Gq Brake bias

[Bloodyaussie]

I have had an issue with my brakes and has gone on for some time now.. it seems under heavy braking my rear brakes work more than the fronts and yesterday with a heavy load in the trailer I felt the brakes were not doing there job.

I have a brake bias bracket fitted and I measured it from eye to eye and it measured at 3 and a half inches and my car sits on a 4 inch lift?

Has anyone had this issue or does anyone know how to sort this.. I run good quality pads and discs.

The rear of my car sits higher than the front since fitting a diesel...

[BillsGU]

I have just had a similar problem with my GU. The answer ended up being that the LPV was faulty. If it is not bled occasionally it accumulates moisture and corrodes the piston - which then sticks or whatever. My brakes were rubbish and are fine after the valve was replaced.

[Bloodyaussie]

Thanks for that mate will look into it. .

I just went out to take a pic just incase iy was something stupid...lol

Plus some can only cope with pictures.

1423193460233.jpg

[happygu]

I have had an issue with my brakes and has gone on for some time now.. it seems under heavy braking my rear brakes work more than the fronts and yesterday with a heavy load in the trailer I felt the brakes were not doing there job.

I have a brake bias bracket fitted and I measured it from eye to eye and it measured at 3 and a half inches and my car sits on a 4 inch lift?

Has anyone had this issue or does anyone know how to sort this.. I run good quality pads and discs.

The rear of my car sits higher than the front since fitting a diesel...

BA,

It won't be the height of the extension bracket, as they don't even put one on for a two inch lift ..... yours is only 1/2 an inch from standard ....

The only thing to look at would be the adjustment side of things - to set it up a little better for you.

When you load up the back, it drops, releasing pressure off the spring, and giving you more rear brake power.

You can adjust it so there is more pressure on the spring, giving you less rear brakes.

Mic

[doka404]

One more thing to check if its not the LPV....A while ago i rebuilt my GQ brakes (was actually upgrading to the twin spot EFI Fronts) and before I started the job everything was pretty well balanced.
I rebuilt the rears first while waiting for parts for the fronts, and after that, the rears over powered the fronts. Once the fronts got sorted everything went back into balance..

Maybe the front slide pins have siezed up a bit and the rears are actually working better than the fronts..or something like that..just another thought..

[billyj]

get your front calipers reco'd my patrol was doing similar and while they looked to be working( would stop a spinning wheel while jacked up) they were actually siezed and doing stuff all. other thought is maybe some air in the front lines, the twin piston fronts are a complete bitch to get bled properly

[Stropp]

Yes it pays to pull the fronts off and clean the pins and check that the calipers are actually working as I know when I got mine I had to install new pads and everything was seized up.

[Bloodyaussie]

The fronts were rebuilt not that long ago.

This has really only be noticeable after going to 4 inch lift.

I was looking at the valve at the back and the spring has tension on it with about 1cm already pushing on the piston.

Is there supposed to be any tension on it while it sits idle?

[BigRAWesty]

Could it be pure coincidence that the valve has seized and having the 4" lift has just made the braking feeling more noticeable?

[bigkevlittletruck]

When you raise a car you should adjust the brake bias length as well . Try disconnect tie it up like your loaded up and test brakes.