NB2 rear caliper rattle
#21
Elite Member
iTrader: (21)
Join Date: Jun 2007
Location: Rochester, NY
Posts: 6,593
Total Cats: 1,259
Yes. We need hard data. Get to it, Joe!
Well, to be honest, most designers are lazy. I'd say that goes for the ones in Japan as well. So it's a pretty good bet that the spacing of the pins is a nice round metric number. Ought to be able to get it pretty damn close with just a HF caliper.
I've thought about it. My concern is getting the spacing between the two bores just perfect, without having any sort of reference. Otherwise, I'll have binding calipers instead of loose calipers. I'm not assuming that the new, larger (worn-out) holes are perfectly concentric with the originals.
Well, to be honest, most designers are lazy. I'd say that goes for the ones in Japan as well. So it's a pretty good bet that the spacing of the pins is a nice round metric number. Ought to be able to get it pretty damn close with just a HF caliper.
#24
Boost Pope
Thread Starter
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,019
Total Cats: 6,587
Brake gurus: I seek your opinion.
Observe this product listing: https://www.gomiata.com/mazda-mx-5-m...-calipers.html
"These are brand NEW aftermarket brake calipers, for less money than OEM Mazda rebuilt calipers!"
It claims to fit '94-'01 cars (with '00-'01 being only the non-sport model.)
$90 each. I am MORE than willing to spend this level of money to make this problem go away.
The Mazda OEM Collision Parts guide says that non-sport '02-'04 models used the same caliper as '94-'01 cars. Though, oddly, it also states that what was considered to be the "right side" caliper in earlier years is used on both sides of the '01+ cars.
NA guide:
NB guide:
I just went down and inspected my car, and confirmed that the caliper is mounted on the front-side of the rotor on both right and left, and that the bleeder screw is at the top on both sides, so I fail to see how they can both be the same part.
Consequently, I am suspicious of this information. (These are both official Mazda publications.)
Obviously, I have "sport" brakes, and thus also the wrong rotors and support brackets. Judging by the photos, the support brackets appear to be included with the calipers, and obviously rotors are cheap.
Whaddya think?
Observe this product listing: https://www.gomiata.com/mazda-mx-5-m...-calipers.html
"These are brand NEW aftermarket brake calipers, for less money than OEM Mazda rebuilt calipers!"
It claims to fit '94-'01 cars (with '00-'01 being only the non-sport model.)
$90 each. I am MORE than willing to spend this level of money to make this problem go away.
The Mazda OEM Collision Parts guide says that non-sport '02-'04 models used the same caliper as '94-'01 cars. Though, oddly, it also states that what was considered to be the "right side" caliper in earlier years is used on both sides of the '01+ cars.
NA guide:
NB guide:
I just went down and inspected my car, and confirmed that the caliper is mounted on the front-side of the rotor on both right and left, and that the bleeder screw is at the top on both sides, so I fail to see how they can both be the same part.
Consequently, I am suspicious of this information. (These are both official Mazda publications.)
Obviously, I have "sport" brakes, and thus also the wrong rotors and support brackets. Judging by the photos, the support brackets appear to be included with the calipers, and obviously rotors are cheap.
Whaddya think?
#26
Boost Pope
Thread Starter
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,019
Total Cats: 6,587
Normally I'd agree with you. Which is why it took me this long to check their listings. They are the ONLY place I've found thus far offering a new, non-reman rear caliper which isn't a part of some expensive big-brake kit.
#30
They say they are Centric calipers... gotta be able to find them somewhere for cheaper if u can find the part #...
Also, you stated "If I drag the hand-brake lightly while going over bumps, the noise vanishes completely. As soon as I release the brake, it comes right back. This proves to me that the calipers are at fault, and not anything in the suspension / exhaust / etc."
--Have you tried taking off the 14mm bolt and adjusting the caliper tension? I know on the non-sport calipers this can be done, not 100% sure on the sports. I turn that adjuster in till the rotor stops moving, then back off maybe 3/4 of a turn and I don't seem to get any audible rattle, and I can can even "wobble" the caliper by hand when no brake/parking brake is applied.
Also, you stated "If I drag the hand-brake lightly while going over bumps, the noise vanishes completely. As soon as I release the brake, it comes right back. This proves to me that the calipers are at fault, and not anything in the suspension / exhaust / etc."
--Have you tried taking off the 14mm bolt and adjusting the caliper tension? I know on the non-sport calipers this can be done, not 100% sure on the sports. I turn that adjuster in till the rotor stops moving, then back off maybe 3/4 of a turn and I don't seem to get any audible rattle, and I can can even "wobble" the caliper by hand when no brake/parking brake is applied.
#32
Vteckiller2000 was telling me this weekend that his Sport rear calipers need to be adjusted for the ebrake engagement a bit more often than his old 1.8 stuff. I haven't had the same experiences, but i do have some rattles that i previously attributed to my coilover sliders, and my brakes are freshly adjusted.
#34
Wow, their pictures are even correct... surprising.
Left rear sport Caliper
Left rear non-sport Caliper
Left rear sport Caliper
Left rear non-sport Caliper
#35
Boost Pope
Thread Starter
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,019
Total Cats: 6,587
Found this vendor site: http://www.stylintrucks.com/parts/ce...ENBR7041.aspx#
Claims that they are remanufactured.
Also, you stated "If I drag the hand-brake lightly while going over bumps, the noise vanishes completely. As soon as I release the brake, it comes right back. This proves to me that the calipers are at fault, and not anything in the suspension / exhaust / etc."
--Have you tried taking off the 14mm bolt and adjusting the caliper tension? I know on the non-sport calipers this can be done, not 100% sure on the sports. I turn that adjuster in till the rotor stops moving, then back off maybe 3/4 of a turn and I don't seem to get any audible rattle, and I can can even "wobble" the caliper by hand when no brake/parking brake is applied.
--Have you tried taking off the 14mm bolt and adjusting the caliper tension? I know on the non-sport calipers this can be done, not 100% sure on the sports. I turn that adjuster in till the rotor stops moving, then back off maybe 3/4 of a turn and I don't seem to get any audible rattle, and I can can even "wobble" the caliper by hand when no brake/parking brake is applied.
Vteckiller2000 was telling me this weekend that his Sport rear calipers need to be adjusted for the ebrake engagement a bit more often than his old 1.8 stuff. I haven't had the same experiences, but i do have some rattles that i previously attributed to my coilover sliders, and my brakes are freshly adjusted.
#37
I was already going down this line.
Found this vendor site: Centric - Posi-Quiet Loaded Brake Calipers At StylinTrucks.com
Claims that they are remanufactured.
Found this vendor site: Centric - Posi-Quiet Loaded Brake Calipers At StylinTrucks.com
Claims that they are remanufactured.
#39
Boost Pope
Thread Starter
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,019
Total Cats: 6,587
They might by lying, I don't know. But truthfully, I'm extremely weary of reman rear NB sport calipers at this point, given all the different threads I've seen with people having this exact same problem. For $90 a side, loaded, I find it difficult to believe that they're drilling out the slider holes and re-bushing them.