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Old 05-04-2014, 05:23 PM   #26
Serkan
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Can someone with a 2015 sti crawl under the car and take some pics of the steering rack for us. So can know if it is even close to make it fit.
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Old 05-07-2014, 06:55 AM   #27
almostJDM
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thie is from the thread over at IWSTI

2013-----------------------------------2015

34430FG040------ PUMP-POWER STEERING ---- 34430FG040 Same
34160XA000------ TIE ROD COMPLETE Outer--- 34160XA000 same
34166AG050------ CLAMP-GEAR BOX PINION---- 34166AG030 not
34161SA001------TIE ROD END ASSEMBLY------34161SA001 same
34115AG010------rack bushing-----------------34115AG010 same means same diameter tube
34166AG030-------CLAMP for rack bushing -----34166AG050 different consistent with different body
34170FG011------UNIVERSAL JOINT ASS--------34170VA030 not but may just be longer shouldn't be required for swap
901000372-------FLANGE BOLT Mounting--------901000372 same mounting bolts

2011 Rack http://subarupartsheadquarters.com/?...tsheadquarters
2015 Rack http://subarupartsheadquarters.com/?...tsheadquarters



http://www.iwsti.com/forums/2015-sti...rack-swap.html
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Old 05-07-2014, 10:46 AM   #28
slide
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What about the steering angle sensor? I'm a complete idiot when it comes to how the steering system and vdc work together. Is the 2015 able to retrofit into a 08+?

If this can work I want one.
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Old 05-07-2014, 11:58 AM   #29
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thankfully i don't have any of that fancy **** on my bugeye.

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Old 05-07-2014, 12:30 PM   #30
T-37
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Based on the above, it sounds like a very doable swap for the GR, the question is who will be the first to try it on the GD?

If it works for the GD, I'll take 2. SRSLY

Last edited by T-37; 05-07-2014 at 01:01 PM.
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Old 05-07-2014, 03:22 PM   #31
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I've been waiting to find a thread on this, thank god this conversation has been started. Does anyone know if the L&E quick gears will cause the issue with the sensors as well? Frankly, I would like to keep my yaw control available for street driving, but also have a shorter ratio....

The L&E option is not an actual rack, it is a set of shorter ratio gears for the rack.

Hi *****, we do not sell a quick steering rack. We modify the steering column with a 1.5 quickener. This provides a 1.5 times faster steering ratio with a slightly heavier steering. My son has this installed on his Impreza for 10 years of street driving. As with any faster steerings you have to be aware of the faster steering so you do not over correct.

Hope this helps.

Best Regards Larry
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Old 05-07-2014, 04:30 PM   #32
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Quote:
Originally Posted by T-37 View Post
Based on the above, it sounds like a very doable swap for the GR, the question is who will be the first to try it on the GD?

If it works for the GD, I'll take 2. SRSLY
based on my prior research, the second gen gd/gg subframe will accept third gen gr/etc racks.

the 2nd gen steering column side U strap has been replaced by flanges cast into the 3rd gen rack housing. fitting the new rack housing requires longer bolts to reach the captive nuts on that side as a result, but no other modification is necessary.

there is also an additional mounting bracket which is used on the 3rd gen that utilizes two extra bolt holes, but the bracket and the two bolts can be left off.

that's my understanding at least. it's pretty recent as i have a failing rack on my bugeye...
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Old 05-07-2014, 06:24 PM   #33
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Quote:
Originally Posted by ride5000 View Post

based on my prior research, the second gen gd/gg subframe will accept third gen gr/etc racks.

the 2nd gen steering column side U strap has been replaced by flanges cast into the 3rd gen rack housing. fitting the new rack housing requires longer bolts to reach the captive nuts on that side as a result, but no other modification is necessary.

there is also an additional mounting bracket which is used on the 3rd gen that utilizes two extra bolt holes, but the bracket and the two bolts can be left off.

that's my understanding at least. it's pretty recent as i have a failing rack on my bugeye...
Thanks for the info.

So if my car uses the "square" bushings it is a gen 1 GD, Meaning I'd need a gen 2 GD subframe from an 05+? Am I interpreting correctly?
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Old 05-07-2014, 06:31 PM   #34
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So I guess we wait till someone wrecks their 2015 sti (without dying) and someone buys the steering rack to fit on their GD or GR.
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Old 05-07-2014, 07:54 PM   #35
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What is this steering angle sensor and is it needed if going onto a GD subframe? I have my RS swapped, so if it fits the GD, it fits my RS
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Old 05-08-2014, 06:52 AM   #36
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Quote:
Originally Posted by T-37 View Post
Thanks for the info.

So if my car uses the "square" bushings it is a gen 1 GD, Meaning I'd need a gen 2 GD subframe from an 05+? Am I interpreting correctly?
i do not believe you need to swap the subframe, as the "strap" holes are in the same spot as the "tab" holes.

see http://forums.nasioc.com/forums/show...9#post29914989
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Old 05-08-2014, 06:54 AM   #37
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i don't know/remember where i scraped the following quote, as it's just in my evernote folder, but it may be of assistance.

apologies that it is not properly cited:

Quote:
The 05+ wrx and sti steering rack can be mounted without the newer crossmember. I know that they can be mounted to the pre 05 wrxcrossmembers. They will bolt "incomplete" using 4 bolts instead of 6, but that is sufficient because it is the same positioning and design of how our steering racks mount right now. Two bolts will need to be replaced with longer bolts however. The bolts will be M10x1.25x50mm

So recap and extra clarification:
- 05+ WRX and STi come with 15:1 ratio steering racks and newer cross members
- Newer racks can fit with older Impreza cross members with 4 bolts (replace 2 with longer ones)
- The newer cross members are nicer because of less lateral movement from the two extra bolts, but they are not needed.
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Old 05-08-2014, 01:02 PM   #38
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Awesome info. The shop a buddy of mine is working at is prepping a Pikes Peak car for this year. They've got a '15 STi rack on the way, and should be able to confirm fitment on their GR. Hopefully he, or someone else from that fairly popular shop, will chime in.
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Old 05-08-2014, 01:04 PM   #39
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Looks like someone called Subaru directly and they confirmed it would be a direct swap with minimal modifications, which I'm hoping just means that clamp and they said the VDC would continue to work with the angle sensor, if it turns out to be true looks like I'll be ordering a new rack in 2 weeks haha
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Old 05-08-2014, 01:08 PM   #40
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I so hope this is true!
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Old 05-08-2014, 04:53 PM   #41
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good info almostjdm!

thank god i never went for those overpriced quickracks.
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Old 05-08-2014, 08:57 PM   #42
Serkan
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If it fits GR, it will fit 05-07 sti as well.

Only difference between the GR and 05-07 sti is the passenger side bushing.

OD of the passenger-side bushing is same for both, so I am assuming if you use KSR207 bushings with GR bracket (or modify 05-07), all should work fine for 05-07 crossmember

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Old 05-08-2014, 10:07 PM   #43
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Quote:
Originally Posted by Serkan View Post
If it fits GR, it will fit 05-07 sti as well.

Only difference between the GR and 05-07 sti is the passenger side bushing.

OD of the passenger-side bushing is same for both, so I am assuming if you use KSR207 bushings with GR bracket (or modify 05-07), all should work fine for 05-07 crossmember
I have read the coupler spline count is different on the GR vs GD. Not sure if this in on both ends? Could be a minor issue though.
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Old 05-08-2014, 11:08 PM   #44
Serkan
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Hmm I thought Subaru would have kept that part same. That might be a problem if steering column splines don't match the U joint.
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Old 05-08-2014, 11:11 PM   #45
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swap steering column..
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Old 05-10-2014, 08:44 AM   #46
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Quote:
Originally Posted by almostJDM View Post
Looks like someone called Subaru directly and they confirmed it would be a direct swap with minimal modifications, which I'm hoping just means that clamp and they said the VDC would continue to work with the angle sensor, if it turns out to be true looks like I'll be ordering a new rack in 2 weeks haha
Do you have a link to this?

Just to confirm, are you saying that if I buy a 15+ rack and a 15+ steering angle sensor then the stability control, DCCD, ABS, etc will function properly with the new rack ratio?
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Old 05-10-2014, 09:06 AM   #47
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http://www.iwsti.com/forums/2015-sti...rack-swap.html DCCD and ABS will work without any issues, it's the VCD that's going to go crazy if anything
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Old 05-13-2014, 01:15 PM   #48
t0wardseternity
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34110VA120 is the part number for the 15 sti rack assembly. MSRP is $712.34 and dealer cost is $548.50. Only two available in the country through subarus warehouses right now though...
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Old 05-13-2014, 01:48 PM   #49
slide
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Hopefully some one figures out te steering angle sensor and if it works with the vdc. Then I am in!!!
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Old 05-13-2014, 02:42 PM   #50
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What is this steering sensor you all speak about? Will this matter if going into an older 02-03 WRX?
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