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302mm will work also that what i have on my car well its act slightly larger but 302mm works well in mine..(mine are reduced st205 discs) , I would be wary of the pads you choose to use also as some have the braking material located differently on the backing plate and this can have you braking surface of the pad coming out over the top of the disc. have you looked into Vw discs they easily available to you over there? some of those are 300mm, Subaru seem to be the most common for this conversion

I can post pictures of my conversion of the Gt-four brakes on the st202 hubs if you like?

This post has been edited by Trodai: Nov 27, 2013 - 4:13 PM

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VW makes a disc that's 288mm or 312mm. More than likely, Subaru would be likely to have an 11.9" (300mm) rotor that would fit.

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Yes, please post pics haha

What size disc spacers did you use for the front?

my conversion (copied from my build trend in another form)
st202 wishbone with Polish bushes
st202 drop links.. (after working on a carlos a while back wondering will the st185 drop link fit? and same dimensions? i need to check this out)Updatewill be fitting Polish drop links when due replacig
st202 balljoint the size of the casting seems to differ in manufacters so some will be tighter than others some just wont fit with the full sized disc in oem fitting position
St202 front strut casing with koni inserts and st202 shock top and st182 spring rubbers( Springs will be changed back to St205 Oem or st205 trd
St205 caliper with mounting point machined to help mounting surface contact and allow disc clearance inside of caliper
1mm spacer made up to fit inside disc to help clear balljoint
st202 hub with the brackets threaded and custom grade 11 bolts(iirc they are same grade as oem anyway) made up so there is a shank that fits inside the st205 caliper hole so it has a good snug fit..., the st202 hub uses the same wheel bearing as the st205 so was happy with that.. i am also using st202 abs sensors,
st205 subframe
st202 ARB with Polish Arb bushings
st205 steering rack with modified st205 inner and outer tie rods
st205 disc reduced to 304mm diameter (would suggest going 1mm or 2mm smaller at this was slightly rubbing the retaining clip fro brake pad pins.
here are the pics

I have more if needed the bolts are grade m14x1.25mm grade 11

here is a picture of 2 different brand of brake pads as you can see one has less material that the other and is also lower placed on the backing plate

are the subaru discs not 295mm and 297mm? i will probably replace mine again with machined st205 discs but if i wasn't i am looking at Volvo discs 302mm diameter and 26mm thickness? even 296 supra discs?, Volkswagen Caravelle models have a 300mm vented disc

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yeah that's what i was researching too, the 04 sti is really close to the gt specs but just larger in diameter, i was going to trim it down with my brake lathe. let me know how it works out. i still need to buy a set of calipers before i buy the rotor to play with.

Just a thought....BRZ rotors are approximately 295x25.5 mm AND 5x100

This post has been edited by playr158: Dec 24, 2013 - 1:45 PM

if you see newcelica.org there is a guy who bolted(without modification) on avensis caliper and 295mm rotor onto his 7th gen celica.

i don't know the thickness of the rotor though

Only 26mm thick.

Honestly the 4mm or whatever is not going to make a difference. Thickness is really a marginal issue as it will be compensated for by the pads.

This post has been edited by playr158: Jan 14, 2014 - 2:30 PM

ok, so the STI rotor sits awesome on the car, but the extra offset of 5 mm that clears the ball joint is so bad that makes the caliper seat not centered.

More english prease?!

The rotor sits perfect and does not hit the ball joint. But is off center to the caliper is what i'm gathering.

Does it sit too much towards the inside of the car or does it sit more towards the outside?

and your previous post said it was 326mm diameter...isn't it 26mm too large for the caliper as well?

This post has been edited by playr158: Jan 12, 2014 - 9:38 PM

found this on ebay, bought the last set, what are the chances...

http://www.ebay.com/itm/SET-OF-4-ALUMINUM-...04e&vxp=mtr

make sure they dont sit higher than the rotor face!!

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the rotor sits perfect, and the brake surface is excellent.

however i would either have to grind up to 5 mm from the caliper bracket area to even have it centered. i cannot even measure how much that rotor has to be resized, however i will post a pic in a couple of hours.

the rotor sits too much towards the outside, if we could find a caliper for this rotor, it woud be awesome....

pics...







but.... to keep caliper centered....

lots of grinding..



even trying to bolt caliper outside.. using a 20 mm spacer..

so just keep it simple, and get the supras, if you are able to find some that can be drilled and someone to do it...

or you want this rotor, you need to find another caliper.



lots of grinding....



that puts the rotor and wheel to far away from the center of rotation, and thats a no no...

Honestly, We could easily have an adaptor bracket made for this. (IE small block of aluminum cut and drilled) So that the caliper sits in the correct place and we have a bolt on rotor.

It looks like the caliper mounting holes are sitting right on top of the knuckle holes. This would be a pretty easy adaptor to fab up.

Then I could get these:
.

well actually no, because the caliper is not all the way sitting down and grasping the rotor... it still needs to be pushed down at least 10 mm, and still the holes do not align.

i was looking also at a camry spindle, looks alot like our celicas, with the difference of the mounts spaced further, giving chance of a bracket, but then again, too much trouble when u can just drill supra rotors.

Gotcha.
Well like all you other nuts, I picked up a "X" rotor today. We'll see how she fits and i'll report back, it should fit minus a 7mm offset.
Which is an easy $25 spacer and that's it, much easier than drilling.

PS njccmd2002 I saw your thread about brake rotors and the Subaru. I assume this was your research for the STI rotor.

To add information

CELICA GT OEM ROTOR
_____________________
Outer Dia:.....275mm
Height:.........49.3mm
Nom Thick:....28mm
Min Thick:......26mm
Hub Reg:.......55mm
Bolt Size:.......14.5mm
Weight:.........15lb

This post has been edited by playr158: Jan 16, 2014 - 2:11 PM

yup sti rotor

sooooooo.........BOLT ON

Rotor:
Part Number: Centric 121.47021
292MM FRONT DISC

*I do believe there is a 295mm disc as well*






(NOTE: This is with worn ST205 OEM pads, and unconnected calipers)

Subaru rotor? Thats good. Looks like regular impreza. Hmmm that is awesome. Maybe 2 mm shim spacers each side and perfect!!!!!

Yup BRZ, Legacy, Impreza wrx and a few others share this rotor.

I'm getting DBA 5000 two piece

Info added! Thanks Dan!

I will be adding more info over the next few days as to our new found added options!

This post has been edited by Tigawoods: Jan 17, 2014 - 11:31 AM

That's a nice find. Two questions:

You removed the dust shield for the rotors right?

How did you compensate for the difference in height?

I never had dust shields on this setup with the brz rotors.

There is no compensation, put everything on normally.

So an update to this thread would be

Front: ST205 calipers bolted on and WRX front rotors bolted on

Rear: ST205 Calipers shimmed 5mm away from the bracket towards thr rotor and ST205 rotors?

Now we need to find an ST205 rotor replacement since I'm guessing they're gonna get hard to find and more expensive as time goes on.


The only thing I dont like about the setup is that the front brake rotors are smaller than the rears, 20mm smaller, too.

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that stuff had been added to the OP already.

St205 rotor replacement for what the rears? If so I have a site from the UK that sells EBC oem replacements. I doubt they will discontinue them for a while.

My personal experience with the larger rear rotors is that the brake bias feels ALOT more even. Braking isnt as nose heavy and the car doesnt dive forward at all during heavy braking, which I find VERY helpful when I race.

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That's interesting...

Yeah I was suggesting a replacement for the rears that perhaps we could find local to us.

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Ah gotchya. I think the 205 rears are out best bet.
The only downsides of that rotor are the spacing of the caliper and the ebrake shoe only has half contact on the inner drum.

Those arent really terrible downsides in my eyes.

the company in the UK that I have listed in the OP ships super fast with tracking too

I will keep my eyes open for any rotors that look like a match to the 205 rears

This post has been edited by Tigawoods: Mar 27, 2014 - 1:19 PM