NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   2nd Generation Specific (https://www.nopistons.com/2nd-generation-specific-17/)
-   -   Scrapping Noise (https://www.nopistons.com/2nd-generation-specific-17/scrapping-noise-18813/)

avoid 06-11-2003 08:49 AM

I had my left rear caliper replaced by the dealer ship they told me my pads were real low and now I have this scrapping noise from that caliper is that my break pad or something else?? It used to only do it when I pushed the breaks but now it happens when I turn and start off to hard what could this be??



p.s. I waiting 4 my order to come from corksport pads and s/s lines

Seppuku 06-11-2003 10:27 AM

if your pad is gone and it went into the rotor youll need to replace them to. Look at your rotor if there is any cuts or groves in them theyll have to be replaced.

Nemesis 06-11-2003 12:57 PM

You might be able to have them turned if they have been scared. Like $10 each at PepBoys or your local auto center. Only if it's very deep or if your rotors have been turned many previous times should you have to replace them.

Baldy 06-11-2003 01:41 PM

can they turn them without removing them from the car?

Seppuku 06-11-2003 02:43 PM


Originally Posted by Nemesis' date='Jun 11 2003, 01:57 PM
You might be able to have them turned if they have been scared. Like $10 each at PepBoys or your local auto center. Only if it's very deep or if your rotors have been turned many previous times should you have to replace them.

I dont have rotors turned anymore last time i did the people messed them up and they needed to be replaced anyway.

wanta be boosted 06-11-2003 03:32 PM


can they turn them without removing them from the car?




Yes https://www.nopistons.com/forums/pub...IR#>/bigok.gif

Baldy 06-11-2003 04:00 PM


Originally Posted by wanta be boosted' date='Jun 11 2003, 04:32 PM

can they turn them without removing them from the car?




Yes https://www.nopistons.com/forums/pub...IR#>/bigok.gif

sweet, I think I might do that.

rmaiersg 06-11-2003 04:12 PM

I didn't think they could turn the rotors on the car? My friend's minivan had that problem too. It was b/c the pads were worn the the steel.

wanta be boosted 06-11-2003 04:45 PM

They turned them on my mom's Honda, and it is usually better to turn them on the car, because it will keep them true to the car, and not true to the machine. https://www.nopistons.com/forums/pub...1047683473.gif

Rob x-7 06-11-2003 07:00 PM


Originally Posted by Baldy' date='Jun 11 2003, 02:41 PM
can they turn them without removing them from the car?

its a very expensive machine that few shops have, its REALLY expensive compared to a table lathe.

wanta be boosted 06-11-2003 08:20 PM

A dealerships work shop should have one, and if they don't I'm sure someone local will.

Rob x-7 06-11-2003 08:27 PM

it takes like 10 minutes to take the front rotors off

wanta be boosted 06-11-2003 08:54 PM

Humm, I have never really taken the time to look and see how they are heald on, but seeing as how the back has half shafts, I think you would have to take the half shafts out to get the rotor off. Or do you???



Well I am not sure, but I know we were going to take my moms rotors off of her honda on the front and put new ones on, and to get the rotor off you had to take the tranaxle out.



OK I just looked at a picture of my front rotor, and it will come off easy. All you would have to do is pull the caliper, pop the grease cap off, pull a cotter pin ou, and back the nut that holds the bearing in off. No problem there, but it might be a pain in the ass if it is the rear.



Still at any rate if you take it off and have it turned and it is warped it will be true to the machine, and if you have it turned on the car it will be true to the car.

Baldy 06-12-2003 07:25 AM

yeah, the front rotors were simple to remove, just that back ones were a pain:

https://www.nopistons.com/forums/upl...1053448905.jpg

Rob x-7 06-12-2003 07:06 PM

you dont have to take the axles out to take the rotors off.





You will need a good impact screwdriver to get the screws off though.

its a pain in the ass.



Those on the car brake lathes arent so the rotors are true to

the car, its so they dont have to take the rotors off cars that are a pain

in the ass to take the rotors off of, ESPECIALLY 4x4 vehicles.

Apex13B 06-12-2003 07:32 PM


Originally Posted by Baldy' date='Jun 11 2003, 01:41 PM
can they turn them without removing them from the car?

good brand new, very sharp file. i do it all the time

teknics 06-12-2003 07:55 PM

the rear rotors and front rotors are held on by two phillips head screws.



get a big screw driver, and an impact gun. got a socket that fits the end of the screwdriver, and hammer away. it works rather well.



kevin.

TheCamel 06-12-2003 08:46 PM

avoid, you might want to take a look at the rotor that is making noise. Since you had a caliper replaced it is highly possible that the shop installed the pad backwards. Or they bent the squealer on the pad to make it have that sound. The Squealer is designed for people that do not check their brakes that often, it is a metal tab on the corner of the brake pad that is designed to contact the rotor and squeal when the pad is getting close to worn out. You mention it only made noise when you hit the brakes before and now after getting it back it is doing it all the time...this worries me. If it is doing it now they may not have put the system back together right. Or like I said they bent the squealer to make the noise to convince you that the brakes are bad.



The biggest question in my mind is why didn't you replace the brake pads when you had the caliper replaced in the first place?



I do not suggest you drive the car too much longer until this is rectifued though, if the pad is on backwards, or your pads are worn down that bad you don't have much time before the full metal to metal contact of the pad and the rotor decide to ruin the rotor beyond turning.



A little preventive maintenance now saves a lot of major maintenance later.


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