FIGS Engineering: Supra Disc Upgrade

JapCarForum Car Manufacturers Lexus/Toyota IS200 / IS300 / SPORTCROSS / Altezza FIGS Engineering: Supra Disc Upgrade

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Poll: If a group buy was arranged, how many of you would be interested?

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Yes

100.00%

Votes 6

Votes 0

Total 6 vote(s) 100%

Show Results

sprinter2012
Posting Freak

2,484

20-04-2019, 02:22 PM

Right guys, time for my next upgrade/mod!

I am in the process of ordering, after having a chat with Mike from FIGS, a set of caliper brackets that will allow me to mount my stock calipers further out, enabling me to run 323mm UK Spec Supra discs instead of the 296mm stock ones.

It really is a no brainer if you're thinking about a brake upgrade for an IS200/IS300/Altezza.

My reasons for going for this upgrade over doing the whole Supra caliper upgrade are as follows.

No chopping bits off or removing the dust guard
You don't have to remove or bleed the brake lines
Useable stopping power is virtually identical to the Supra TT calipers, as the tyres become a limiting factor if you go any higher
WAY cheaper to buy and maintain
Better modulation/pedal feel while braking

Installation

Intallation is simple on these. It's only two steps more than changing your brake rotors during a normal brake job. (Three if you're adding SS lines when you do it.)

-Once your car is lifted securely with the wheels removed you will unbolt & remove the caliper just like when you're changing pads. *If you're doing brake lines now is the time to do it. *

-Remove pads & pad clips from the caliper bracket. You'll need the pad clips for the new bracket.

-Remove the 2-17mm bolts that hold the bracket & remove bracket.

-Remove stock rotor from hub

-Bend back top & bottom of dust sheild approx. 1/4 inch to clear TT rotor (I left these on as they aid in cooling)

-place Supra rotor on hub & check dust sheild clearance. Once ok procede.

-either remove slide pins from stock caliper bracket & press into new caliper bracket **or** press new slide pins into new caliper bracket (pay attention top & bottom are different)

-install new caliper bracket (pay attention to right & left sides)

-install pad clips & pads

-replace caliper & bleed brakes

-bed pads & enjoy.

And a small quote from a guy who has done his maths...

Quote:The force (torque) is directly proportional to the increase in size (radius.) t = F x R

So since the force is equal (same caliper, same piston cross section) the increase in torque is directly the increase in radius.

So 1" on top of 11.7" is an 8% increase in potential braking force. Add in the metalurgical differences of the alloyed rotors and the improved thermal charateristics and I would throw another 5-10% given my experience with the two peice rotors I am running.

I've already ordered the Supra discs and new front pads, and I've also decided to fit new rubber boots and slide pins while I'm at it.

Also just to note, Mike has done me a good deal on this set, as my intention is that once you guys see what a great upgrade this is, we can then organise a group buy with FIGS.

So just to summarise: Stock IS200 Calipers, Stock IS200 Pads, UK Supra Discs

These are not my pictures, but here are a few I found on an american forum to show the brackets, and how the Supra discs look with OEM 17" wheels fitted...

[Image: P1070960.jpg]

Edited 02-06-2012, 02:34 PM by sprinter2012.

sprinter2012

20-04-2019, 02:22 PM #1

No chopping bits off or removing the dust guard
You don't have to remove or bleed the brake lines
Useable stopping power is virtually identical to the Supra TT calipers, as the tyres become a limiting factor if you go any higher
WAY cheaper to buy and maintain
Better modulation/pedal feel while braking

Quote:The force (torque) is directly proportional to the increase in size (radius.) t = F x R

So since the force is equal (same caliper, same piston cross section) the increase in torque is directly the increase in radius.

So 1" on top of 11.7" is an 8% increase in potential braking force. Add in the metalurgical differences of the alloyed rotors and the improved thermal charateristics and I would throw another 5-10% given my experience with the two peice rotors I am running.

S
Banned

1,153

20-04-2019, 11:35 PM

Tbh the reason I was looking into brake upgrades wasn't an increase in braking power but just because the standard setup are so poorly designed/a weak point of the car and I'm sick of needing to build calipers and carriers.

I'd still be interested though Smile

S

20-04-2019, 11:35 PM #2

sprinter2012
Posting Freak

2,484

20-04-2019, 11:45 PM

Stix44 Tbh the reason I was looking into brake upgrades wasn't an increase in braking power but just because the standard setup are so poorly designed/a weak point of the car and I'm sick of needing to build calipers and carriers.

I'd still be interested though

Another bonus of this setup is that while improving braking performance in basically every area, when you're not using them to their full potential, the increased rotor diameter means you need less braking force to get the same stopping power. Which = less wear to the pads and discs, so longer maintenance intervals.

sprinter2012

20-04-2019, 11:45 PM #3

Stix44 Tbh the reason I was looking into brake upgrades wasn't an increase in braking power but just because the standard setup are so poorly designed/a weak point of the car and I'm sick of needing to build calipers and carriers.

I'd still be interested though

purplewitch
Posting Freak

3,953

20-04-2019, 11:46 PM

Bear in mind then, supra calipers are notorious for seizing too

[SIGPIC][/SIGPIC] [COLOR="DarkOrchid"]That symbol on the side of my door.. Definition by FirebirdPhil 'Translated it means -
"try to overtake - go on give it a go I dare you......." [/COLOR]
I'm not an Outlaw; I'm a Poutlaw! Purple Supras are the bestest! I love purple .. a lot lot lot Smile

purplewitch

20-04-2019, 11:46 PM #4

Bear in mind then, supra calipers are notorious for seizing too

sprinter2012
Posting Freak

2,484

20-04-2019, 11:48 PM

purplewitch Bear in mind then, supra calipers are notorious for seizing too

Ooh really? I read a post on the MK4OC not too long ago that basically said if you buy second hand UK calipers now, they almost certainly will need a refurb before you refit them to anything.

sprinter2012

20-04-2019, 11:48 PM #5

purplewitch Bear in mind then, supra calipers are notorious for seizing too

Ooh really? I read a post on the MK4OC not too long ago that basically said if you buy second hand UK calipers now, they almost certainly will need a refurb before you refit them to anything.

purplewitch
Posting Freak

3,953

20-04-2019, 11:53 PM

[COLOR="DarkOrchid"]I don't think they even bother talking about it much anymore, it's a given.. I've gone through stages in the last ten years where one every three months has seized up .. admittedly having two supras, doubles my chances and one that doesn't go far in winter encourages this .. but one of the first things my supra expert mechanic said was 'Your caliper is seized, get used to this'

We even have an almost drive through routine now where I drop in, get it unseized and off I go... don't get me wrong it's not constant - I get one that just does it over and over for a while then it's fine . then another starts [/COLOR]

Edited 01-06-2012, 09:30 AM by purplewitch.

purplewitch

20-04-2019, 11:53 PM #6

sprinter2012
Posting Freak

2,484

20-04-2019, 11:59 PM

I think Supra calipers (along with other big OEM brakes like the 350Z Brembo ones) suffer from what I refer to as 'lazy brake syndrome'

Where the brakes are pretty high performance, but they need a good thrashing on a regular basis to keep them in good working order.

I feel your pain having to unseize yourself that often though Sad

sprinter2012

20-04-2019, 11:59 PM #7

S
Banned

1,153

21-04-2019, 02:15 AM

Sprinter I'm not going to tell you specifics but thank you very much.

I think you might have helped me get a project, that I had given up on, back on track Smile

+rep

S

21-04-2019, 02:15 AM #8

Sprinter I'm not going to tell you specifics but thank you very much.

I think you might have helped me get a project, that I had given up on, back on track Smile

+rep

el_bandido
Account not Activated

2,757

21-04-2019, 03:34 AM

Why not use LS400 callipers? You can get them to fit the FIGS kit. You will need spacers for standard wheels though.

I still think if you are going to upgrade the brakes you are better off just buying a set of after market 6 or 8 pots. It's a bit more money, but it's money well spent.