assman20a

i was driving down a back road on the way home when i was going around i blind corner when i saw a biker (spandex style) in the middle of the road with a car coming the other direction,all i could do was stomp the brakes. both fronts locked up.created a nice flat spot on my tires.

well geting on with it my brakes lock up vary esily now (30mph semi strong braking) i have no idea whats wrong. any pointers would be apreciated

Rxmfn7

iTrader: (4)

Your tires suck...

assman20a

i have 50%tred falken ziex 205/60R15s on it ther good tires

P.S. i was also doing about 70mph at the time

Barwick

check make sure the pads front and rear are the same compound pads. Racers use pads instead of proportioning valves to adjust brake bias and have the fronts lock up first, and then adjust it more precisely with the proportioning valve if needed.

PTRacer

Hi, I'm new to the forums. and i don't know much about FC's (i hope i can buy on soon).

If your car has ABS try to check the fuse. During thar hard brake at 70mph it is possible that it "burned". I don't know about the FC but in some cars the fuse also controls de front/rear brake distribuition, that can be it.
The tyres lock because there is no ABS, and now the front locks so easely because the brake distribuition is all messed up.

Hope it helps

Sorry for the bad english...

1987RX7guy

iTrader: (3)

Dood I locked my tires doing somewhere in the neighborhood of 85-95mph. Its just your lead food being used for the brakes lol. I'd say get some new pads/resurface your discs.

RotaryWeaponSE7EN

iTrader: (6)

Check the pistons in the calipers too. My back one locks up on its own.

beefhole

iTrader: (29)

Based on your sig it looks like you have a non-turbo car. I could be mistaken but didn't only the turbos have ABS?

Pinfield357

my turbo has no ABS

RotaryWeaponSE7EN

iTrader: (6)

No the GXL's also came w/ ABS. I believe its only on the rear brakes though.

JerryLH3

iTrader: (11)

Not quite. ABS was optional on GXLs, but it would have come on all four wheels.

NZConvertible

If your brakes are strong enough to overcome the grip of the tires and lock the wheels, then you obviously don't have a brake problem. You have a tire problem.

Barwick

or a brake BALANCE problem.

spike10h

A. find the threshold

B. don't brake so damn hard

assman20a

i was going to hit the biker dude. what else could i do. besides i can esily do 65-80 on that windy *** road

as for the abs. i have none. and yes my pads on front and rear are diferent, not shure what kind

what is the proportioning valve

95R2-89TII Ground Zero

May have heated the rotors and glazed the pads. That would cause it to stick under heavy braking. Get new pads, and resurface the rotors.

aznpoopy

that's probably your problem. how the hell do you not know hwat kind of pads you have?

quick lesson on brake bias : front do more work then rears. so if you have same force on all 4 corners, the rears will lock up first, causing instability. brake bias can be adjusted by (stock) the master cylinder you use and the type of pads you use. fudging with those without knowing what you are dong can cause instability.

after adding aftermarket brakes to a car (which are usually larger etc...) you need to adjust the bias. one of the things that can help is a adjustable bias controller, which can be adjusted so that proper bias is maintained.

for instance if you ran really aggressive pads on the rears and really shitty ones on the front, guess what... your braking will suck. (which is my guess as to what happened)

assman20a

i know how brakes work man. also remember the fronts are locking up. besides the pads on the car wher the same ones on it when i bought the damm POS that has cuased me nouthing but truble .


hay anyone want a 90 GXL for $800 in san diego JK lol

assman20a

bump

SureShot

First - control your speed. (I'm working on this myself.)
**** happens - speed makes it worse.

If you can't see beyond your braking distance, you're going too fast, and sooner or later you WILL crash.
Going up to the limits of the car is for closed courses with flagmen.

aznpoopy

in that case:

70mph + on twisties with blind curves
came up suddenly on a slow moving biker
slammed on brakes, fronts locked up

and you ask whats wrong with the car?

answer = the driver

driver slower when you don't know whats in front of you. physics dictates there is a limit to your car's stopping ability.

NZConvertible

No, since it's the front brakes that are locking, it's not a brake balance problem. It's purely the driver braking too hard for the tires. Better (grippier) tires will allow harder braking.