Let's talk Brembo 4 pots

[TomsSVX]

Ok... We found out the brembos bolt to our hub. The 5x114.3 rotor also lines up with the caliper on the hub. the dilema is that the caliper is held away from the rotor too much. Thanks to Jman050 I was able to measure what we have here and I know what we will need to make the 4 pots work.

The stock Sti rotor is about 12.8" in diameter... Not too shabby.

The stock Sti caliper is .510 inches or 12.95mm too tall for the Sti rotor. SO this means we need a rotor to be 1.02 inches wider in diameter or 25.90 mm. Do some research for me and try and find a rotor with the same offset dimensions as the Sti with a diamter of 13.83 inches in diameter with at least 60mm of surface area. It needs to be 30mm thick too.

tom

[TomsSVX]

I checked DBA's database and they don't list any 352mm rotors with a 53mm height 30mm thickness and 58mm center with 5 lugs. I sent them an Email asking if we could find them. I will let u know more when I do

Tom

[Hocrest]

I posted up over at the Grassroots Motorsports board, I'll let ou know if I learn anything...

[solarsvx]

tom maybe we can have them made,?

did we find out if the 350z//evo//sti are all the same brembo caliper part#s?

[jman050]

Thats not as far off as I expected. But hopefully we can find a rotor solution and open up our brake possibilities.

[jman050]

Does that .51 inches really not allow us to use a 17inch wheel?

[TomsSVX]

well... it is even going to be close on 18''s. If it is .51" further our it is .1" closer to a 18" wheel than they are on the Sti with 17"s

tom

[jman050]

yeah I just had no idea the clearance was that close on an sti. It was a dumb question:o :rolleyes:

[longassname]

There's a possibility I could be talked out of my wheels. Probably not but maybe. It's time for tires. I seem to remember wanting to try a particular tire that only came in the size i wanted for 17's.

[TomsSVX]

Someone has got em... I need the dimensions to the Sti caliper from Brembo... where can I find those??

Tom

[jman050]

Someone has the correct size rotors? although it will prob be no use to me its nice to hear. I just cant afford to take the loss on the rotas and brand new kumho MX that i just bought in 17s with under 200 miles on them to buy 18's with even more expensive tires and then drop another $200+ on bigger front rotors.

I'm going to try and find a way to drill new mounting holes closer to the hub or cut, shorten, and re-weld the mounting arms on the svx in order to make these fit under 17s.

[jman050]

Someone has got em... I need the dimensions to the Sti caliper from Brembo... where can I find those??

Tom

I cant see anyone else being able to give you the exact dimensions except brembo themselves

[mikecg]

I checked DBA's database and they don't list any 352mm rotors with a 53mm height 30mm thickness and 58mm center with 5 lugs. I sent them an Email asking if we could find them. I will let u know more when I do

Tom


Would 355mm work? Most of the big brake upgades for the STi use a 355mm, and I'm sure you could probubly get the rotor by it's self.

[TomsSVX]

possibly but there may be clearance issues on the caliper

Tom

[SilverSpear]

What about custom rotors according to our specs? Maybe a group buy?

[nico i wrx u]

been there done that! i am just kidding guys.

see tom now you now what i am talking about i wish it would have worked but it wont. and just think we are on the front and the rear is next, who knows what is going to happen in the rear.

i think we have a better chance with the wrx 4pot 2pot on with brembo rotors and 17inch rims will clear becuse the stock svx rims all most worked when we tried it.

[TomsSVX]

sti rotors are too wide for wrx 4 pots

Tom

[jman050]

I dont think the rears will be half as hard I just need to buy the sti backing plate.

[nico i wrx u]

i just got to machine the inner 4pots to make them work.

about the rears i have no comment on doing it but thinking about the fronts left me with out any hope so something in the rear going to be another head game.

[TomsSVX]

I am going to go over to the shop tonight and take pictures so anyone confused, hopefully they will clarify. I also want to contact Wilwood and ask them about making brackets for the STi front brake kit so it will fit our cars. they may be interested to have the only US BBK for the SVX

Tom

[jman050]

if they can make brackets to fit under 17s and custom rotors that are offset I think alot more svx guys would purchase them instead of having to upgrade to 18s.

[TomsSVX]

http://www.subaru-svx.net/photos/files/TomsSVX/42398.JPG

http://www.subaru-svx.net/photos/files/TomsSVX/42399.JPG

http://www.subaru-svx.net/photos/files/TomsSVX/42400.JPG

http://www.subaru-svx.net/photos/files/TomsSVX/42401.JPG

http://www.subaru-svx.net/photos/files/TomsSVX/42402.JPG

Tom

[TomsSVX]

More bad news though. we cannot use the brembo caliper at all. The caliper was originally design for a smaller rotor I believe than a stock Sti rotor. If you increase diamter of the rotor to fit the brembos on the SVX hub, you will be hitting the sides of the caliper. SO... I really need to get in touch with Wilwood. Jman, let me know how we want to go about getting this stuff back to you so you can resell them

tom

[-JJ-]

sti rotors are too wide for wrx 4 pots

Tom

There are kits here in Aus to mount bremos on to a GC8 wrx (originally 4 pots). There is also a kit to allow sti rotors to be used with 4pots!

I assume we get differnt sized sti rotors out here?

tom did you check the Aussie DBA catalouge?? might have some differences

When i reaserchd a 4 pot upgrade here, i was going to bolt up 4 pots and get a DBA wrx disk re-drilled with 114.3 stud pattern.

I have chosen to try and source some disks in the US, because of my finacial situation ( it will cost me twice as much here in Aus for disks as getting disks imported from the US)

Cheers,
Jake

[TomsSVX]

I sent Wilwood an email asking if they can make the different brackets. If not, I may be able to order the kit and have my own brackets made. these "should" fit under 17" wheels... more when I know

Tom

[jman050]

More bad news though. we cannot use the brembo caliper at all. The caliper was originally design for a smaller rotor I believe than a stock Sti rotor. If you increase diamter of the rotor to fit the brembos on the SVX hub, you will be hitting the sides of the caliper. SO... I really need to get in touch with Wilwood. Jman, let me know how we want to go about getting this stuff back to you so you can resell them

tom

what do you mean they will be hitting the sides of the caliper?

Oh nvm i understand

[TomsSVX]

ok, I measured the distance from the top of the pad to the top of the rotor. This is the VERY close to the distance from the top of the rotor to the underside of the caliper on each end. So, if you get a bigger rotor, you will be either hitting the caliper or not have the pad all the way on the rotor

Tom

[TomsSVX]

Well I got in contact w/ Wilwood. they said there is probobly not enough interest to make a full blown kit but they suggest I order the WRX Sti kit and modify/fabricated new brackets to make it work. I asked them how many orders it would take to get this off the ground... Anyone interested? They would fit under 17" wheels with the proper offset

Tom,

[jman050]

are you saying that willwood would make brackets if you order the sti kit or are they saying we the consumer should make the brackets?

[TomsSVX]

we the consumer should make it because they won't do customn work

Tom

[jman050]

ok thanks wilwood haha:rolleyes:

[wawazat??]

OK, so today I busted out the Stoptechs (WRX kit, calipres and rotors-dual drilled) I bought and did some fitting. I'm making a basic bracket of heavy-guage aluminum angle to trial fit them and then will get them to a machine shop for a solid bracket. Unlike the STi Brembos in the pics above (thanks Tom!), these use a univeral caliper and a custom bracket. This, as you would expect from Tom's pics, places the caliper too far out from the hub centerline by 1/2" to effectively use the full rotor surface area. Grinding down the WRX bracket would make it too thin to effectively mount the caliper but the CL of the holes and basic design can be used.

Todd

jman- I *may* be interested in your STi brakes if you still have them. I'll let you know later this week.

[SilverSpear]

Tom, if Wilwood does it for less than Stoptech, I am surely interested...
Keep us posted

[jman050]

wawazat- im keeping the brembos for now and im going to try and custom fit them in the next 2 months.

[wawazat??]

OK, thanks.

[TomsSVX]

anybody interested in this NEEDS to look at this http://www.subaru-svx.net/forum/showthread.php?p=459955#post459955

please help the community and jump in on the group buy

Tom

[Stevebsy]

How about a Dodge Magnum rotor with 345dia/55ht/28thk? they are 5x114.3


EBC rotor catalog:
http://www.ebcbrakes.com/Assets/discdrum2007.xls


I checked DBA's database and they don't list any 352mm rotors with a 53mm height 30mm thickness and 58mm center with 5 lugs. I sent them an Email asking if we could find them. I will let u know more when I do

Tom

[TomsSVX]

thats 7mm too small. Not to mention, my measurements have shown me that the calipers will not effectively support a rotor larger than the STi rotor. Check the thread in my sig for the Brembo group buy, they are an even better deal

Tom

[Gizmotronicus]

NO idea what it looks like in there but what about trying to use a whole STi front hub? Just i screwy thought..

[TomsSVX]

Do you really think we would have done all this research if we could just use the hub??? No the strut mounting points are different as well as other things

Tom

[Gizmotronicus]

Well. . . It was just an idea. . . I mean there have been times I get so focused on one idea I miss another.

[mikecg]

I dont know anymore, guess. I think the stock size is pretty good when done right.

http://www.subaru-svx.net/photos/files/mikecg/43567.JPG

http://www.subaru-svx.net/photos/files/mikecg/43568.JPG

[icingdeath88]

Might have stumbled on a solution to this. A dude in Japan posted pics of STI 4-pot Brembos on his SVX, and said the rotors were from a V36 G37 coupe. Can anyone check the dimensions of those and see whether they make sense?