Honda Car Forum

motsco_ <motsco_@interbaun.com> wrote in news:12rlcl4fcn0l60
@corp.supernews.com:

> weasel wrote:
>> I put cheap rotors on my Accord a year ago ...and they are causing
>> pedal pulsation.Warped..
>> But I’ll wait for a bit, because it’s a real pain to change them..
>
> ==========================
>
> There was a very good discussion last fall (with links to various sites)
> that dispelled the 'warped' theory (for me). Crap from the pads sticks
> to the rotor making it glazed, which makes it grabby. Cure wasn't easy,
> but possible.
>
> Best explanation I've seen yet.
>
> Anybody have that link ? ? ??
>


See this excellent and comprehensive writeup:
http://www.babcox.com/editorial/bf/bf100326.htm


--
Tegger

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

Michael Pardee wrote:
> "jim beam" <spamvortex@bad.example.net> wrote in message
> news:u72dnT-bf_biKyfYnZ2dnUVZ_qDinZ2d@speakeasy.net...
>> motsco_ wrote:
>>> There was a very good discussion last fall (with links to various sites)
>>> that dispelled the 'warped' theory (for me). Crap from the pads sticks to
>>> the rotor making it glazed, which makes it grabby. Cure wasn't easy, but
>>> possible.
>> that can happen, but it's not the sole cause.
>>
>
> That's my take on pedal pulsations: there are probably multiple defects that
> have the same symptoms... or at least close enough to the same that we don't
> notice. My brakes worked a lot better after I started using a torque wrench
> on the lug nuts.
>

and that's the #1 solution for a honda! but the antiseize thing
definitely helps too. i've proven this to myself several times now - i
had tires rebalanced on my civic and aside from crossing threads on the
lug nuts, the monkeys that put the wheels back on with an impact driver
created instantly "warped" disks. and i mean instantly. driving in,
they were perfect, driving out, you thought the car was going to fall
apart when you hit the brakes at speed. unfortunately, i didn't have
time to attend to it right away, so when i did get the chance to
re-torque, despite a couple of attempts with the torque wrench, it was
much better, but not perfect. i wondered if the usage in that condition
had permanently ruined them. finally, i scraped everything off and
smeared a little antiseize on the hub face where the wheel goes, and
suddenly, those "warped" disks were perfectly smooth again.

i think some people are skeptical about how much torque affects
"warping" on hondas [tegger], but if you come from the frozen north and
habitually use antiseize anyway, i think you won't notice it as much.
likewise when you fit new disks, they're coated in a thin layer of
anti-rust which is also a lubricant, and they seat properly. it's only
when the hub faces lose the lubricant and corrode a little that the
problem is so bad. here in california, while it's great our cars don't
rust like they do up north, we consequently don't use antiseize very
often and this brake thing seems to be a real problem. from now on,
it's /always/ going to be on my hubs - and i use a torque wrench.

Rear brakes that are not working properly will cause the front rotors to
warp in a hurry. Had the rotors replaced/resurfaced 4 times, problem
kept coming back every 1500 miles. The cause was the rear brakes were not
working at all.
"kp23" <none@000.com> wrote in message
news:966619_07eea04c965a3b5ffd2dd5035319f90c@autob oardz.com...
>I drive a 1991 Honda Accord LX and i have had to have the rotors
> replaced or turned almost every year since I've owned the car (5
> years). Is this normal or is something else causing this? It is hard
> to believe that my rotors are warped this much. The vibrating now is
> usually while driving and then worsens when i brake.
>
> --
> Posted at author's request, using http://www.AutoBoardz.com interface
> Articles individually verified to usenet standards. Visit URL to contact
> author/report abuse
> Thread archive:
> http://www.AutoBoardz.com/brake-prob...ict204004.html
>

afd wrote:
> Rear brakes that are not working properly will cause the front rotors to
> warp in a hurry. Had the rotors replaced/resurfaced 4 times, problem
> kept coming back every 1500 miles. The cause was the rear brakes were not
> working at all.

whoever told you that was blowing smoke. rear brakes hardly work at all
under hard braking - that's what the proportioning valve is for.
potting around town won't warp your disks.


> "kp23" <none@000.com> wrote in message
> news:966619_07eea04c965a3b5ffd2dd5035319f90c@autob oardz.com...
>> I drive a 1991 Honda Accord LX and i have had to have the rotors
>> replaced or turned almost every year since I've owned the car (5
>> years). Is this normal or is something else causing this? It is hard
>> to believe that my rotors are warped this much. The vibrating now is
>> usually while driving and then worsens when i brake.
>>
>> --
>> Posted at author's request, using http://www.AutoBoardz.com interface
>> Articles individually verified to usenet standards. Visit URL to contact
>> author/report abuse
>> Thread archive:
>> http://www.AutoBoardz.com/brake-prob...ict204004.html
>>
>
>

Fact remains, 0 rear brakes means the front do 100%. that additional
25-40% extra heat on the front rotors caused massive overheating. Btdt got
the tea shirt.

Might not be common, but in my case it was the cause.

Wheel bolt torque has nothing to do with brake warping either, Drove a car
for almost 2 years with 3 out of 4 lug nuts installed (didnt know it was
missing) never had a brake problem on that car. Rust underneath the
rotor/hub flange is a different story however, very frequent problem in the
NW.


"jim beam" <spamvortex@bad.example.net> wrote in message
news:-Iqdnccd1JAjSibYnZ2dnUVZ_hninZ2d@speakeasy.net...
> afd wrote:
>> Rear brakes that are not working properly will cause the front rotors to
>> warp in a hurry. Had the rotors replaced/resurfaced 4 times, problem
>> kept coming back every 1500 miles. The cause was the rear brakes were
>> not working at all.
>
> whoever told you that was blowing smoke. rear brakes hardly work at all
> under hard braking - that's what the proportioning valve is for. potting
> around town won't warp your disks.
>
>
>> "kp23" <none@000.com> wrote in message
>> news:966619_07eea04c965a3b5ffd2dd5035319f90c@autob oardz.com...
>>> I drive a 1991 Honda Accord LX and i have had to have the rotors
>>> replaced or turned almost every year since I've owned the car (5
>>> years). Is this normal or is something else causing this? It is hard
>>> to believe that my rotors are warped this much. The vibrating now is
>>> usually while driving and then worsens when i brake.
>>>
>>> --
>>> Posted at author's request, using http://www.AutoBoardz.com interface
>>> Articles individually verified to usenet standards. Visit URL to contact
>>> author/report abuse
>>> Thread archive:
>>> http://www.AutoBoardz.com/brake-prob...ict204004.html
>>>
>>

l390f wrote:
> Fact remains, 0 rear brakes means the front do 100%. that additional
> 25-40% extra heat on the front rotors caused massive overheating.

that may be what you believe, but that belief is not based on sufficient
information.

> Btdt got
> the tea shirt.
>
> Might not be common, but in my case it was the cause.

with respect, the temperature reached by disks, even in extreme use, is
nowhere /near/ that necessary to actually warp. you can race an integra
on standard 10.25" disks no problem, and those things get HOT.

>
> Wheel bolt torque has nothing to do with brake warping either,

not true. the hub on hondas is very lightweight - it elastically
distorts if torque is not even.

> Drove a car
> for almost 2 years with 3 out of 4 lug nuts installed (didnt know it was
> missing)

2 years without inspection??? that's truly bizarre.

> never had a brake problem on that car. Rust underneath the
> rotor/hub flange is a different story however, very frequent problem in the
> NW.
>
>
> "jim beam" <spamvortex@bad.example.net> wrote in message
> news:-Iqdnccd1JAjSibYnZ2dnUVZ_hninZ2d@speakeasy.net...
>> afd wrote:
>>> Rear brakes that are not working properly will cause the front rotors to
>>> warp in a hurry. Had the rotors replaced/resurfaced 4 times, problem
>>> kept coming back every 1500 miles. The cause was the rear brakes were
>>> not working at all.
>> whoever told you that was blowing smoke. rear brakes hardly work at all
>> under hard braking - that's what the proportioning valve is for. potting
>> around town won't warp your disks.
>>
>>
>>> "kp23" <none@000.com> wrote in message
>>> news:966619_07eea04c965a3b5ffd2dd5035319f90c@autob oardz.com...
>>>> I drive a 1991 Honda Accord LX and i have had to have the rotors
>>>> replaced or turned almost every year since I've owned the car (5
>>>> years). Is this normal or is something else causing this? It is hard
>>>> to believe that my rotors are warped this much. The vibrating now is
>>>> usually while driving and then worsens when i brake.
>>>>
>>>> --
>>>> Posted at author's request, using http://www.AutoBoardz.com interface
>>>> Articles individually verified to usenet standards. Visit URL to contact
>>>> author/report abuse
>>>> Thread archive:
>>>> http://www.AutoBoardz.com/brake-prob...ict204004.html
>>>>
>

It could be that Im describing Warped incorrectly. What I should be saying
is that the uneven brake pedal pulsing went away when the rear brakes were
repaired. IE the adjusters for the rear drums were r&r such that the rear
shoes starting to work. It may have been "warping" the rotors in the front
or there was uneven pad material transfer to the rotors.
BTW the article from http://www.babcox.com/editorial/bf/bf100326.htm
helped me change my terminology a bit.




"jim beam" <spamvortex@bad.example.net> wrote in message
news:KoadnVHSe85zglvYnZ2dnUVZ_sGqnZ2d@speakeasy.ne t...
> l390f wrote:
>> Fact remains, 0 rear brakes means the front do 100%. that additional
>> 25-40% extra heat on the front rotors caused massive overheating.
>
> that may be what you believe, but that belief is not based on sufficient
> information.
>
>> Btdt got the tea shirt.
>>
>> Might not be common, but in my case it was the cause.
>
> with respect, the temperature reached by disks, even in extreme use, is
> nowhere /near/ that necessary to actually warp. you can race an integra
> on standard 10.25" disks no problem, and those things get HOT.
>
>>
>> Wheel bolt torque has nothing to do with brake warping either,
>
> not true. the hub on hondas is very lightweight - it elastically distorts
> if torque is not even.
>
>> Drove a car for almost 2 years with 3 out of 4 lug nuts installed
>> (didnt know it was missing)
>
> 2 years without inspection??? that's truly bizarre.
>
>> never had a brake problem on that car. Rust underneath the rotor/hub
>> flange is a different story however, very frequent problem in the NW.
>>
>>
>> "jim beam" <spamvortex@bad.example.net> wrote in message
>> news:-Iqdnccd1JAjSibYnZ2dnUVZ_hninZ2d@speakeasy.net...
>>> afd wrote:
>>>> Rear brakes that are not working properly will cause the front rotors
>>>> to warp in a hurry. Had the rotors replaced/resurfaced 4 times,
>>>> problem kept coming back every 1500 miles. The cause was the rear
>>>> brakes were not working at all.
>>> whoever told you that was blowing smoke. rear brakes hardly work at all
>>> under hard braking - that's what the proportioning valve is for. potting
>>> around town won't warp your disks.
>>>
>>>
>>>> "kp23" <none@000.com> wrote in message
>>>> news:966619_07eea04c965a3b5ffd2dd5035319f90c@autob oardz.com...
>>>>> I drive a 1991 Honda Accord LX and i have had to have the rotors
>>>>> replaced or turned almost every year since I've owned the car (5
>>>>> years). Is this normal or is something else causing this? It is hard
>>>>> to believe that my rotors are warped this much. The vibrating now is
>>>>> usually while driving and then worsens when i brake.
>>>>>
>>>>> --
>>>>> Posted at author's request, using http://www.AutoBoardz.com interface
>>>>> Articles individually verified to usenet standards. Visit URL to
>>>>> contact author/report abuse
>>>>> Thread archive:
>>>>> http://www.AutoBoardz.com/brake-prob...ict204004.html
>>>>>
>>