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Rear brake noise from drilled rotors #2177205
10/17/16 08:35 PM
10/17/16 08:35 PM
Joined: Dec 2004
Posts: 10,550
Rittman Ohio
fourgearsavoy Offline OP
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fourgearsavoy  Offline OP
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Joined: Dec 2004
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Rittman Ohio
I have Wilwood Dynalite brakes on the rear of my Savoy and they have drilled rotors(not my choice I just got a smoking deal on them)that make noise whenever step on the brakes.
I was just wondering if this is a normal sound that will go away after a while or are they just like that. I'm probably just going to get a new set of solid rotors and see if the noise goes away.
Anybody need a set of drilled rotors shruggy

Thanks

Gus beer


64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
Re: Rear brake noise from drilled rotors [Re: fourgearsavoy] #2177208
10/17/16 08:36 PM
10/17/16 08:36 PM
Joined: May 2003
Posts: 96,649
On The Boat, On The Lake, Wa. ...
amxautox Offline
Still Retired. Still Posting on Moparts. A Lot.
amxautox  Offline
Still Retired. Still Posting on Moparts. A Lot.

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On The Boat, On The Lake, Wa. ...
What KIND of noise? devil


Tom

"Everyone should believe in something; I believe I'll go fishing."

-Henry David Thoreau

Men and fish are alike. They both get into trouble when they open their mouths

author unknown

Re: Rear brake noise from drilled rotors [Re: amxautox] #2177395
10/18/16 12:22 AM
10/18/16 12:22 AM
Joined: Dec 2004
Posts: 10,550
Rittman Ohio
fourgearsavoy Offline OP
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fourgearsavoy  Offline OP
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Rittman Ohio
Almost kind of a whirring wooshing noise when I apply the brakes hard or easy. I can tell by the noise the pads are just starting to make contact with the rotors. My exhaust is very loud and I can still hear it over the stroker with 3" 2 chamber 40 series Flow Master mufflers. Wife and I went for a 40 mile cruise last Saturday and she asked me what that zzrrr zrrrr zzzrrr noise was and thats how she described it laugh2 She said she could almost hear the holes in the rotors going past the pads.

Gus beer


64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
Re: Rear brake noise from drilled rotors [Re: fourgearsavoy] #2177399
10/18/16 12:27 AM
10/18/16 12:27 AM
Joined: Jan 2003
Posts: 8,016
Polson, MT
DoctorDiff Offline
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DoctorDiff  Offline
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Posts: 8,016
Polson, MT
That happens when solid rotor are drilled. Solid rotors should be slotted, only.

Re: Rear brake noise from drilled rotors [Re: fourgearsavoy] #2177416
10/18/16 12:48 AM
10/18/16 12:48 AM
Joined: May 2003
Posts: 96,649
On The Boat, On The Lake, Wa. ...
amxautox Offline
Still Retired. Still Posting on Moparts. A Lot.
amxautox  Offline
Still Retired. Still Posting on Moparts. A Lot.

Joined: May 2003
Posts: 96,649
On The Boat, On The Lake, Wa. ...
Solid rotors have no place for the air in the holes to go. So the air is trying to push the pads away from the rotor. Thus the noise. Vented rotors let the air go thru the holes, and thru the middle of the rotor, then out the outside diameter. No pushing out of the pads.


Tom

"Everyone should believe in something; I believe I'll go fishing."

-Henry David Thoreau

Men and fish are alike. They both get into trouble when they open their mouths

author unknown

Re: Rear brake noise from drilled rotors [Re: DoctorDiff] #2177419
10/18/16 12:51 AM
10/18/16 12:51 AM
Joined: Dec 2004
Posts: 10,550
Rittman Ohio
fourgearsavoy Offline OP
I Live Here
fourgearsavoy  Offline OP
I Live Here

Joined: Dec 2004
Posts: 10,550
Rittman Ohio
Yeah It sure is annoying at every stop so I'm stopping at Summit and picking up a set of solid rotors and bolting them on and re-safety wiring them AGAIN mad
All in all though going from 4 wheel 10.5 drums to 4 wheel discs is amazing effortless stopping.
Gus beer


64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
Re: Rear brake noise from drilled rotors [Re: fourgearsavoy] #2199817
11/21/16 05:26 AM
11/21/16 05:26 AM
Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar Offline
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451Mopar  Offline
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Aurora, Colorado
Did you try swapping the rotors side-to-side to see if changing the drilled pattern / rotation helps with the noise?

Re: Rear brake noise from drilled rotors [Re: 451Mopar] #2200353
11/22/16 01:21 AM
11/22/16 01:21 AM
Joined: Nov 2004
Posts: 25,050
Texas
GoodysGotaCuda Offline
5.7L Hemi, 6spd
GoodysGotaCuda  Offline
5.7L Hemi, 6spd

Joined: Nov 2004
Posts: 25,050
Texas
Originally Posted By 451Mopar
Did you try swapping the rotors side-to-side to see if changing the drilled pattern / rotation helps with the noise?



I suspect they are marked with the intended direction. work


1972 Barracuda - 5.7L Hemi, T56 Magnum 6spd - https://www.facebook.com/GoodysGotaHemi
2020 RAM 1500
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Re: Rear brake noise from drilled rotors [Re: fourgearsavoy] #2201356
11/23/16 06:39 PM
11/23/16 06:39 PM
Joined: Nov 2003
Posts: 3,577
Long Island, NY USA
B
BergmanAutoCraft Offline
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BergmanAutoCraft  Offline
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B

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Posts: 3,577
Long Island, NY USA
It's common for drilled rotors to make a moaning kind of sound.







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