|
|
|
|
Thread Tools | Display Modes |
11-25-2014, 10:03 PM | #1 |
Scooby Newbie
Member#: 306454
Join Date: Jan 2012
Chapter/Region:
MWSOC
Location: Indianapolis
Vehicle:2012 Impreza WRX WRB |
2011+ WRX 5x114.3 conversion
DSICLAIMER:
So, to start with; I'm not doing this conversion right now or even necessarily in the future. I'm not saying anyone even should do this really, though many people want to do this conversion for wheel fitment choices. The point of this thread is to prove whether or not it can be done easily and cheaply with OEM parts as I haven't seen the info posted out there anywhere and I think it should be documented. (Also note that you would need to already have Brembo's installed on your WRX as the stock brakes will no longer work having 5x100 rotors; though redrilling the rotors MAY be possible if the inside diameter of the rotor will fit the 5x114.3 hub. 2015+ rotors/brakes may also be an option.) This thread is essentially for part fitment nerds like me who are interested by this sort of thing. FACT: STi R180 diff bolts in with 08+ STi axles into the 2011-2014 widebody WRX's. This tells me that the opposite should be true as well. 2011-2014 axles SHOULD fit 08-14 STi REAR wheel bearings. Both cars use a bolt in wheel bearing and after scrounging pics from the interwebs they look pretty close to identical. Here is a few pics of a 2011 STi rear knuckle: And here are a few of a 2011 WRX rear knuckle: Physically they almost look the same to me. The STi rear knuckle has a little bit more structural ribbing to it I can tell, but otherwise they look the same. Of course in actual practice the bearing may not fit; but it certainly seems like it'd be worth a shot for someone wanting to give this a go. Especially so if you for some reason have to parts laying around to test fit. (Shops, I'm looking at you lol) Another thing that would need to be checked is the ABS ring on the axles, but I believe if the 08+ STi rear axles work with the stock rear bits then changing the wheel bearing shouldn't change anything. As for the front, it's the same story. I need to get an actual spline count from an 08-14 STi owner and compare to my car to see if they're the same count; but again it looks like the bearings will bolt to the knuckles just fine. Here's a pic of a 2013 STi front knuckle: And here's a pic of a 2011 WRX front knuckle: The front knuckles are definitely different part numbers and while they're close in design; they are certainly not the same part. It does look like the same bolt pattern as far as bearings go though. It would be interesting to be able to compare them side by side in person. I'm also highly curious as to whether the STi bearing would fit the WRX knuckle or even if the STi knuckle would fit the WRX bearing and be an easy bolt on upgraded knuckle for WRX guys. Anyway, that's the little bit of research I've done this afternoon lol. Differences between cars like this is always interesting to me; so even if it won't work I don't think the research is useless, and at least then we'll know lol. Let me know what you guys think!
* Registered users of the site do not see these ads.
Last edited by Alchem1st; 11-27-2014 at 12:11 PM. |
11-26-2014, 05:30 PM | #2 |
Scooby Newbie
Member#: 306454
Join Date: Jan 2012
Chapter/Region:
MWSOC
Location: Indianapolis
Vehicle:2012 Impreza WRX WRB |
Just finished doing some research on the front axle spline counts between the 2011-2014 WRX and the 2008-2014 STi and found that they're both 27 spline axles! This means that there is a good chance of this theory being correct! Next step would be to compare bearings side by side for the front and rear and see if they're dimensionally the same. If they are, then all one would have to do to convert to 5x114.3 on a 2011-2014 WRX would be to swap bearings and redrill the stock rotors! (or just run Brembo's)
|
01-31-2015, 11:02 PM | #3 |
Scooby Newbie
Member#: 394522
Join Date: Jun 2014
|
Any update. Found pretty cheap deal on BBS STI 2014
|
01-31-2015, 11:05 PM | #4 |
Scooby Specialist
Member#: 287794
Join Date: Jul 2011
Chapter/Region:
South East
Location: NC
Vehicle:2015 Wrx DGM |
|
01-31-2015, 11:45 PM | #5 |
Scooby Newbie
Member#: 335853
Join Date: Oct 2012
Chapter/Region:
Tri-State
Location: Buffalo
Vehicle:2013 WRX 5 Door CBS |
It's been documented that the 08+ sti axles will bolt into wrx hubs. The front struts mount differently on the STi, that's why they are a different part number for the knuckles. I think what needs to be check is the ABS like you stated, and what brake combinations would work. I'm thinking you're on the right track, and that you'd need re drill your rotors or switch to Brembos.
Last edited by SDoBB; 02-01-2015 at 03:38 PM. |
02-01-2015, 12:59 AM | #6 | |
Scooby Newbie
Member#: 306454
Join Date: Jan 2012
Chapter/Region:
MWSOC
Location: Indianapolis
Vehicle:2012 Impreza WRX WRB |
Quote:
|
|
02-01-2015, 03:39 PM | #7 |
Scooby Newbie
Member#: 335853
Join Date: Oct 2012
Chapter/Region:
Tri-State
Location: Buffalo
Vehicle:2013 WRX 5 Door CBS |
I've thought about doing this swap a lot lately. I also have been gathering information on doing an R180 swap using stock driveshaft and axles, but I believe the STi driveshaft has a different bolt pattern at the diff.
|
02-01-2015, 04:41 PM | #8 |
Scooby Newbie
Member#: 306454
Join Date: Jan 2012
Chapter/Region:
MWSOC
Location: Indianapolis
Vehicle:2012 Impreza WRX WRB |
Yeah, I think you're right. That's probably why xluben used the STi driveshaft when he did his car.
|
02-01-2015, 04:46 PM | #9 |
Scooby Specialist
Member#: 344329
Join Date: Jan 2013
Location: Summit County
Vehicle:2008 Wrx, 6mt |
I don't think it's as easy as swapping out the wheel bearings.
I didn't try it, but I'm pretty sure I read somewhere they won't fit-I would have done that when I swapped my 6mt in. |
02-01-2015, 04:48 PM | #10 |
Scooby Specialist
Member#: 344329
Join Date: Jan 2013
Location: Summit County
Vehicle:2008 Wrx, 6mt |
The pinion flange is different between the r160 & the r180. But you can just unbolt & swap them. I did that before I put my r180 in, while using the sti driveshaft.
|
02-01-2015, 05:28 PM | #11 |
Scooby Newbie
Member#: 306454
Join Date: Jan 2012
Chapter/Region:
MWSOC
Location: Indianapolis
Vehicle:2012 Impreza WRX WRB |
It won't fit on a 2008-2010 WRX because of the difference in body widths. Axles are too long. The 2011-2014 WRX share the wide body of the STi though so it may work in our cars. Good to know about the driveshaft though!
|
02-09-2015, 12:46 AM | #12 |
Scooby Newbie
Member#: 385866
Join Date: Mar 2014
|
Bump... Anyone figure out if the Sri unit bearings will swap in the wrx??
Sent from my iPhone using NASIOC |
08-24-2015, 11:44 AM | #13 |
Scooby Newbie
Member#: 427488
Join Date: Aug 2015
|
bump... I have some really nice wheels from a previous project but they are 5x114.3 and it'd be great if I could fit them on my wrx
|
08-24-2015, 12:44 PM | #14 |
Scooby Specialist
Member#: 236952
Join Date: Jan 2010
Chapter/Region:
MAIC
Location: Baltimore
Vehicle:2010 WRX (SSM) Stg 2+ 310/370, 6sp R180 |
sell the wheels and buy the correct pattern. it'll be cheaper that way.
|
08-24-2015, 02:38 PM | #15 |
Scooby Newbie
Member#: 306454
Join Date: Jan 2012
Chapter/Region:
MWSOC
Location: Indianapolis
Vehicle:2012 Impreza WRX WRB |
I haven't done any more research on the subject as I've been busy working on the Evo. I still want to find out if it'll work though. I'd bet it would. Actually, I think I'll post on my local subie owners page and see if anyone has a bad bearing laying around I could use to test.
|
08-24-2015, 10:25 PM | #16 |
Scooby Specialist
Member#: 236952
Join Date: Jan 2010
Chapter/Region:
MAIC
Location: Baltimore
Vehicle:2010 WRX (SSM) Stg 2+ 310/370, 6sp R180 |
2011+ WRX 5x114.3 conversion
I can give you the answers. This isn't that complicated.
To get 5x114 in the rear, you need to swap in the STi rear knuckle and bearing. That's it. It'll work with the rest of the rear suspension and axles for the 2011-2014 WRX. To get 5x114 in the front. You can do it 2 ways. 1. 08+ STi knuckles+bearing assembly, STi front suspension dampers and springs (the STi knuckle is wider at the shock mount and the holes are a different spacing). You'll also need STi axles since the stub that goes through the hub is longer on the STi. If you try to use WRX axles with the STi hub, you won't be able to get the axle nut on. 2. Use LIC custom front knuckles + STi bearing assembly. It's basically an STi knuckle that they weld, mill and redrill to fit it to stock WRX suspension. You then can bolt the modded STi hubs up to the WRX. You still need the STi axles like above. The bigger prob with this is that the LIC hubs are crazy expensive($1000+). And they don't stock them and won't make more unless you get at least 4+ people willing to pony up for a set. For brake setups in the front, the 5x114 hubs are larger, and the WRX rotors will not fit over them. You can either use the Brembos, and 5x114 STi rotors, or you can switch to FHI 4-pots and use the special DBA "gravel" rotors. These are special rotors with a larger diameter "hat" to fit over the large hub, but made for the smaller WRX size rotor for use with rally 15" wheels. Stock WRX calipers might work with the gravel rotor but I'm not sure. |
08-24-2015, 11:28 PM | #17 |
Scooby Newbie
Member#: 306454
Join Date: Jan 2012
Chapter/Region:
MWSOC
Location: Indianapolis
Vehicle:2012 Impreza WRX WRB |
Um wow. Gsrcrxsi crashing the thread with Rockstar status subie knowledge! Killer info man! You sound like me when it comes to evo 4/5/6 conversions lol. Knew someone out there had to have the answers! That's great that it can be done with all oem parts! Makes it simple and it shouldn't be too terribly costly to do.
|
09-09-2015, 10:02 AM | #18 |
Scooby Newbie
Member#: 352483
Join Date: Apr 2013
Chapter/Region:
MAIC
Location: Fredericksburg, VA
Vehicle:2013 WRX 5Dr DGM |
Dang dude, not only did gsrcrxsi answer the question, but he answered my follow up question as well (fitting 4pots on the 5x114 hubs).
My further question then becomes, is it worth it to switch to 5x114 if you plan to go the 4pot/2pot with gravel wheels setup? Gravel wheels come in both 5x100 and 5x114, and aftermarket gravel struts come in both STI and WRX front knuckle fitment options, so there is no NEED to go 5x114. If the end goal is a built motor + 6MT + gravel suspension for RallyX and fun, is the extra strength of the 5x114 setup worth the extra effort in coordination, extra price, and limit on rotor options? Also, if anyone is interested in buying brand new, Group N hubs are available for $100ea + trans-pacific shipping. Just says better grease, no idea if it's any better. https://www.japanparts.com/parts/detail/24197 https://www.japanparts.com/parts/detail/24210 Last edited by KillerAngel; 09-09-2015 at 10:15 AM. |
12-18-2015, 11:57 AM | #19 |
Scooby Newbie
Member#: 427488
Join Date: Aug 2015
|
Excellent info from gsrcrxsi... I knew it'd be a pain to convert to 114.3, but that writeup was great.
|
01-19-2017, 07:07 AM | #20 |
Scooby Newbie
Member#: 437057
Join Date: Dec 2015
Chapter/Region:
NESIC
Location: Johnston, RI
Vehicle:2013 Impreza Wrx World Rally Blue |
Ok i plan on doing the 5x114 swap next week and i sourced out all the parts i was just wondering will 08+ STI rear axles bolt on to my 2013 wrx rear diff and STI knuckle.
Last edited by John4o1; 01-19-2017 at 07:08 AM. Reason: Correction |
02-20-2017, 09:41 AM | #21 |
Scooby Newbie
Member#: 437057
Join Date: Dec 2015
Chapter/Region:
NESIC
Location: Johnston, RI
Vehicle:2013 Impreza Wrx World Rally Blue |
So i completed the swap last weekend it took me 2 days doing it in my drive way lol. I test drove the car around the block to see if everything was good brakes etc and everything was good accept my steering wheel is out of whack i am probaly going to get an alignment today. The front was easier to do than the rear due to the rear having to connect the ebrake cable to the lever making the job longer. The wrx rear brake line is shaped differently than the sti you still can make it work but you wont be able to screw it into the knuckle. I just zip tied it for now until i order some sti stainless lines. To make the job easier i also put new tie rods in the front because the Oem hair pin is a bitch to get to so i just unscrewed it from the steering rack. If anyone has any questions about the swap just send me a pm
|
06-15-2017, 03:57 PM | #22 | |
Scooby Newbie
Member#: 464986
Join Date: Mar 2017
Chapter/Region:
RMIC
Location: Denver, CO
Vehicle:2013 WRX Satin White Pearl |
Quote:
|
|
06-15-2017, 04:32 PM | #23 |
Scooby Newbie
Member#: 464986
Join Date: Mar 2017
Chapter/Region:
RMIC
Location: Denver, CO
Vehicle:2013 WRX Satin White Pearl |
From what I gathered from gsrcrxsi and John4o1 here are the Subaru Parts and prices (new, quoted from subaruparts.com):
Part Description Subaru Part No. Price Quantity Total FRONT SUSPENSION Hub Assembly 28373VA000 $159.56 2.00 $319.12 Knuckle (left) 28313FG011 $124.39 1.00 $124.39 Knuckle (right) 28313FG001 $121.74 1.00 $121.74 Drive Shaft Assembly 28321FG011 $391.99 2.00 $783.98 REAR SUSPENSION Knuckle, LEFT 28411FG031 $147.15 1.00 $147.15 Knuckle, RIGHT 28411FG031 $147.15 1.00 $147.15 Bearing Hub Unit 28473VA000 $125.96 2.00 $251.92 TOTAL COST: $1,895.45 If I understand correctly, these parts will then allow anyone with a 2011-2014 WRX to fit any and all wheels/stuts/springs/coilovers/brakes that fit the 2011-2014 STI. Feel free to add or correct and deficiencies if you see them. Obviously one could save a lot of money by shopping around for cheaper/used parts. Hope this is helpful. |
09-14-2017, 04:48 AM | #24 | |
Scooby Newbie
Member#: 437057
Join Date: Dec 2015
Chapter/Region:
NESIC
Location: Johnston, RI
Vehicle:2013 Impreza Wrx World Rally Blue |
Quote:
|
|
12-08-2017, 03:12 PM | #25 | |
Scooby Newbie
Member#: 476835
Join Date: Oct 2017
Location: Calaveras county CA
Vehicle:2010 WRX Sedan Grey |
Quote:
Im swapping to 6 speed and want to change to 5x114. Thank you |
|
Thread Tools | |
Display Modes | |
|
|