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Well it happened, brakes

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Old 11-17-2009 | 02:33 PM
  #21  
hyperv6's Avatar
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Originally Posted by wagoneer
What's the website?

Dontletthefactsgetintheway.com
Old 11-17-2009 | 04:10 PM
  #22  
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The main problem with the rotors is they are for a lighter vehicle. Look at the vehicles that the stock rotors come on.
Old 11-17-2009 | 04:41 PM
  #23  
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Originally Posted by wagoneer
The main problem with the rotors is they are for a lighter vehicle. Look at the vehicles that the stock rotors come on.
Would you be so kind to elaborate and provide some examples?
Old 11-17-2009 | 05:19 PM
  #24  
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Originally Posted by wagoneer
The main problem with the rotors is they are for a lighter vehicle. Look at the vehicles that the stock rotors come on.
Fact is the brakes on my HHR SS are the same as what is on my 08 Malibu V6. It is at 3600 pounds and no brake issues. Same for the G6, Saturn Aura etc.

One point often missed by people with brake issues is how were the pads bedded in? Burnishing or bedding is needed anytime you put brakes on.

But often many worry about their engine when the car is new. They fail to remember the brakes also only had 4-5 miles on them when the car was picked up. Often they were never bedded in if the car as no miles on it.

When you dealer delivers the car they do not bed them in nor does the local mechanic. Many people get lucky and their normal drive takes care of it but often it does not.

Note if there was a flaw in the brake system everyone would have an issue but the fact is only some have this issue. The factor effecting it often are the initial miles driven that lead to problems later.

Note some brakes like EBC willinclued specific info on how to drive the brakes to bed them in properly. I would be shocked if many even here would know the proper way to do it.

While I did laugh at the Web joke, I post where to find this info to show the truth and try to help people find the real reason. To many people some even good mechanics don't know the truth.

Bendix addresses Brunishing and Rotor shake well on their web site along with other info as well as Willwood brakes.

On all these sites they address the material on the rotor and the thickness wear of a rotor with the cause. The only place warp is ever mentioned is in relation to improper torquing of the wheels.

Those who fail to head what the companies say to do will repeat brake problems time and time again.
Old 11-18-2009 | 06:09 AM
  #25  
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Originally Posted by hyperv6

Hmm who do I trust.?????
Hummm, I ask myself the same question, what I know or what anyone can pull from the internet. How about this one from a 2 second google search.

Heat - the enemy
It's this intense heat that causes rotors to warp. With conventional and even metallic brake pads, the brake pads and rotor rub against each other; the pads make the rotor hotter, while the rotor makes the pads hotter. This keeps going back and forth between the pads and the rotors until they get intensely hot. Then, when the wheel finally stops turning, you have a piping hot pad sitting in one place of the rotor. What happens then is the rest of the rotor cools off a lot quicker than the spot where the hot pads are sitting. This is where the warpage comes from. Another danger is brake fade; the pads and rotor can get so intensely hot in hard braking, their ability to generate friction is greatly reduced.
Excessive Heat
A vehicle's braking system generates a tremendous amount of friction-related heat, heat that normally gets radiated away from the brake pads and brake rotor mechanisms. However, in cases where excessive heat is generated within a braking system and not dispersed adequately, serious brake malfunctions can occur, which can include brake rotor warpage. A stuck brake caliper, old, worn-down brake pads, or a defective brake rotor can cause excessive heat to develop in or around a brake rotor, which can cause brake rotor damage and warpage
Incidentally, warped rotors are a bigger problem with the latest models compared to earlier ones fitted with disc brakes. That's because to decrease weight, and thus improve fuel economy, automakers have made brake rotors lighter and more susceptible to warping. Heavier brake rotors can absorb more heat so they are less likely to warp with sudden changes in temperature. While much more expensive vehicles do use carbon fiber and ceramic rotors, most still just use lighter weight, and more warp-prone, steel rotors.
Even Wiki....

[edit] Warping
Warping is often caused by excessive heat. When the disc's friction area is at a substantially higher temperature than the inner portion (hat) the thermal expansion of the friction area is greater than the inner portion and warping occurs. This can be minimized by using "floating" rotors which decouple the friction area from the inner portion and allow thermal expansion to occur at different rates. Primary causes of overheating include undersized or excessively machined brake discs, excessive braking (racing, descending hills/mountains), "riding" the brakes, or a "stuck" brake pad (pad contacts the disc at all times).
I can go on if you like. My lugs were torqued myself to 100 ft/lbs, I mounted my wheels, so I trust me. If you don't, then please move on. I've asked a question to an issue I know that I have. So far, you are only arguing about the problem I already know I have. I have looked at my pabs and rotors since this happened, I even rotated the tires to make sure if wasn't something else.



Originally Posted by Doc brown
You are correct, racing is not a fair comparison. Still, the physics are the same. Your original post says "I was running about 60-65 and had to stand on the brakes. Traffic prevented me from changing lanes. No lockup or anything, but needless to say they got heated up good. After, I noticed a little shimmy in the front on braking.". That to means that you are saying that the one jam on the brakes caused your issue.
Physics may be the same, but the quality of the material is not.

I guess I should have put hyperlinks to every brake issue I've ever commented, I guess that was my bad. But I have stated before since my move to the Atlanta area in Aug 2008, I've noticed my braking was a lot harder in many cases. This just did the final trick.

Again, arguing about an issue I already know I have.
Old 11-18-2009 | 07:28 AM
  #26  
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[QUOTE=solman98;425248]Hummm, I ask myself the same question, what I know or what anyone can pull from the internet. How about this one from a 2 second google search.

Who needs to Google and un named quotes or Wiki [like that is accurare info all the time]....when you have well know Companies like Bendix and EBC to go to directly. I would think the MFG that sells products who do not want these issues with their product would know the proper things to do to prevent any issues with said products.

But I assume you and your un named quotes know more than Bendix, EBC and most other MFG that gives recomendations on installation and use to prevent the problem you have?

Your argument is not with me but the people who design and make brakes. They know more on this than you or I.

Just because you can put on pads does not make you an expert.

We can argue this for ever but the bottom line is I have only posted accurate info from a reliable resource. If you don't like it call them.

Somtimes you just have to ask yourself Who here has repeated brake issues and who here had a good solid pedal on similar vehicles? Why are you having issues and mine are not. What are you missing?

Would you like to explain how you bed in your brakes? No looking at wiki or Google either!!! Or did you even bed them in properly? Many people don't even know what it is. Hmm many people also have brake rotor issue....?

Believe what you want but till you change or do something your missing you will have the same issue again and again..

Note EBC has a material on them that help bed in the brakes. If you follow their instructions it may solve your issue.

At this point I will let my recomend sources for info on this topic speak for themselves and hope they will help someone here. We both are not getting anywhere with this as it is.

I hope someday you figure out why you are having you brake issue.
Old 11-18-2009 | 08:02 AM
  #27  
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[QUOTE=hyperv6;425267]
Originally Posted by solman98
Hummm, I ask myself the same question, what I know or what anyone can pull from the internet. How about this one from a 2 second google search.

Who needs to Google and un named quotes or Wiki [like that is accurare info all the time]....when you have well know Companies like Bendix and EBC to go to directly. I would think the MFG that sells products who do not want these issues with their product would know the proper things to do to prevent any issues with said products.

But I assume you and your un named quotes know more than Bendix, EBC and most other MFG that gives recomendations on installation and use to prevent the problem you have?

Your argument is not with me but the people who design and make brakes. They know more on this than you or I.

Just because you can put on pads does not make you an expert.

We can argue this for ever but the bottom line is I have only posted accurate info from a reliable resource. If you don't like it call them.

Somtimes you just have to ask yourself Who here has repeated brake issues and who here had a good solid pedal on similar vehicles? Why are you having issues and mine are not. What are you missing?

Would you like to explain how you bed in your brakes? No looking at wiki or Google either!!! Or did you even bed them in properly? Many people don't even know what it is. Hmm many people also have brake rotor issue....?

Believe what you want but till you change or do something your missing you will have the same issue again and again..

Note EBC has a material on them that help bed in the brakes. If you follow their instructions it may solve your issue.

At this point I will let my recomend sources for info on this topic speak for themselves and hope they will help someone here. We both are not getting anywhere with this as it is.

I hope someday you figure out why you are having you brake issue.
I have reasons for getting my research from "other" that places like Bendix and such. Why, well they are there to sell you a product. I'd rather get unbiased information. Forums such as these are "usually" a good place to get unbiased information. No, I'm not an expert, but I don know how to season a set of rotors and break in pads. After all, I'm at over 42K miles on this one, so it's a not new. I've only had to replace three sets of rotors in the over 1,000,000 miles I've driven, all for being out of tolerance, so I think I do have a clue on what I'm doing.

I asked for information on replacement parts for those that have had to replace similiar parts on an HHR. Since I do know what the issue is. I'd rather replace than turn at this mileage.
Old 11-18-2009 | 08:57 AM
  #28  
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Originally Posted by solman98

Even Wiki....


Physics may be the same, but the quality of the material is not.

I guess I should have put hyperlinks to every brake issue I've ever commented, I guess that was my bad. But I have stated before since my move to the Atlanta area in Aug 2008, I've noticed my braking was a lot harder in many cases. This just did the final trick.
Wiki? You can't be serious.

No need for hyperlinks, its just that you made some statements that were a bit confusing and conflicting. You have since cleared that up.

And I don't think anyone ever said you should cut them instead of replacing them. I've said all along that its the use of cheap materials and its better just to put good quality replacements on. You, me, and HyperV6 all have a lot of years experience and a lot of knowledge. We only differ in our assessment of what is actually causing the pulsating, and that's what most of this has been about.
Old 11-18-2009 | 09:02 AM
  #29  
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Originally Posted by Doc brown
Wiki? You can't be serious.
Just what came up on that 2 second search.

If we trusted what we found on vendors web sites, we would all be running turbonators and using splitfires.
Old 11-18-2009 | 09:37 AM
  #30  
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Originally Posted by solman98
Just what came up on that 2 second search.

If we trusted what we found on vendors web sites, we would all be running turbonators and using splitfires.
Yep!....Bendix is a real snake oil company. With the way they do business they may only be around another 100 years.


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