Changed my brakes and rotors today...EEEWWWW!!!
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From: Silver Spring, Maryland
Re: Changed my brakes and rotors today...EEEWWWW!!!
Originally Posted by Rogue
Put some RSM Slotted rotors and some Raybestos quietstops on my car today. The old pads fell apart in my hands!! The rotors look ok on the front but the backs are worn pretty thin. Probably the trash for them although ill take em to see if they can be turned just to have an extra set lying around.
Out with the old and busted...In with the new hotness...
Out with the old and busted...In with the new hotness...
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Be careful. Crossdrilled rotors could mean big problems down the road for you. Unless you're running a track or rally car, or the holes are CAST, not drilled, you could get micro cracking. Crossdrilled rotors are typically (professionally) replaced after every race/run.
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Originally Posted by willwren
Be careful. Crossdrilled rotors could mean big problems down the road for you. Unless you're running a track or rally car, or the holes are CAST, not drilled, you could get micro cracking. Crossdrilled rotors are typically (professionally) replaced after every race/run.
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From: Silver Spring, Maryland
Originally Posted by RamAir V
Originally Posted by willwren
Be careful. Crossdrilled rotors could mean big problems down the road for you. Unless you're running a track or rally car, or the holes are CAST, not drilled, you could get micro cracking. Crossdrilled rotors are typically (professionally) replaced after every race/run.
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And those applications you just mentioned change their rotors more often than you change your underwear.
The front rotors on the 92-99 H bodies, (Bonnevilles in particular) are a very delicate matter. The rotors are under matched for the weight of the vehicle, and are prone to warping. The extreme heat variances caused by this combination case micro-cracking in crossDRILLED rotors. They are of no benefit performance-wise for street applications. These are a purely cosmetic modification. This is why many shops are now refusing to turn crossdrilled rotors. The 'import tuner' crowd are all going with these rotors for cosmetic reasons, and the rotors are failing. When they fail, they blame the shop that turned them. There are several local shops in my area that refuse to turn these rotors for exactly that reason. They are poorly suited for street use.
Slotted rotors are of benefit for several reasons, icluding allowing the pads to outgas, and shedding water. Because the slots don't extend from face to face, and the fact that the machined slot isn't at perpendicular angles to the rotor face, it doesn't have the stress crack problems that crossdrilled rotors have.
I'm very familiar with the rotors you have on your car. The are machined holes, and therefore are a problem. If you want the cute little holes in your rotors for looks, make sure they're cast into the rotor blanks before final machining, or you will have problems with them, at least alot earlier than someone with slotted or stock rotors on their Bonneville.
The front rotors on the 92-99 H bodies, (Bonnevilles in particular) are a very delicate matter. The rotors are under matched for the weight of the vehicle, and are prone to warping. The extreme heat variances caused by this combination case micro-cracking in crossDRILLED rotors. They are of no benefit performance-wise for street applications. These are a purely cosmetic modification. This is why many shops are now refusing to turn crossdrilled rotors. The 'import tuner' crowd are all going with these rotors for cosmetic reasons, and the rotors are failing. When they fail, they blame the shop that turned them. There are several local shops in my area that refuse to turn these rotors for exactly that reason. They are poorly suited for street use.
Slotted rotors are of benefit for several reasons, icluding allowing the pads to outgas, and shedding water. Because the slots don't extend from face to face, and the fact that the machined slot isn't at perpendicular angles to the rotor face, it doesn't have the stress crack problems that crossdrilled rotors have.
I'm very familiar with the rotors you have on your car. The are machined holes, and therefore are a problem. If you want the cute little holes in your rotors for looks, make sure they're cast into the rotor blanks before final machining, or you will have problems with them, at least alot earlier than someone with slotted or stock rotors on their Bonneville.
