4runner brakes on gt celicas, big upgrate and not expensive! Options

[diegohiga]

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

[Culpable04]

Bonzai, I see the info you posted and you are correct on the difference there, but since I have a USDM celica and was installing GT4 parts those are the 2 I compared and found to be the same.


now on to proportioning valve.

the GT4 proportioning valve is a temporary safety measure on MY setup since I'll have rear gt4 system as well, on your front upgraded - stock rear setup it wont be any better than your stock one, an adjustable valve will be needed to fine tune the system.

a proportioning valve doesn't really work controlling the pressure in proportions as the name would imply, what it does it, allows the brake pressure to be at 50 / 50 front and rear on mild loads ) this is good at low loads ) but then on high loads it caps the rear brakes pressure to a set max, thus avoiding the rear tires to lock up before the front.

on a stock car, when you brake there is a point where you will lock your front tires and if you keep applying more pressure eventually your rears will lock as well. to fine tuning your brakes you want to bring this as close as possible but keeping your front locking first ALWAYS, this will maximize the use of all 4 tires / brake pads more evenly and more consistently also improve your braking distance as you will have the traction of 4 tires trying to stop a car instead of your front ones doing most of the work.



some mild read !!!!