motor

coombsie66 · 10-31-2004, 07:23 PM

To me danny it sounds just like extreme overheating of the pads. If the fluid boiled/overheated then you get a squishy pedal (going to teh floor in extreme circumstances) but if its pad overheating then you get a hard pedal. If the pads are heated to outside of thier operating range then their friction properties change considerably! Like with cold carbon metalic (race) pads untill they are fuckin hot they do bugger all!! In the same way if normal spec pads go over a certain temp tehy do bugger all!!!! Ive had it a couple times, but not quite to that extent.
I expect that afterwards teh brakes were not on 'top form' especially the next day, as when you heat em up this much they get 'glazed'. But a good average run with a few hard stops will de-glaze them pretty well.
If you totally overheated them, then they disintegrate!!! lol so take it easy danni, dont wanna see a KA Saxo combo any time soon!

gis · 10-31-2004, 08:07 PM

lol dont worry i aint planning on seein a KA and saxo combo myself anytime.i went on a road that i usually drive on last night,its a national speed limit so even at that speed its just the right ammoutn around the country lanes,but hey also requre a little braking for sum sharp turns etc etc.......but i found myself not bein able to do it,i got around the first 2-3 corners and i was scared to death of hittin that pedal and it happening again.although durin the day i did a few stops to test them myself and they worked fine.i guess i need to build the confidence up again thats all.

GMC 4 pot conversion goin on the next one thats for sure,lol

coombsie66 · 11-01-2004, 01:24 PM

Originally Posted by gis

lol dont worry i aint planning on seein a KA and saxo combo myself anytime.i went on a road that i usually drive on last night,its a national speed limit so even at that speed its just the right ammoutn around the country lanes,but hey also requre a little braking for sum sharp turns etc etc.......but i found myself not bein able to do it,i got around the first 2-3 corners and i was scared to death of hittin that pedal and it happening again.although durin the day i did a few stops to test them myself and they worked fine.i guess i need to build the confidence up again thats all.

GMC 4 pot conversion goin on the next one thats for sure,lol

LOL, yeah i always thought the saxo felt like it braked really well! I mean its well light and discs all round. Maybee you just need some mintex pads 1144's when your standards run out.

jon_s · 11-02-2004, 12:10 PM

Hummmmmmmmmmmm Brembo's!! Talking of brakes, you know that red golf I showed you (gis) he got the brakes from Seat when the price list was all wrong, and got a set of Brembo's for something like £400! :shock:

jon_s · 11-02-2004, 04:45 PM

LOL, I heard you went even cheaper than that!

FoxFour · 11-09-2004, 09:45 AM

One of the worse feelings in the world is not being able to trust your brakes to work properly. Have you been losing brake fluid? If you have, then that is not normal and you should check for the source of the leak. Also, I highly agree with flushing out the brake fluid. Regular Brake fluid is highly hydroscopic ( absorbs water) after a while the fluid gets so built up with water that the fluid loses it effectiveness and then you will have the water starting to settle in the lower portion of the brake system like the ABS module; for instance. That in itself could cause braking problems if the ABS module fails. Another thing, did you check your brake rotor thickness? Usually the minimum thickness is scribed on the rotor itself. Using a caliper gauge will determine if you need new ones. Get some good pads and if you decide to get the lines flushed, go ahead and get new brake hoses front and back.

gis · 11-10-2004, 09:36 PM

man i was gonna reply to this thread after a couple days when i tested the brakes good for a few days,then i forgot.lol

jon - yes i remember that red golf,if i remember i went all excited when you showed me as i loved it,and what a lucky guy for gettin a set of brembo's for that cheap.he got them from seat? that mean they are leon cupra R brakes?

foxfour - the ABS is workin fine,actually for the past week or so they aint been a problem.well they actually been sharper since we cleaned all the brake dust out and everything,guranteed if i get another saxo in the future,then bigger better brakes are goin on,lol

africanmojo · 11-10-2004, 10:10 PM

brakes have a temp that they are rated to if you go above that your brakes don't work as well as they should.i found this out because recently i had to get my brakes done because the mechanic that did my brakes last time put brakes that where not suited to my car so i was finding that the car wouldn't stop after a couple of times braking hard the peddle felt the same just the brakes don't work at all so sounds like you just overheated the brakes to me.

graywolf624 · 11-10-2004, 10:20 PM

brakes have a temp that they are rated to if you go above that your brakes don't work as well as they should.i found this out because recently i had to get my brakes done because the mechanic that did my brakes last time put brakes that where not suited to my car so i was finding that the car wouldn't stop after a couple of times braking hard the peddle felt the same just the brakes don't work at all so sounds like you just overheated the brakes to me.

You mean pads.

Theres two types of fadeing.. or over heating..
One is pad fade..where the pad overheats and glazes over.
The other is fluid fade.. which occurs when the brake fuid boils...
Both can happen suddenly.

The difference youll notice between the two.. is one the pedal will just go flat to the floor.
and the other youll still get pressure but it will be hard to push down(or perhaps squishy)..

africanmojo · 11-10-2004, 11:05 PM

^sorry meant to say brake pads

adamk24 · 11-11-2004, 07:29 AM

I think I Know what your problem could have been. But I need to Know a few things to properly Diagnose the problem. (I used to work in a brake shop

)

What kind of brakes does your car have? Front Disc, Rear drum?
What were the road conditions. Was it very wet outside?

Also, and this is important, so dont assume, When you had your brakes serviced, did they say they 'bled and serviced the brake fluid."? or did they actually flush it. 9/10 shops only 'service' brake fluid, rathan flushing the entire system. They might not have replaced your fluid as you think, they may have only topped it off and cleaned out the gunk at the caliper/drum.

Also, does your car use/leak brake fluid at all? Have you ever had to put more fluid in the resevoir?
And finally did you notice ANYTHING unusuall that might be helpfull right before it happend? Did the brake pedal go down any further than ushuall, did it feel more sqwishy that normal, did it feel strange in anyway before they decided to stop working?
If you could let me know, I bet I can tell you what your problem is. If not, I guess Im a failure in life

gis · 11-11-2004, 08:47 AM

from whats been said i think it was just brake fade after quite a bit of heavy braking. but anyway ill try and answer sum of the stuff you asked

the car has front and rear discs,i had been parked up when it had a bit of rain but the road had dried out a bit b4 i set off.im not sure what they did at the last serice to the brakes,was a bit ago now as its goin in for its next service in about 2-3 weeks time so i can ask then.
The brake pedal felt pretty much the same,pushed,felt pressure and i could feel the brakes tryin to grip but it wasnt happening.

adamk24 · 11-12-2004, 01:31 AM

Well that pretty much ruled out all the possibilities that I had in mind. It is very unlikely that the car would get snap brake fade, its ushally a progressive thing, but I guess its possible

graywolf624 · 11-12-2004, 11:36 AM

its ushally a progressive thing,

Actually it isn't usually a progressive thing from my own observations. On a race track at least it comes on suddenly (since youve hit the brakes the last go around really hard). On the street yeah.. But he wasnt driving like your supposed to on the street...
*shakes finger.. shame shame shame*

jon_s · 11-12-2004, 11:47 AM

Oooops, forgot about this thread...and yes, they are CR brakes