truly need is the trans, r180 diff, and the axles. (and my car is being built for 700+hp with the option to go further if desired)
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Old 04-22-2016, 07:25 PM   #6
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Can you run the car without the dccd controller? Pros and cons
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Old 04-22-2016, 08:48 PM   #7
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Quote:
Originally Posted by point78 View Post
Huh? The STI axles will work if you put in the R180 along with the 6mt...
With the wrx 5x100 hubs?

The fronts fit 100%
The rear due to the r180 diff being different size I believe not unless you do like a hybrid sti axle with the inner being sti and swapping the outer with the one off the wrx so it will mate with the 5×100 hubs of the wrx
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Old 04-23-2016, 02:11 PM   #8
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Quote:
Originally Posted by Sub13wrx View Post
With the wrx 5x100 hubs?

The fronts fit 100%
The rear due to the r180 diff being different size I believe not unless you do like a hybrid sti axle with the inner being sti and swapping the outer with the one off the wrx so it will mate with the 5×100 hubs of the wrx
This is true on pre-2011s. 2011+ widebody will accept the sti rears due to wider track.
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Old 04-23-2016, 02:55 PM   #9
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Quote:
Originally Posted by subezero View Post
This is true on pre-2011s. 2011+ widebody will accept the sti rears due to wider track.
^^^ this ^^^
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Old 04-23-2016, 08:50 PM   #10
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Quote:
Originally Posted by subezero View Post
This is true on pre-2011s. 2011+ widebody will accept the sti rears due to wider track.
Has nothing to do with the width.

Quote:
Originally Posted by point78 View Post
Huh? The STI axles will work if you put in the R180 along with the 6mt...
On the GD's at least, and I was assuming its the same for the GR+ chassis....

The 5x100 and 5x114 hubs have different spline counts.
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Old 04-24-2016, 11:14 AM   #11
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Quote:
Originally Posted by sc00by4life View Post
Has nothing to do with the width.



On the GD's at least, and I was assuming its the same for the GR+ chassis....

The 5x100 and 5x114 hubs have different spline counts.
Yes, length is the issue on narrow bodies, not an issue on widebodys. While spline count may differ, 5x114 axles will mate to a 5x100 hub. Proof:

http://forums.nasioc.com/forums/show...3#post39696583

Last edited by subezero; 04-24-2016 at 11:19 AM.
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Old 04-24-2016, 08:44 PM   #12
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Thanks for the info and link this some good info for everyone!
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Old 04-24-2016, 08:48 PM   #13
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Is there a way to tell if the viscous coupling inside the center diff on a 2013 wrx 5speed is bad other then clunking on sharp turns? I started to experience clunking noise after about 25-30min driving highway basically when fluids get up to temp and warm and during turning doing circles in a parking lot either way. when first started cold doesn't do it?
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Old 04-24-2016, 08:50 PM   #14
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I already drained the transmision fluid dropped the driveshaft and pulled out the viscous coupling inside the center diff
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Old 04-24-2016, 09:19 PM   #15
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You are WAY out of your comfort zone here. You need to read the threads stickied at the top of this forum as if you think you have too much power for PPG then you have too much power for a 6MT too. If you want REAL help and plan on making this much power, you need to talk to REAL professionals like the ones at www.andrewtechautomotive.com and stop grasping at straws.
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Old 04-24-2016, 11:26 PM   #16
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Sorry but no where near "out of my comfort zone" im not your regular bob down the street i worked as a tech for years I do all the work on my cars the only reason I won't put ppg gears in my 5speed is because it's a 5speed personal preference I rather have the 6speed never said I don't plan to put ppg gears into it later on
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Old 04-25-2016, 07:39 AM   #17
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Quote:
Originally Posted by subezero View Post
Yes, length is the issue on narrow bodies, not an issue on widebodys. While spline count may differ, 5x114 axles will mate to a 5x100 hub. Proof:

http://forums.nasioc.com/forums/show...3#post39696583


I have seen ONE post where a guy used the 2008+ sti axles on a narrow body. But just one post, so who knows. 2011 widewbody's are good to go.

2008+ wrx outer(wheel side) are the same as the STI. It's the R160 vs the R180 that's different. The R180 is bigger where the axles plug in. (It also has a different pinion flange, but those can be swapped)

When I put a 6mt in my 2008 WRX, I used the stock R160 & rear axles for a while. I had a R180 sitting in my garage, I just took the pinion flange off & bolted it to the R160. (Using the STI driveshaft)

When I put the R180 in, I had DSS make me axles.

If you have a 2011+ wrx, you can use 2008+ STI rear axles IF you put the R180 in. If you leave the R160 in, you can obviously use the wrx axles, just change to the R180 pinion flange & STI driveshaft...

Last edited by point78; 04-25-2016 at 07:55 AM.
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Old 04-25-2016, 10:36 AM   #18
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Quote:
Originally Posted by sc00by4life View Post
6 speed axles will not fit 5 speed hubs, and 5 speed axles will not fit the 6 speed.

custom axles, or the entire hub conversion (which isn't a bad idea).

650hp and asking these questions? talk to the tuner or shop who built the car.
Quote:
Originally Posted by sc00by4life View Post
Has nothing to do with the width.

On the GD's at least, and I was assuming its the same for the GR+ chassis....

The 5x100 and 5x114 hubs have different spline counts.
WRONG.

Quote:
Originally Posted by Unabomber View Post
You are WAY out of your comfort zone here. You need to read the threads stickied at the top of this forum as if you think you have too much power for PPG then you have too much power for a 6MT too. If you want REAL help and plan on making this much power, you need to talk to REAL professionals like the ones at www.andrewtechautomotive.com and stop grasping at straws.
Disagree with this too.

I have a stock 6 speed in my car and take it to the dragstrip regularly. It is driven hard. 750WHP and still going.

I have also done built 5 speeds and broken them multiple times just driving on the street at 450WHP...

Quote:
Originally Posted by Sub13wrx View Post
Anyone here done this for the 2008+ above...I've searched thru the forum and Google see a lot of swaps made to the previous years but not to an 08+ I have a 2013 wrx and wanting to do a tranny swap currently looking into buying a 2011 sti swap without the sti hubs I'm wanting to keep my bolt pattern and already have front and rear brembo upgrade Not interested in upgrading the 5speed with ppg gears already making 650whp on the stock 5speed with Moore blast plates maxed out the fuel pump going to drop in a 2nd pump raise the boost make whole lot more My question is what all would I need and will the 2011 sti axles fit on my 2013 wrx with my 2013 wrx hubs
Here's my swap thread from several years ago. Should have all the info you need.

http://forums.nasioc.com/forums/show....php?t=2466977

The r180 and STI rear axle info is further into the thread.

http://forums.nasioc.com/forums/show...3#post39696583
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Old 04-25-2016, 02:57 PM   #19
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a lot of people are just saying "axles" without specifying front or rear. it seems most people in here are talking rear, but i wanted to clarify that for people who couldn't deduce it themselves.

08-14 WRX front hubs with 6-speed: use WRX front axles, the stub on the hub end of the Sti axles would be too long as the STi bearing assembly is deeper, WRX axles still fit into the STi trans IIRC.

08-14 WRX rear hubs with R160: use WRX rear axles

08-14 WRX rear hubs with R180: use STi rear axles (on 11-14), or hybrid/custom axles (on 08-10). the GR sti/wrx axles are the same on the HUB-SIDE, but differ on the DIFF-side. there have been reports that the STi rear axle works just fine for the narrow body too, but not many have tried it. I plan to try this out when I swap in my 6sp/R180.

Last edited by gsrcrxsi; 04-27-2016 at 11:16 AM.
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Old 04-25-2016, 10:15 PM   #20
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Can I use my 5speed clutch (aftermarket upgrade few miles) in the 6speed? Instead of spending more money on an upgraded sti one for the time being...
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Old 04-25-2016, 11:12 PM   #21
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Nope. Need STI clutch. Also need STI flywheel.

Conflicting opinions on whether you need an STI starter or not.
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Old 04-26-2016, 07:43 AM   #22
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Quote:
Originally Posted by Sub13wrx View Post
Can I use my 5speed clutch (aftermarket upgrade few miles) in the 6speed? Instead of spending more money on an upgraded sti one for the time being...
5speed clutch/flywheel/slave cylinder will all work together on the 6mt.

But you're putting in a 6mt, do it right, put in the 6mt flywheel/clutch/slave cylinder & be done with it...

You can't mix and match the 5mt & 6mt clutch items though, it's all 5mt stuff, or 6mt stuff.

(And check your neutral switch too. Subaru has 2 different ones. Ones "normally open", the other "normally closed". The 5mt switch will bolt into the 6mt if they are different). I forgot to do this in mine, so it's just unhooked-ecu thinks it's always in gear.

Last edited by point78; 04-26-2016 at 07:48 AM.
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Old 04-26-2016, 05:59 PM   #23
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There's been some bad clutch advice given here which is a shame. My recommendation to OP is to perform a full stop and read each and every sticky thread at the top of this forum. You are overestimating your knowledge base on clutches and transmissions for Subarus and you are receiving some incorrect advice that could have been found by proper research via the sticky threads at the top of this forum. My advice stands that you, you are REALLY interested in find the best solution to your problem to consult with the link I posted as they are the #1 Subaru transmission shop on the planet earth. Talking to them is like calling the Coke headquarters in Atlanta and asking for advice on colas. Serious.
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Old 04-26-2016, 06:04 PM   #24
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From the STI you need:

Transmission
Linkage
Clutch/flywheel
Clutch master/slave
Rear Diff
Driveshaft
Trans mount

You should be able to use your stock WRX axles from what I've researched.
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Old 04-26-2016, 10:41 PM   #25
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I decided to do it right and buy a new clutch for the 6speed
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