Cross-drilled rotors making noise
02-18-2002, 04:04 PM
#1
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Cross-drilled rotors making noise
I've got PowerStop cross-drilled rotors and EBC greenstuff brakepads, and they are pretty loud, mostly at very low speeds, they make a screaching noise. EBC guarantees their pads will be quiet, so I'm guessing it's the rotors, or the combo of the two. Anyone have this problem, anyone have this same set-up? Anyone have a solution?
02-18-2002, 04:42 PM
#2
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Join Date: Feb 2002
Posts: 21
Re: Cross-drilled rotors making noise
Originally posted by CTW5781
I've got PowerStop cross-drilled rotors and EBC greenstuff brakepads, and they are pretty loud, mostly at very low speeds, they make a screaching noise. EBC guarantees their pads will be quiet, so I'm guessing it's the rotors, or the combo of the two. Anyone have this problem, anyone have this same set-up? Anyone have a solution?
I've got PowerStop cross-drilled rotors and EBC greenstuff brakepads, and they are pretty loud, mostly at very low speeds, they make a screaching noise. EBC guarantees their pads will be quiet, so I'm guessing it's the rotors, or the combo of the two. Anyone have this problem, anyone have this same set-up? Anyone have a solution?
02-18-2002, 06:34 PM
#4
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Join Date: Feb 2002
Posts: 21
Originally posted by CTW5781
Yeah I know about wear indicators on pads, it's not that, the pads are brand new, got put on the same time as the rotors.
Yeah I know about wear indicators on pads, it's not that, the pads are brand new, got put on the same time as the rotors.
You should take it back to whoever installed it for them to look at it. If you installed them youself, you could probably try some of spray that gets rid of squeaking.
02-18-2002, 08:09 PM
#5
they squeak like a school bus (metal on metal) type, or what?
I'd say the brake pads are probably glazed from slamming on the brakes when they're cold.
remove the pads from the car, and hit them with some 40-100 grit sandpaper. roughen up the surface and reinstall.
see if that fixes the problem.
also make sure you've got the copper shims on them that were on your OEM pads. those are made to reduce brake noise like what you may be hearing.
If all else fails, buy a can of the spray on brake-quiet gunk you can get at parts stores. it didn't help mine any, but other people said it did.
worth a shot for $3.
I'd say the brake pads are probably glazed from slamming on the brakes when they're cold.
remove the pads from the car, and hit them with some 40-100 grit sandpaper. roughen up the surface and reinstall.
see if that fixes the problem.
also make sure you've got the copper shims on them that were on your OEM pads. those are made to reduce brake noise like what you may be hearing.
If all else fails, buy a can of the spray on brake-quiet gunk you can get at parts stores. it didn't help mine any, but other people said it did.
worth a shot for $3.
02-19-2002, 06:24 AM
#6
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Join Date: Feb 2002
Posts: 37
I had the Nissan dealership install them for me, I don't have the tools or time to do it myself...
After they were installed I sort-of broke them in, 2 slow stops, two medium stops, 2 hard stops, I probably should've done more of that.
Here's the kicker though, they don't make the noise all the time, on my way to work this morning I only heard a very faint squeak once.
After they were installed I sort-of broke them in, 2 slow stops, two medium stops, 2 hard stops, I probably should've done more of that.
Here's the kicker though, they don't make the noise all the time, on my way to work this morning I only heard a very faint squeak once.
02-19-2002, 06:45 AM
#7
that's the correct way to break in pads, but not rotors. and the rotors are the most important part ($200 compared to $50 for one!)
when breaking in the rotors you're simply supposed to drive easily on them for 4-500 miles, then slowly start heating them up by using progressively harder braking.
usually what I'll do is take it out on the open highway and get the car up to 120 or 130, then lightly hold the pedal until I drop 20mph or so, then coast for about 30sec and speed back up, then do it again. do that several times, then slow down to about 90 and do harder stops from 90 to 50. do about 5 of those... by then, most brakes will probably be pretty damn hot, and you need to cruise for 15-20 miles to let the system cool down.
but do this only after letting the rotors break in for 500 miles or so. otherwise you risk warping and ruining the rotors from day one.
the squeaking there's not much you can do about besides pull the pads off and sand the glaze off.
the EBC reds also squealed pretty bad on my car, but I've never used the greens.
when breaking in the rotors you're simply supposed to drive easily on them for 4-500 miles, then slowly start heating them up by using progressively harder braking.
usually what I'll do is take it out on the open highway and get the car up to 120 or 130, then lightly hold the pedal until I drop 20mph or so, then coast for about 30sec and speed back up, then do it again. do that several times, then slow down to about 90 and do harder stops from 90 to 50. do about 5 of those... by then, most brakes will probably be pretty damn hot, and you need to cruise for 15-20 miles to let the system cool down.
but do this only after letting the rotors break in for 500 miles or so. otherwise you risk warping and ruining the rotors from day one.
the squeaking there's not much you can do about besides pull the pads off and sand the glaze off.
the EBC reds also squealed pretty bad on my car, but I've never used the greens.
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