6G Celicas Forums

I was doing a reserch and apparently 4runner brakes with 4 pistons (non sport) version fits on a gt front rotors, And the sport version fits gt4 rotors. I think the brakes have to come off from a 95-02 3rd gen 4runners and will bolt on perfectly with no modifications.
Now my question is if they fit proportional valve needs to be modified? Becsuse it will be pusshing 4 pistons instead of 1.
If anyone has more info about this please post it here.

This post has been edited by diegohiga: Sep 25, 2011 - 1:20 PM

First question to you is, why upgrade to those calipers?

Swaping to 3s and need something to stop faster.

This post has been edited by diegohiga: Sep 25, 2011 - 2:27 PM

How do you know that you have exhausted your current brake set up and need to go bigger?

7afe and 5sfe= 1piston brake. 3sgte= 4 piston brake from factory. Im installing a 3s and i dont want a weak 1 piston brake system

If you can get a good price on the calipers go for it.

This post has been edited by BonzaiCelica: Sep 26, 2011 - 1:22 PM

bonzai, idk what you're talking about? how could braking upgrades be overkill? if it stops you sooner whats the difference? isn't that a point of performance?

I'm with diegohiga on this one! -like the upgrade, how about some pictures!

X2! no such thing as overkill if you want t stop faster.

brakes will fit, no questions about that

my question is, are you willing to try ? meaning, actually install and get them to work, you need to take some basic measurements and find a disc that will suit this new caliper, I don't think stock GT disc will be big enough for these calipers, 4runner comes stock with 16 inches wheels, and 17 inches on the sport version. which would point to the disc being the biggest they can fit behind the wheel.

it shouldn't be any harder than GT4 brakes and for a fraction of the cost, and the best part the amount of piston and most likely around the same diameter of disc.
it's definitely worth a shot, we just need someone to bite the bullet and try it, I mentioned this upgrades over a year ago but I already have Gt4 brakes so I wont be the one to try it.

I am more than willing to give it a try, just need some help finding the right size rotors.
From the research I've done they should be...
~318mm in diameter (perhaps a little more or less?)
~28mm in thickness (+/- ?)
-55mm center bore
and a 5x100 lug pattern (obviously..)

someone please take a second to let me know if those seem correct and I will find a solution.

This post has been edited by cjh4l22: Sep 26, 2011 - 2:17 AM

you are missing the most important part of the disc

offset, the offset is critical, too deep and it'll rub against your ball joint during cornering, not deep enough and it wont line up with the caliper, which you can solve by shaving some from the caliper mounting points to line it up, but go too far and you'll have a problem fitting wheels unless you go with some weird offset like in the 20s lol.

you need to get a set of calipers, bolt them down using stock disc, then take measurements of how far off from the stock disc the caliper's center line is in relation to the center of the disc. that way you'll know what's the " ideal " offset you'll need on the disc, if that number is 57 mm or higher, you'll need to shave off material from the bracket to bring that number down to avoid contact with the ball joint. if it's less than 57 mm, you are golden, all you need to do is find the right disc.

" hint "
there is an Audi disc very close to those specs you posted, but can't remember the offset on it.

dude dont fall on the negativity some members have on this site.

I found my 2 piston set up after looking a lot.

Why do you want to upgrade, just say for the hell of it and because i have the money. Thats my answer to everything now. That makes more sense now a days than a technical explanation.

Are u going to track it, who cares, you may just want to swao the brakes so that after yo take a piss on them, lol, well then just do it...

I have the trd calipers i bought and soon to install them, i bought new oem gt4 rotors from a source on ebay.

http://www.ebay.co.uk/sch/tigerlily2712/m....sid=p4340.l2562

he sold them to me. but i dont think he has any at this time....

Didn't we resolve some time ago that 7th gen brakes fit?
(and they offer BBKs for 7th gens)

I think I've found some rotors that are close. They are from a Seat Leon Cupra R
continuing research. possibly buying calipers this week for testing.

if you get this all installed, i'm curious to findout if you're going to be replacing your proportional valve with an adjustable one..

I want to do this, but I need somewhere where I can safely tune it, unless we can tune this to maximise the usage of front and rear brakes / tires, is a useless mod and is not something you want to street tune.

i'd be glad to figure out the proper proportioning bias (in terms of fluid pressure ratio from front vs rear) but would need to know some specs on the upgraded brake system & current brake system. would need things like the number of pistons per caliper, diameter of pistons, center to center distance from hub to pistons, etc.

I can get all those specs, but still I would like a " safe " environment when to do the real life test of the theoretical numbers.

I will post the numbers on my GT4 brake thread so they are not confused with the numbers for the 4runner brakes.

Sounds good so far. Im trying to get the calipers too. As soon i get then ill start to measure everything.

This is so full of wrong, I don't know where to start....

lets see...

a GT4 has 4 pot aluminum calipers... a car that weighs 1000 lbs more with drastically different rear brakes, weight balance, vehicle dynamic, et all... 10:1 those calipers are either part of the homogilation rules of rally at the time or a very shiny touch to a very expensive car...

This makes perfect sense to swap into your econo box with extra HP

What happens the first time you you slam on your brakes in a turn in the rain and you go ass first into a guard rail because your rear lifted and you lost traction? Or what happens when you try to stop because some jack ass stopped in front of you, and the nose of your car dives under his bumper? What about that master cylinder? Is it the same? What about your rear discs and calipers? Are they going to corrode and seize because they hardly actuate?

No one on this forum wants to have a serious discussion about brakes, no one talks about upgrading to SS brake lines, bleeding the system correctly, pad and rotor combination, intelligent bias adjustment discussion - et all. Now if you want to have the discussion that the single pot calipers are twisting under load and creating uneven pad wear, something I am starting to deal with, then we can have a caliper upgrade discussion. But I'd be willing to bet that the GT calipers would perform better than you expect with the extra HP after some minor massaging and high quality pads and rotors... after all late model ST165s and ST185s also were sold with single pot calipers.

You want to be a baller and drop 4 pots on the front of your car and stop fast in straight line, be my guest. But don't call it a brake upgrade.

This post has been edited by qatar11: Sep 26, 2011 - 10:36 PM