Re: Direct bolt-on calipers
 

Try driving a manual transmission SVX; completely different animal. With the 4EAT engine revs are soaked up by the torque converter first, but with the 6-speed the SVX is more jumpy than my Legacy in Sport Sharp drive mode.

Re: Direct bolt-on calipers
 

Yeah, given a choice in this car, I'd much rather have a manual than the automatic. But since they didn't come with manuals in the States, it is what it is. I'm okay with that, I have the VUE, two Triumph motorcycles, numerous firearms, one daughter doing grad school in Ireland, and another one ready to graduate from the University of Hawaii, so it's not like I don't have other things to spend my limited funds on, lol...

Re: Direct bolt-on calipers
 

I agree 4/2 is good and will do great on the svx, 6 is just for looks/overkill, I would do it if money would let me, but not required.

And ya with a manual, especially 6 speed this svx wakes up you will never look at the car the same. If I can make it to the 25th meet I would let people drive to see for themselves.
I have the engine, I just need to drop it in, I should swap over my waterpump/timing belt as mine are new and I don't know anything about these but water pump gasket isn't in my current budget lmao.

Re: Direct bolt-on calipers
 

Yea, I am here. The caddy brembos require a bracket and a 355mm rotor. Project is on hold while I get my svx ready for car season.

Re: Direct bolt-on calipers
 

Hope you get to trying the Cad calipers soon because I've been thinking of the same project but didn't want to experiment since it's my daily driver and can't be down for too long.

Re: Direct bolt-on calipers
 

I've been doing a lot research and question asking as well. Here is what I've found out so far.

I'll start with REAR brakes because it's the most straightforward.

Parts you need:
2006-2007 WRX STi rear backing plate
2006-2007 WRX Sti rear rotors
2006-2017 WRX STi rear calipers

From my research it seems the calipers are functionally the same, it's the mounting point that was modified in 2008 - it went from a backing plate design to an ear-on-knuckle design. This moved the caliper offset by approximately 4mm which is why you want 2006-2007 rotors. To swap backing plates, you need to remove the rear wheel bearings. This would be a good time to replace wheel bearings. :)

As for the FRONT brakes, it appears that Subaru made a custom knuckle with caliper mounting tabs that are located slightly further away from the hub than any other Subaru ever made. What this means is that any other subaru caliper you want to use will be ever so slightly too far away to fit precisely over the oem size 2006-2017 rotors. I am not sure how much the difference is, but I have read anywhere from 1 cm to 15mm. Not verified by me. What this means is that you could modify the metal tabs on the knuckle to move the bolt holes closer to the hub. I do not know how feasible this would be with clearance of other knuckle components, however, I think this *might* work. Alternatively, you can source a custom made bracket that adapts to the more current "Brembo GT calipers" made in 4 and 6 piston styles. These brackets allow these calipers to work with 355xx x 32mm rotors (Mustang GT500 size). The downside here is that you'll likely pay a bit more money for the Brembo GT style caliper, and you'll need to locate a pair of said brackets. If you're a stickler for looks like I am, you'll also need to custom paint/powdercoat all 4 calipers to match.

Re: Direct bolt-on calipers
 

Pardon my ignorance on the subject.

Could we not just switch hubs with a Tribeca or MY05+ STI so that Brake parts are more universal?

I know that the splines are different on the half shafts(an hub), but wouldn't taking the hub side of the half shaft apart and switch to the half shaft with the appropriate shaft spline for the hub.

Its a little more work at the beginning but may be cheaper and pay off in the end.

Re: Direct bolt-on calipers
 

The following is a cut and paste from the SVX Nation Face Book thread on the upgrade of the front calipers to 4 pot.

"So after seeing a bit of interest in doing the 06/07 wrx and jdm 4/2 pot caliper swaps, we have decided to put a feeler up for anyone interested in our customs cnc'd front caliper spacers. These are designed to widen the front 4 pot calipers to accommodate a Tribeca front rotor on our SVX's. Shout out to Ryan Clark for doing all of the mock up work so we had the measurements correct to make these.
Prices will be as follows, and will be based on the number of people interested.
1-9@$90/set
10-19@$80/set
20+@$70/set
One set includes 4 total spacers for 2 front 4 pot calipers.
I will leave this post up for one week with a running list of interested parties. At the end of the week, I will take payments for interested parties and submit the order. I'm being told it should be about a 2 week turn around from the time the order is submitted to the time of completion due to a heavy volume of work at the machine shop.

*note* you will need further components to complete this swap not included with these spacers
-Tribeca front rotors [any year]
[06/07 wrx calipers]
-z32 caliper pins
https://www.z1motorsports.com/…/fron...mm-and-…
-an extra set of caliper o-rings, same part number as whats in the caliper rebuild kits. Here is a link to a kit for just the extra set of o-rings
https://www.z1motorsports.com/…/z32-...ng-kit-…
I will keep a running list on this post, so please pm me of you have any questions or interest in getting on the list so its easier for me to keep track. "

In our mind not too bad a tested and verified option. The only known issue is wheel clearance with the oem wheels. May need a pair of 5mm wheel spacers to clear the oem wheels at 10-20$. Oh, info in [ ] are my adds to clarify the info. Not our investigation, not our info or parts order.


Very short time to get in on this as the spacer order will be submitted Feb. 2 2018!!!

Re: Direct bolt-on calipers
 

This would not be possible without fabrication work. It has been looked at and abandoned by at least one member. The lower balljoint is completely different on the GD chassis cars so the knuckle will not just bolt on. The CV shaft splines are actually the same, so that is not the issue. But getting the knuckle bolted on is the problem.

Search around and you might be able to find the thread about it.

Re: Direct bolt-on calipers
 

So HarversterUT, Have you done this swap? Does this swap use the 2 pot calipers and what is the thickness of the rotors? I'm considering during the upgrade for the front rotors/calipers being offered by SVXNation which uses Tribeca rotors and WRX 4 pots. Wondering what the combined effect would be?

Re: Direct bolt-on calipers
 

I'm pursuing the WRX 4-pot/Tribeca rotor big brake system that has been developed at SVXNation. This system requires using custom 6mm milled spacers that give the calipers a wider opening because the Tribeca rotors are 30mm thick rather than 24mm for the WRX rotors. These I sourced from Josh Bettencourt, an SVXNation admin. Bought 2007 WRX 4-pot calipers on eBay. Also purchased Nissan 300ZX pad retaining pins, which also are longer and an additional set of O-rings to seal the spacers. Will source either Stoptech slotted cryo-treated or Frozen rotors slotted rotors. Some issues involving length of cap screws that hold the two halves of the caliper together. Spacers reduce thread bite depth of the cap screws down to 10mm from 16mm for stock calipers. Have sourced 80mm shaft hex bolts to replace 75mm shaft OEM bolts. This big brake mod is alleged to be a direct bolt-on. Others have finished the installation and verify that. Waiting for my rotors before I do the installation. This installation should give additional braking capacity because the WRX rotors have a slightly larger diameter than SVX rotors (316mm vs 301mm), are slightly thicker (30mm vs. 28mm) and because the WRX calipers are 4-pot rather than 2-pot as are the OEM SVX rotors. Will report back when I finish the installation.

Re: Direct bolt-on calipers
 

I am also doing this upgrade and am waiting for my rotors which I sourced from DBA, although they don't list rotors for the Tribeca (same size rotors listed under 2015 WRX). I'm deciding between painting vs powder coating of calipers. Where did you source the longer hex bolts so I can have them when I'm read to complete the install?

Re: Direct bolt-on calipers
 

Belmetric.com

8 x BH10X1.25X80YLW - Hex Bolt Yellow Zinc 10.9 (BH10X1.25X80YLW) = $20.64
------------------------------------------------------
Sub-Total: $20.64
Flat Rate (Orders under 15oz ship via USPS First Class. Orders over 15oz ship USPS Priority.): $7.99
Total: $28.63

Note that these bolts are grade 10.9 steel, not 12.9, the highest strength. I don't know what is the steel grade for the OEM bolts (cap screws). I couldn't find any M10 x 1.25 pitch 80mm shaft grade 12.9 zinc-plated hex bolts. I did not want to use black oxide coated bolts for corrosion reasons. Grade 10.9 steel has an approximately 17% lower yield strength than grade 12.9. But the 80mm shaft gives 50% more thread bite depth than the 75mm OEM bolts, bringing it almost back to the 16mm of bite that the stock configuration has. No one seems to know the torque setting for tightening the OEM bolts, which could give a clue as to their steel grade. With grade 10.9, zinc coated 10mm shaft diameter screw, you should use 45.2 lbs-ft unless the vendor says otherwise.

Re: Direct bolt-on calipers
 

Jvan - What flavor DBA rotors are you getting? Looked at the T3 - 4000 series, but they are pretty dear. T3 -5000 series is out of sight.

Re: Direct bolt-on calipers
 

I purchased the 4000 series from Hawk performance; they had a 50% sale in addition to their normal discount so the cost of a set of slotted/drilled 4000 series gold was $240 per pair w/frees shipping. I think that was a great deal but it ended last week.