brakes warping tech theory

[dylan0451]

can anyone remember the site (i'm pretty sure it was posted here) which had in depth info about warping/pad material transfer, i think it was american?

i've finally got rid of those pap greenstuff pads for M1144 as the rears turned up in the post, along with replacement backing squeal thingies and all the clips and springs

instantly better braking, by a huge margin except i now have judder under braking from the front. hardly a biggie considering how cheap standard replacement discs are, but i was hoping the new pads might be able to remove the deposits and essentially fix themselves

and of course, nothing is ever simple - both front avo coilovers have blown up, leaving me with a pretty bouncy front end and shock fluid all over my wishbones. i'm wondering if having zero damping is also partly to blame for the juddering

[bluetone]

dylan0451 said:

and of course, nothing is ever simple - both front avo coilovers have blown up, leaving me with a pretty bouncy front end and shock fluid all over my wishbones. i'm wondering if having zero damping is also partly to blame for the juddering

This will not help and is likely a dangerous condition to drive your car in

[dylan0451]

bluetone said:

dylan0451 said:

and of course, nothing is ever simple - both front avo coilovers have blown up, leaving me with a pretty bouncy front end and shock fluid all over my wishbones. i'm wondering if having zero damping is also partly to blame for the juddering

This will not help and is likely a dangerous condition to drive your car in

i'd go as far as to say it's definatly more than likely a dangerous condition to drive my car in! it handles like ste and bobs about like a boat at sea, i intend on getting the units reconned by avo asap...

speaking of, does anyone know of anywhere else i could get my coilovers reconditioned in essex? avo turnaround is 5-10 days apparently which isn't so useful for a DD!

[Odie]

dylan0451 said:

instantly better braking, by a huge margin except i now have judder under braking from the front. hardly a biggie considering how cheap standard replacement discs are, but i was hoping the new pads might be able to remove the deposits and essentially fix themselves

and of course, nothing is ever simple - both front avo coilovers have blown up, leaving me with a pretty bouncy front end and shock fluid all over my wishbones. i'm wondering if having zero damping is also partly to blame for the juddering

Get new discs.. If they are juddering its likely the discs are warped (overheating yada yada) not crap on them. Make sure you put new pads in with the new discs, and also change your break fluid.

Get some new shockers, having no dampening is likely to kill you..

Its just stupid driving a car in that condition.

[MX-5 Lazza]

Try talking to Derek at Absolutely GAZ (Gazman on a lot of the forums).

[dylan0451]

Odie said:

Get new discs.. If they are juddering its likely the discs are warped (overheating yada yada) not crap on them. Make sure you put new pads in with the new discs, and also change your break fluid.

this is the whole thing though, i read it's the hardening under pad deposits that renders the discs useless - i seem to remember the deposits can be taken off with careful braking or something along those lines

i'm not entirely convinced spending another £160 on pads that have only covered 30 miles is necessary, nor that perfectly good fluid needs changing because of initial juddering

Odie said:

Get some new shockers, having no dampening is likely to kill you..

Its just stupid driving a car in that condition.

whoa there billy, i think possibly not having a clue you're missing dampers and driving like a spanner is indeed likely to kill you, however, it is possible to exercise restraint realising your car isn't working 100%!

[Odie]

dylan0451 said:

Odie said:

Get new discs.. If they are juddering its likely the discs are warped (overheating yada yada) not crap on them. Make sure you put new pads in with the new discs, and also change your break fluid.

this is the whole thing though, i read it's the hardening under pad deposits that renders the discs useless - i seem to remember the deposits can be taken off with careful braking or something along those lines

i'm not entirely convinced spending another £160 on pads that have only covered 30 miles is necessary, nor that perfectly good fluid needs changing because of initial juddering

Odie said:

Get some new shockers, having no dampening is likely to kill you..

Its just stupid driving a car in that condition.

whoa there billy, i think possibly not having a clue you're missing dampers and driving like a spanner is indeed likely to kill you, however, it is possible to exercise restraint realising your car isn't working 100%!

I think your attitude is highly irresponsible.

[dylan0451]

sorry if i come across that way, but that reply just came across a tad naive! it's all too easy to jump on the high horse and label anyone as dangerous and inconsiderate but it's hardly black and white

seeing as the springs are about twice as stiff as stock, i could pressure wash the dampers and probably pass an mot. then go on to tell my mates i'm a very safe person as my car's just passed an mot, and sell it on, and have the next owner say the same

seeing as this is a car enthusiasts site, it's quite likely that people don't come on here to brag about whats broken on their car, with no intention of fixing the issues. sorry if i come across as blunt.

MX-5 Lazza said:

Try talking to Derek at Absolutely GAZ (Gazman on a lot of the forums).

i think i might have asked him before - apparently gaz and avo use different rods and seals - i think avo use imperial sizing or something?!

i almost saw it as my way out to the gold pro's but after getting a quote at £30 a corner for rebuilding, i guess i couldn't really justify the expense!

[skinny]

did you do the recommended bed-in procedure for the mintex pads? mine were smoking after it - i can't imagine anything left stuck on the discs after that!!

[dylan0451]

i did end up on a vx220 forum while looking for running in instructions, i might be wrong but i'm pretty sure there were conflicting instructions as to how they should be run in, someone even posted latest instructions that stated that there was no running in procedure?! just light use initially i assume

[skinny]

the bedding in procedure is to do 4-5 stops from 30 down to zero, and then 4-5 from 70 down to 30, each as hard as you can (so find a long empty road). then try not to touch brakes again to cool them down and park it (and brake off!) for as long as possible - at least overnight.

[DocJock]

Here ya go Dylan http://www.stoptech.com/tech_info/wp_warped_braked...