Getting ready to do some work on her...
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Mountain Pass
Joined: May 2010
Posts: 164
Likes: 1
From: Frederick, MD.
Getting ready to do some work on her...
Getting ready to replace the front disc rotors on the front of my 00 Exc. Do I have to do anything to the new rotors prior to installing them? Do I need to get them turned or anything?
Any words of wisdom before I get into this?
Any words of wisdom before I get into this?
Fleet Mechanic
Joined: Sep 2002
Posts: 1,388
Likes: 2
From: Greensboro, NC
Good quality rotors are ready to be used out of the box. Make sure you clean them with brake clean to remove any oils or debris. If 4x4 then nothing else but installation. If 4x2 then you'll need to clean the inside as well to get ready for the bearings. Make sure you bed your pads in with the new rotors and clean then calipers and slides and lube everything.
Thread Starter
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Mountain Pass
Joined: May 2010
Posts: 164
Likes: 1
From: Frederick, MD.
Good quality rotors are ready to be used out of the box. Make sure you clean them with brake clean to remove any oils or debris. If 4x4 then nothing else but installation. If 4x2 then you'll need to clean the inside as well to get ready for the bearings. Make sure you bed your pads in with the new rotors and clean then calipers and slides and lube everything.
Freshman User
Joined: May 2012
Posts: 36
Likes: 0
JMM, Here is a post from Stewart about bedding brakes.
StopTech:
Brake Pad Bed-In
The all-important transfer layer
As stated above, the objective of the bed-in process is to deposit an even layer of brake pad material, or transfer layer , on the rubbing surface of the rotor disc. Note the emphasis on the word even, as uneven pad deposits on the rotor face are the number one, and almost exclusive cause of brake judder or vibration.
Let's say that again, just so there is no misunderstanding. Uneven pad deposits on the rotor face are the number one, and almost exclusive cause of brake judder or vibration.
It only takes a small amount of thickness variation, or TV, in the transfer layer (we're only talking a few ten thousandths of an inch here) to initiate brake vibration. While the impact of an uneven transfer layer is almost imperceptible at first, as the pad starts riding the high and low spots, more and more TV will be naturally generated until the vibration is much more evident. With prolonged exposure, the high spots can become hot spots and can actually change the metallurgy of the rotor in those areas, creating “hard” spots in the rotor face that are virtually impossible to remove.
Why You Should Bed in your Brake Pads & Rotors - YouTube
EBC:
EBC Brakes | Troubleshooting Information | Bedding in new brakes | Brake Noise / Squeal | Brake Vibration
1. How to bed in your new brakes
Drive your vehicle steadily within the first 300-400 miles of road use only using the brakes violently in case of emergency. During this time use the brakes lightly and intermittently to achieve a matching between the pad and rotor which we call break in or bed in.
The speed with which perfect brake in will have occurred depends on how often the brakes are used. If you drive on a freeway or motorway and do not use your brakes for miles at a time, break in periods will be much longer. Using the brakes with caution during their early life will extend their wear life and greatly reduce the chances of rotor vibration or “shimmying” as it is known in the States. During the bed in time the pads will only contact the disc on a limited area until tiny irregularities in machining or misalignment of the pads against the rotor have been removed. You can easily see how far you have progressed with bedding in your new brakes by looking through the wheel spokes and evaluating pad contact. The rotor should look shiny and smooth across its surfaces from outside to inside in all areas of the rotor. If you have purchased EBC gold zinc or black zinc coated sport slotted rotors, all of these coatings should have been visibly removed across the entire braking area of the rotor. Break in times on European vehicles is usually considerably longer than on Asian or US built vehicles because of the design of the brake system. European vehicles use a “taller” brake pad and may tend to contact on the outer edges of the rotor first and gradually contact more towards the centre of the axle over the first few hundred miles. After you are confident that the pads and discs are perfectly mated, use the brakes on a quiet and safe road 5-6 times at medium pressure bringing the car from 60mph to 10mph. Drive the vehicle for a few miles to allow the brakes to cool and repeat this procedure. During this final break in a brake odour will almost certainly appear and this is perfectly normal. This is known as green fade where the surface resins within the pad finally cure and burn off.
This bed in procedure is for STREET driving only. For race use bed in please see notes inside the package.
Noise Shims For Brake Pads - Bed In | EBC Brakes
New disc pads take some time to bed down, even if you are using new or turned rotors and during this time when the pad is bedding in to match exactly the geometry of the rotor the pads can make noise.
The normal way to minimise this is to add noise reduction shims onto the reverse side of the pads which dampens the vibration caused by the pad which will "Chatter" slightly when not seated perfectly.
This noise would go away after 300-500 miles but to avoid irritation noise shims are used to reduce this sound.
There is no safety issue when a pad makes these noises during bed in, it is merely a cosmetic problem of the new brakes.
At this point we also want to remind you that new brake pads do take some miles to bed down and that bed in times on worn or old rotors can be a lot longer and that DURING THIS BED IN PERIOD BRAKES WILL BE LESS EFFICIENT especially if rotor condition is poor. If you are not sure what is acceptable and not, please ask a professional mechanic as driving a car with poor brakes is just not a good idea at all.
Hawk:
Brake Pad Bed-In | Brake Pad Break-In | Hawk Brake Pad Bed-In
Brake Pad Bed-In is the process of creating a consistant and smooth contact patch between the brake pad and rotor. Many new brake pads leave what is called a transfer layer on the rotor so that instead of having rotor to pad contact the brake pad leaves a thin film of pad material that increases brake bite when you need to slow down. Leaving a good transfer layer during brake pad break-in is very important because it will give you superior brake pedal feel, less pad and rotor wear, and in many cases less brake noise.
During proper Brake Pad Break-In your brake rotors are also introduced to higher temperatures because the brake bed-in procedure progressivly increases brake temperatures instead of going from cold to hot to quickly. This procedure helps prepare the rotors for aggressive use. Quick changes in brake rotor temperature is one of the biggest causes of cracked rotors, and proper brake pad and rotor break-in along with proper driving techniques can avoid this costly mishap.
Hawk Performance Street Pad Bed-in Instructions - YouTube
They all state the same thing.
Stewart
Brake Pad Bed-In
The all-important transfer layer
As stated above, the objective of the bed-in process is to deposit an even layer of brake pad material, or transfer layer , on the rubbing surface of the rotor disc. Note the emphasis on the word even, as uneven pad deposits on the rotor face are the number one, and almost exclusive cause of brake judder or vibration.
Let's say that again, just so there is no misunderstanding. Uneven pad deposits on the rotor face are the number one, and almost exclusive cause of brake judder or vibration.
It only takes a small amount of thickness variation, or TV, in the transfer layer (we're only talking a few ten thousandths of an inch here) to initiate brake vibration. While the impact of an uneven transfer layer is almost imperceptible at first, as the pad starts riding the high and low spots, more and more TV will be naturally generated until the vibration is much more evident. With prolonged exposure, the high spots can become hot spots and can actually change the metallurgy of the rotor in those areas, creating “hard” spots in the rotor face that are virtually impossible to remove.
Why You Should Bed in your Brake Pads & Rotors - YouTube
EBC:
EBC Brakes | Troubleshooting Information | Bedding in new brakes | Brake Noise / Squeal | Brake Vibration
1. How to bed in your new brakes
Drive your vehicle steadily within the first 300-400 miles of road use only using the brakes violently in case of emergency. During this time use the brakes lightly and intermittently to achieve a matching between the pad and rotor which we call break in or bed in.
The speed with which perfect brake in will have occurred depends on how often the brakes are used. If you drive on a freeway or motorway and do not use your brakes for miles at a time, break in periods will be much longer. Using the brakes with caution during their early life will extend their wear life and greatly reduce the chances of rotor vibration or “shimmying” as it is known in the States. During the bed in time the pads will only contact the disc on a limited area until tiny irregularities in machining or misalignment of the pads against the rotor have been removed. You can easily see how far you have progressed with bedding in your new brakes by looking through the wheel spokes and evaluating pad contact. The rotor should look shiny and smooth across its surfaces from outside to inside in all areas of the rotor. If you have purchased EBC gold zinc or black zinc coated sport slotted rotors, all of these coatings should have been visibly removed across the entire braking area of the rotor. Break in times on European vehicles is usually considerably longer than on Asian or US built vehicles because of the design of the brake system. European vehicles use a “taller” brake pad and may tend to contact on the outer edges of the rotor first and gradually contact more towards the centre of the axle over the first few hundred miles. After you are confident that the pads and discs are perfectly mated, use the brakes on a quiet and safe road 5-6 times at medium pressure bringing the car from 60mph to 10mph. Drive the vehicle for a few miles to allow the brakes to cool and repeat this procedure. During this final break in a brake odour will almost certainly appear and this is perfectly normal. This is known as green fade where the surface resins within the pad finally cure and burn off.
This bed in procedure is for STREET driving only. For race use bed in please see notes inside the package.
Noise Shims For Brake Pads - Bed In | EBC Brakes
New disc pads take some time to bed down, even if you are using new or turned rotors and during this time when the pad is bedding in to match exactly the geometry of the rotor the pads can make noise.
The normal way to minimise this is to add noise reduction shims onto the reverse side of the pads which dampens the vibration caused by the pad which will "Chatter" slightly when not seated perfectly.
This noise would go away after 300-500 miles but to avoid irritation noise shims are used to reduce this sound.
There is no safety issue when a pad makes these noises during bed in, it is merely a cosmetic problem of the new brakes.
At this point we also want to remind you that new brake pads do take some miles to bed down and that bed in times on worn or old rotors can be a lot longer and that DURING THIS BED IN PERIOD BRAKES WILL BE LESS EFFICIENT especially if rotor condition is poor. If you are not sure what is acceptable and not, please ask a professional mechanic as driving a car with poor brakes is just not a good idea at all.
Hawk:
Brake Pad Bed-In | Brake Pad Break-In | Hawk Brake Pad Bed-In
Brake Pad Bed-In is the process of creating a consistant and smooth contact patch between the brake pad and rotor. Many new brake pads leave what is called a transfer layer on the rotor so that instead of having rotor to pad contact the brake pad leaves a thin film of pad material that increases brake bite when you need to slow down. Leaving a good transfer layer during brake pad break-in is very important because it will give you superior brake pedal feel, less pad and rotor wear, and in many cases less brake noise.
During proper Brake Pad Break-In your brake rotors are also introduced to higher temperatures because the brake bed-in procedure progressivly increases brake temperatures instead of going from cold to hot to quickly. This procedure helps prepare the rotors for aggressive use. Quick changes in brake rotor temperature is one of the biggest causes of cracked rotors, and proper brake pad and rotor break-in along with proper driving techniques can avoid this costly mishap.
Hawk Performance Street Pad Bed-in Instructions - YouTube
They all state the same thing.
Stewart
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