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The GT-Four Brake Upgrade - 6G Celicas Forums

Topic #90206 184 posts Started by Tigawoods
I l know its pricy investment initially however. More adapt for track...now the question if it fits!!! Lol

Learned a lot in 10 years...I hardly log in anymore, last loginToday Sept 6 2019, and I was forced just to clarify a post. LOLIf you PM me and I dont respond, dont fret or cry. Im alive, better post your questions in the thread below, maybe I log back in2grfe Swapped...Why I chose the 2GR, before you ask read here...A great civilization is not conquered from without until it has destroyed itself from within.@llamaraxing in Instagram is the best way to find me. I hardly log here anymore.
That's not a bad price. I spent a lot more on my TRD Front BBK. Wish this would've been around before I bought my set.
so? front gt4 calipers with those counterspace garage rotors and tapping thread on the factory hub and all bolt on?
No,no, no. We dont know the offset specs of those rotors.

The hat looks too tall

Learned a lot in 10 years...I hardly log in anymore, last loginToday Sept 6 2019, and I was forced just to clarify a post. LOLIf you PM me and I dont respond, dont fret or cry. Im alive, better post your questions in the thread below, maybe I log back in2grfe Swapped...Why I chose the 2GR, before you ask read here...A great civilization is not conquered from without until it has destroyed itself from within.@llamaraxing in Instagram is the best way to find me. I hardly log here anymore.
I printed the image and while I could not get it to print at scale, I got it very close to, given that is not 100% scale ( yet ) I cant say it with certainty, but it does seem to fit,


but if my calculations were right back then, you should not consider any disc with a height of 55mm or higher, while it will clear everything up to 59 mm height ( I think ) and driving straight; under stress when cornering and high speed suspension flexing, the ball joints will come in contact with the disc. ( of course this will change from setup to set up, ride height suspension mods etc, but when I experienced the issue ( ball joints hitting disc ) I did some more calculations and came up with a safe and very conservative disc height to fix the issue. that's when I upgraded to the Supra NA disc.

This post has been edited by Culpable04: Mar 23, 2015 - 1:44 PM
i have been looking at wilwood hats, and they dont measure in mm, they use hat offset.

the bolt pattern is 5x3.93 thats the closest to 5x100

hat offset i beleive is close would be 0.5 or less, the problem is that there are 2 different ones, with the rotor bolt circle of 8*7.0, and i dont know what the bolt pattern in this rotor is, or would it be compatible with wildwood hats..

looks like there are 8 bolts, but unsure...



http://www.wilwood.com/Hats/HatList.aspx

just search at 5x3.93

Learned a lot in 10 years...I hardly log in anymore, last loginToday Sept 6 2019, and I was forced just to clarify a post. LOLIf you PM me and I dont respond, dont fret or cry. Im alive, better post your questions in the thread below, maybe I log back in2grfe Swapped...Why I chose the 2GR, before you ask read here...A great civilization is not conquered from without until it has destroyed itself from within.@llamaraxing in Instagram is the best way to find me. I hardly log here anymore.
Does anyone have the part number for the rear st205 caliper bolts? Or the specs of the bolts so I can buy the right sized bolt?
>
QUOTE (olilaroche @ Apr 20, 2015 - 7:18 PM) *
>Does anyone have the part number for the rear st205 caliper bolts? Or the specs of the bolts so I can buy the right sized bolt?

I cant tell off the top of my head. They should be the same thread pitch as the stock bolts but a few MM longer

1995 GT::::Diffusing the Situationエキサイティングカーレーシングチーム!march2010 COTM:6GCfeature2014:january2015-2016-2018 COTM
Would the supra turbo bolts would be the same? Since its basically the same caliper...
lots of cool info in here guys good work on all parts!
i know daniel added it to the sticky post, but since this is one of the most popular upgrades for the 6gc guys in general, i think it needs to be available right at the top of the forum, with less clicks..lol
facebook age and all.. wink.gif

Former Team 5SFTE pro member ;)13.6@108MPH, 5SFTE Powered
haha, thanks manny, there is still alot more information that needs to be added and organized, but we have all put it on pause since it driving season haha. I know Fate paused his brake and 5x114 swap for the summer.

1995 GT::::Diffusing the Situationエキサイティングカーレーシングチーム!march2010 COTM:6GCfeature2014:january2015-2016-2018 COTM
I'm surprised no one mentioned the cadillac catera (2001) and just redrilling those to 5x100. I was told that would work as well

This post has been edited by easternpiro1: Apr 27, 2015 - 1:38 AM

QUOTE (Galcobar @ Oct 15, 2008 - 2:44 AM)You want power but have no money. That's a problem.Cheap. Reliable. Fast. Pick two.
I'm using the Cadillac Catera rotors, but I've been interested in test fitting Subaru BRZ rotors.
>
QUOTE (bsamps4 @ Apr 27, 2015 - 8:24 AM) *
>I'm using the Cadillac Catera rotors, but I've been interested in test fitting Subaru BRZ rotors.


They fit right on but are kind of skinny from what I've been told

QUOTE (Galcobar @ Oct 15, 2008 - 2:44 AM)You want power but have no money. That's a problem.Cheap. Reliable. Fast. Pick two.
>
QUOTE (njccmd2002 @ Mar 19, 2015 - 2:27 PM) *
>Ok. To add more fuel to drama. I have found rotors very close to spec. For the scion frs. I have been looking on phone so i may have missed some stuff.

http://www.fr-sforum.com/forums/targa-newf...920/topics/8058

Some pics to summariZe



It comes as a kit. Wonder if rotors can be sold



This is where i get lost.


It states 299 mm with 32 mm diameter and 5x100.

Wonder if sold separately and if they are centered for the gt4 caliper



I think i found the hat needed for the job. Wilwood part 170- 8324. May have right offset or very close to needed.

Learned a lot in 10 years...I hardly log in anymore, last loginToday Sept 6 2019, and I was forced just to clarify a post. LOLIf you PM me and I dont respond, dont fret or cry. Im alive, better post your questions in the thread below, maybe I log back in2grfe Swapped...Why I chose the 2GR, before you ask read here...A great civilization is not conquered from without until it has destroyed itself from within.@llamaraxing in Instagram is the best way to find me. I hardly log here anymore.
>
QUOTE (njccmd2002 @ Apr 29, 2015 - 4:38 PM) *
>>
QUOTE (njccmd2002 @ Mar 19, 2015 - 2:27 PM) *
>Ok. To add more fuel to drama. I have found rotors very close to spec. For the scion frs. I have been looking on phone so i may have missed some stuff.

http://www.fr-sforum.com/forums/targa-newf...920/topics/8058

Some pics to summariZe



It comes as a kit. Wonder if rotors can be sold



This is where i get lost.


It states 299 mm with 32 mm diameter and 5x100.

Wonder if sold separately and if they are centered for the gt4 caliper



I think i found the hat needed for the job. Wilwood part 170- 8324. May have right offset or very close to needed.


Tell me more!

The "Fly Low" Project: 3rd Gen 3SGTE
I will. I need to re do my calcs sgain

Learned a lot in 10 years...I hardly log in anymore, last loginToday Sept 6 2019, and I was forced just to clarify a post. LOLIf you PM me and I dont respond, dont fret or cry. Im alive, better post your questions in the thread below, maybe I log back in2grfe Swapped...Why I chose the 2GR, before you ask read here...A great civilization is not conquered from without until it has destroyed itself from within.@llamaraxing in Instagram is the best way to find me. I hardly log here anymore.
The gt4 rotor has a hat height of 1.129 inches. To that substract a small recess portion of 0.048 and the face thickness of 0.249. You get aprox offset of 0.832 inches .

0.77 inches of offset is close to that and might even pull away disc little away from ball joint. Im waiting on Mike to measure the supra hat. But again, im not 100 positive. But this hat is already 5x 100. Application. Hub may be a little wide. Not by much. Maybe 0.141 inches

Learned a lot in 10 years...I hardly log in anymore, last loginToday Sept 6 2019, and I was forced just to clarify a post. LOLIf you PM me and I dont respond, dont fret or cry. Im alive, better post your questions in the thread below, maybe I log back in2grfe Swapped...Why I chose the 2GR, before you ask read here...A great civilization is not conquered from without until it has destroyed itself from within.@llamaraxing in Instagram is the best way to find me. I hardly log here anymore.
is there anybody who already uses the rear st205 calipers that can unscrew 1 bolt to measure it? I'm stuck a this point! i know it's slightly longer than the st204 gay caliper, but i don't know by how long!
>
QUOTE (olilaroche @ May 1, 2015 - 9:28 AM) *
>is there anybody who already uses the rear st205 calipers that can unscrew 1 bolt to measure it? I'm stuck a this point! i know it's slightly longer than the st204 gay caliper, but i don't know by how long!


Get one and cut to lenght. You will need to use washers

Learned a lot in 10 years...I hardly log in anymore, last loginToday Sept 6 2019, and I was forced just to clarify a post. LOLIf you PM me and I dont respond, dont fret or cry. Im alive, better post your questions in the thread below, maybe I log back in2grfe Swapped...Why I chose the 2GR, before you ask read here...A great civilization is not conquered from without until it has destroyed itself from within.@llamaraxing in Instagram is the best way to find me. I hardly log here anymore.
>
QUOTE (njccmd2002 @ May 1, 2015 - 9:03 AM) *
>The gt4 rotor has a hat height of 1.129 inches. To that substract a small recess portion of 0.048 and the face thickness of 0.249. You get aprox offset of 0.832 inches .

0.77 inches of offset is close to that and might even pull away disc little away from ball joint. Im waiting on Mike to measure the supra hat. But again, im not 100 positive. But this hat is already 5x 100. Application. Hub may be a little wide. Not by much. Maybe 0.141 inches


Very interesting.

EDIT: My only concern that matching the gt4 rotor specs would still require shaving of the caliper's mounting points.

This post has been edited by Fate: May 1, 2015 - 8:21 PM

The "Fly Low" Project: 3rd Gen 3SGTE
There is always a tradeoff. Always. You can always look for a 30 mm disc. Its never going to be perfect.

Learned a lot in 10 years...I hardly log in anymore, last loginToday Sept 6 2019, and I was forced just to clarify a post. LOLIf you PM me and I dont respond, dont fret or cry. Im alive, better post your questions in the thread below, maybe I log back in2grfe Swapped...Why I chose the 2GR, before you ask read here...A great civilization is not conquered from without until it has destroyed itself from within.@llamaraxing in Instagram is the best way to find me. I hardly log here anymore.
>
QUOTE (olilaroche @ May 1, 2015 - 9:28 AM) *
>is there anybody who already uses the rear st205 calipers that can unscrew 1 bolt to measure it? I'm stuck a this point! i know it's slightly longer than the st204 gay caliper, but i don't know by how long!


I'll do you one better. Here is the Toyota part # 90105-08317. You will need 4

I'll do you one better. Here is the Toyota part # 90105-08317. You will need 4
[/quote]

that's the best news of my day! thank you so much!😀

I'll soon be able to install everything on the car... one step closer to get it back on the road!
After i installed my rear gt4 brake kit. I get intense squeals... Its intermenit but my foot is not even on the brakes. Im using gt4 wrc pads and rear supra brake pad shims. Didnt fit quite perfectly. Gonna take it apart and see whats going on. And got 2 washers on the rear to space the brake caliper 5mm away from the hub
>
QUOTE (mi645 @ May 2, 2015 - 3:11 PM) *
>After i installed my rear gt4 brake kit. I get intense squeals... Its intermenit but my foot is not even on the brakes. Im using gt4 wrc pads and rear supra brake pad shims. Didnt fit quite perfectly. Gonna take it apart and see whats going on. And got 2 washers on the rear to space the brake caliper 5mm away from the hub


have you found your rear brake problem ?
>
QUOTE (felipeandrest205 @ Mar 16, 2015 - 11:06 PM) *
>For the rear brake rotors, I was looking at the WRX (G3) up to 2007, there are some difference from the height, but maybe can do something

DBA 2663 WRX
Specifications
Diameter 290
Height 64
Thickness 18
Min Thickness 16
C/Hole 58
Bolt holes 5 X 100 PCD

CELICA
Vent Vented
Diameter 315
Height 59
Thickness 16
Min Thickness 15
Centre Hole Dia 55
Bolt Holes 5

There are just 5mm of difference on the height and a minor difference on the thicknes. Anyone has tested this?

WRX from 2009 and up, rear brake rotors have a 64mm of height vs 59mm of the Celica ones, maybe there could be an option


Can someone check to see if this will work? Seems pretty legit

QUOTE (Azncelica @ Mar 4, 2012 - 11:43 PM)I started with what I know to do, I swap engine into my car, I knew it was too much work to make it a AWD. I kept it FWD. Went to take a crack at doing the wiring conversion. Than, I realize, shoot, this is out of my league.
Have another brake disc mates



Its from a Subaru Liberty/Legacy
DBA makes them and a lot of other manufacturers
will test my theory, and ordered parts for the right disc today. 333 USD crossing fingers

Learned a lot in 10 years...I hardly log in anymore, last loginToday Sept 6 2019, and I was forced just to clarify a post. LOLIf you PM me and I dont respond, dont fret or cry. Im alive, better post your questions in the thread below, maybe I log back in2grfe Swapped...Why I chose the 2GR, before you ask read here...A great civilization is not conquered from without until it has destroyed itself from within.@llamaraxing in Instagram is the best way to find me. I hardly log here anymore.
Hahaha. No interest. Thats ok..

Learned a lot in 10 years...I hardly log in anymore, last loginToday Sept 6 2019, and I was forced just to clarify a post. LOLIf you PM me and I dont respond, dont fret or cry. Im alive, better post your questions in the thread below, maybe I log back in2grfe Swapped...Why I chose the 2GR, before you ask read here...A great civilization is not conquered from without until it has destroyed itself from within.@llamaraxing in Instagram is the best way to find me. I hardly log here anymore.