Brembo Equipped FPV Vehicles - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

Aussie Pete · 05-29-2003, 18:40

Guys, for those of you with Brembos on your FPV can you try this for me please:

Drive for a period on a road with bends and sharpish bumps (preferable together) without using the brake pedal. Preferably you would create some reasonable side load Gs while doing so. After the extended period slowly press the brake pedal.

Is the pedal at the standard height or does the pedal drop away before you get positive feel and braking?

If the pedal dropped away did you get positive braking and pedal feel after pumping the pedal one or two times?

Would appreciate your help in answering these questions at your earliest convenience.

flappist · 05-29-2003, 20:32

Done a bit over 4000 km in mine, mostly on highway at "100" km/h Never noticed what you describe.
The roads up here tend to be bumpy and bendy.
I will take more notice for you.

John McMaster · 05-29-2003, 21:07

AP
Sounds like brake pad knock back,same as the V8supercars get.

Fordy · 05-29-2003, 22:16

Quote:

Originally posted by John McMaster
AP
Sounds like brake pad knock back,same as the V8supercars get.

Could you elaborate more on that please John.

Just interested.

Aussie Pete · 05-29-2003, 23:32

Quote:

Originally posted by Fordy
Could you elaborate more on that please John.

Just interested.

What he's referring to is that on some brake systems at high temps or whatever the disc can run a little out of true. This has the effect of knocking the pads which in turn pushes the pistons back. What this does is on the first brake application you have to push the pedal all the way until the pads and pistons take up that slack. The pedal actually can require numerous pumps to come back to full effective braking levels.

And yes, I agree the symptoms sound like pad knock off but it may not be that simple.

Fordy · 05-29-2003, 23:37

Thanks!!!

BOSSGT · 05-30-2003, 01:59

Ive not had this problem with mine thus far. is the brake pedal shuddering at all when the discs have been pushed a lot? I know that this is very very unlikely but just make sure you dont have excess wheel bearing play. if not than it may be as John has suggested above, but ive pushed mine a bit and have had no unordinary problems.

Elmer Fudd

Noboss · 05-30-2003, 15:30

Have a look at the wheel bearings probley need adjusting

rod · 06-03-2003, 05:57

greetings all
i dont belive that it is a wheel bearing problem, i belive that it is caused by excessive side load & the disc is pushing the pad ( piston ) back in the cylinder, you will notice that a lot of the touring car drivers pump the brake pedal down conrod straight @ bathurst & several other tracks ( bathurst is most noticeable) to eleviate this problem &to make sure that they have brakes at the bottom

i have not noticed this in my ute but i have not driven it all that hard yet !

regards
rod

Aussie Pete · 06-03-2003, 15:27

ROD and others:
yes pad knock off is unfortunately unavoidable when brakes heat up as much as they do on race cars. This is because of the issue of thermal gradients in the brake hardware - it always finds a way to distort.

However, I'm talking brakes at temps and conditions like driving to the shops for milk - i.e. 50 zones and the like.

I have complete faith that the Ford people will sort out the issue as posts on here confirm that what I am seeing is a one off thing.