Brembo OEM Cross-Drilled & Slotted Rotors
- Thread starter Bijou-MP5
- Start date
WhiteZoomZoom
Member
I heard someone said those are not Brembos even those the sellers state is Brembos....
looks nice thought. Ebay ?
looks nice thought. Ebay ?
WhiteZoomZoom said:
I'm not really sure about that but I know it's from ebay.
the guy who bought this actually picked it up from seller. more details ask protege5lava.
here's the link to it.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33564&item=2402373615&rd=1
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I used Brembo OEM blanks on my car for lapping days and Solo. They worked well and they're cheaper than factory stuff.
Many of Brembo's rotors aren't manufactured by Brembo, but they are, in fact "Brembo's". This is a very common practice in the automotive market (and probably any other market you could name). It doesn't mean they're "fake".
You guys realize that x-drilled rotors don't do anything to improve our cars braking, right? They do look good though, so I guess they're good for something (other than performance).
Many of Brembo's rotors aren't manufactured by Brembo, but they are, in fact "Brembo's". This is a very common practice in the automotive market (and probably any other market you could name). It doesn't mean they're "fake".
You guys realize that x-drilled rotors don't do anything to improve our cars braking, right? They do look good though, so I guess they're good for something (other than performance).
flat_black
Member
If you want, as a little project if you have the money and time to spare, take a surface pyrometer to the stock rotors after a nice warm-in period. Then install the forementioned cross-drilled rotors, and enjoy the same session of twistys, and hard braking (But wait 'till after the rotors/pads have been bedded for a few hundred miles), then record the pyrometer results again. You should see anywhere between 50 - 150 degrees of difference, in my experience. That's what happened when I installed them on my SVX, and a nearby friend installed them on his Celica Supra. As the rotors are made to dissipate the heat created by braking, this makes them more effective in the long run. Will you notice it in everyday driving? I highly doubt it. =) Unless you're just plain nuts. Hehee. On the track, in an autocross environment, such as Solo I/II or whatnot, it'd make quite a difference. But even then, I've often found the stock rotors to be more than ample. Just my two cents. =)
Eddie
Eddie
Brake tech
Give this a read. It clears up lots of misinformation and points out the areas we need to address before trying to improve out cars braking.
Lets look at some common rotor modification and performance upgrades that you may have been exposed to and try to separate the marketing from the engineering
Crossdrilling your rotors might look neat, but what is it really doing for you? Well, unless your car is using brake pads from the 40s and 50s, not a whole lot. Rotors were first drilled because early brake pad materials gave off gasses when heated to racing temperatures a process known as gassing out. These gasses then formed a thin layer between the brake pad face and the rotor, acting as a lubricant and effectively lowering the coefficient of friction. The holes were implemented to give the gasses somewhere to go. It was an effective solution, but todays friction materials do not exhibit the same gassing out phenomenon as the early pads.
For this reason, the holes have carried over more as a design feature than a performance feature. Contrary to popular belief they dont lower temperatures (in fact, by removing weight from the rotor, the temperatures can actually increase a little), they create stress risers allowing the rotor to crack sooner, and make a mess of brake pads sort of like a cheese grater rubbing against them at every stop. (Want more evidence? Look at NASCAR or F1. You would think that if drilling holes in the rotor was the hot ticket, these teams would be doing it.)
The one glaring exception here is in the rare situation where the rotors are so oversized (look at any performance motorcycle or lighter formula car) that the rotors are drilled like Swiss cheese. While the issues of stress risers and brake pad wear are still present, drilling is used to reduce the mass of the parts in spite of these concerns. Remember nothing comes for free. If these teams switched to non-drilled rotors, they would see lower operating temperatures and longer brake pad life at the expense of higher weight. Its all about trade-offs.
Slotting
Slotting rotors, on the other hand, might be a consideration if your sanctioning body allows for it. Cutting thin slots across the face of the rotor can actually help to clean the face of the brake pads over time, helping to reduce the glazing often found during high-speed use which can lower the coefficient of friction. While there may still be a small concern over creating stress risers in the face of the rotor, if the slots are shallow and cut properly, the trade-off appears to be worth the risk.
From link
There's some more great tech here...Brakes don't stop your car!!??
Check out the rest of the site. Lots of very good and accurate tech.
Give this a read. It clears up lots of misinformation and points out the areas we need to address before trying to improve out cars braking.
Lets look at some common rotor modification and performance upgrades that you may have been exposed to and try to separate the marketing from the engineering
Crossdrilling your rotors might look neat, but what is it really doing for you? Well, unless your car is using brake pads from the 40s and 50s, not a whole lot. Rotors were first drilled because early brake pad materials gave off gasses when heated to racing temperatures a process known as gassing out. These gasses then formed a thin layer between the brake pad face and the rotor, acting as a lubricant and effectively lowering the coefficient of friction. The holes were implemented to give the gasses somewhere to go. It was an effective solution, but todays friction materials do not exhibit the same gassing out phenomenon as the early pads.
For this reason, the holes have carried over more as a design feature than a performance feature. Contrary to popular belief they dont lower temperatures (in fact, by removing weight from the rotor, the temperatures can actually increase a little), they create stress risers allowing the rotor to crack sooner, and make a mess of brake pads sort of like a cheese grater rubbing against them at every stop. (Want more evidence? Look at NASCAR or F1. You would think that if drilling holes in the rotor was the hot ticket, these teams would be doing it.)
The one glaring exception here is in the rare situation where the rotors are so oversized (look at any performance motorcycle or lighter formula car) that the rotors are drilled like Swiss cheese. While the issues of stress risers and brake pad wear are still present, drilling is used to reduce the mass of the parts in spite of these concerns. Remember nothing comes for free. If these teams switched to non-drilled rotors, they would see lower operating temperatures and longer brake pad life at the expense of higher weight. Its all about trade-offs.
Slotting
Slotting rotors, on the other hand, might be a consideration if your sanctioning body allows for it. Cutting thin slots across the face of the rotor can actually help to clean the face of the brake pads over time, helping to reduce the glazing often found during high-speed use which can lower the coefficient of friction. While there may still be a small concern over creating stress risers in the face of the rotor, if the slots are shallow and cut properly, the trade-off appears to be worth the risk.
From link
There's some more great tech here...Brakes don't stop your car!!??
Check out the rest of the site. Lots of very good and accurate tech.
Holy Crap! I forget to mention that the Brembo rotors failed twice on my friends car! (hand)
They failed on him twice at Mosport. The rotors cracked clean in half! He was ok, but he's lucky.
The rotors were bedded correctly and we're not sure why they failed. I wasn't participating in Solo when this happened so he might have bought a bad batch of rotors. I'm not sure. I didn't have any problems with them, but I just thought the failures were significant enought to mention.
They failed on him twice at Mosport. The rotors cracked clean in half! He was ok, but he's lucky.
The rotors were bedded correctly and we're not sure why they failed. I wasn't participating in Solo when this happened so he might have bought a bad batch of rotors. I'm not sure. I didn't have any problems with them, but I just thought the failures were significant enought to mention.
