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VtecKickedInYo
10-04-2011, 07:35 PM
Hey i recently bought my civic few weeks back and i been having this brake grinding noise coming from the front (i assume) so i went to the machanic and got the front rotors machined and changed the brake pads but its still making the grind noise.

I noticed my rear brakes is the old type drum brakes and the noise mite be coming from there (i think)

should i be upgrading the rear ones to disk rotors??

i need help. thanks

trism
10-04-2011, 07:41 PM
no, you dont need to upgrade, that would be a waste of time and money

take it back to the mechanic, they didnt fix the problem, they should find it, and fix it for free.

does it happen all the time, or only when you hit the brakes?

you may need to replace the shoes in the drums

na-118
10-04-2011, 08:43 PM
jack the front of the vehicle up and rotate tyres by hand,, and see, listen, if noise is still there could be something simple like backing plate a little bent

VtecKickedInYo
13-04-2011, 01:50 PM
no, you dont need to upgrade, that would be a waste of time and money

take it back to the mechanic, they didnt fix the problem, they should find it, and fix it for free.

does it happen all the time, or only when you hit the brakes?

you may need to replace the shoes in the drums

It only happens when i hit the brakes...the harder i brake, the more louder the grinding noise is. I may need to repair the rear drum brakes thanks for the help

dougie_504
13-04-2011, 04:34 PM
If it were me I'd put disc brakes on the rear anyway

trism
13-04-2011, 06:29 PM
not necessary.

ive been through this before


I dunno why everyone is going on about how shit drums are, how they should be illegal, ****ing do some research.

drums actually have more stopping power. the surface area is a LOT more than discs. more surface area means more friction and better stopping.



They arent maintenance free, maybe you need to change the wheel cylinders and put new shoes on. Youd be amazed at the difference.



How can you feel the back not stopping? your car is all one piece, its not articulated in the middle, you wouldnt be able to tell. As for the fronts doing all the work, well this is what ahppens anyways. Factory brake bias isnt 50/50. Notice how the car pitches forwards under braking? I it was 50/50 then the rears would lock up everytime you stomped on the brakes. Its closer to around 70/30.

But Im assuming youre talking about doing a bit of spirited driving, getting on and off the brakes a fair bit, and this brings me to my next point.

Drums they are bad at heat dissipation, so no good for track, or spirited driving. Big solid bits of metal that absorb all the heat of braking, then have a hard time releasing it. This would be why your brakes are feeling shit. Its called brake fade.



Youre talking out of your arse here. Read what i said up there about brake bias, and the power of drums.



another great example of not knowing what youre talking about. Drums have great stopping power, but are susceptible to fade with repeated stops. I doubt youd be doing this in a base model Fiesta.




Yep, a balance of about 70/30. And adjustable too, so they can move it to the front as the fuel load burns off and the car gets lighter in the rear.

But its also again, the heat dissipation issue.



http://pic.phyrefile.com/n/na/narf/2010/06/14/facepalm.jpg

trism
13-04-2011, 06:33 PM
They only make the noise when you brake, so it implies an issue with the braking surfaces.

youve already had the front done, this narrows it down to the back.

you probably just need brake shoes, and maybe have the drum machined.

Lukey
15-04-2011, 12:55 AM
emery tape y0

mao
16-04-2011, 08:43 PM
Trism is on the ball here. Get the rears checked, assuming that they actually chged the pads and machined the front discs.